Permanent magnet rotor design. First, the design rule of the motor size is introduced.

Nov 1, 2016 · Design of PM-assisted synchronous reluctance motor (PMaSynRM) is usually used to enhance the performance of synchronous reluctance motor (SynRM). Torque characteristics, such as average torque and torque ripple, are rather important and should be carefully concerned during the optimal design of the SPPMSM. Mar 5, 2019 · The use of new generation motors with a fixed magnet structure has increased with the advent of magnet technology. In order to have products as The investigation has shown, that PM surface design can improve PMSM properties. When the air gap length is fixed, the larger the outer diameter of the PM is, the higher the motor power will be. Jan 1, 2021 · In this paper, the axial flux type of permanent magnet machine configuration is selected to propose the optimum design of ceiling fan machine. As permanent-magnet (PM) materials are generally fragile, a high-strength sleeve is required to protect the PMs from damage due to the extreme centrifugal forces. Moreover, the low-speed requirement for direct driving and the high-speed requirement for compact motor design can be achieved simultaneously. Download: Download high-res image (1MB) Dec 2, 2022 · This work presents the opportunity to address potential shortages in critical rare earth elements by substituting neodymium-iron-boron (Nd-Fe-B) magnets with ferrite magnets in traction motors, while maintaining comparable performance. Stress in the permanent magnet for initial case. A multi-barrier rotor structure is proposed and analysed through finite element method simulations to optimize key design parameters. A permanent magnet motor is a type of electric motor that uses permanent magnets for the field excitation and a wound armature. Recently, given the price fluctuations and unstable supply of rare earth permanent magnets, alternative configurations with reduced use of permanent magnets are being sought. Jul 18, 2016 · This paper proposes a novel solid rotor topology for an interior permanent magnet (IPM) machine, adopted in this case for an aircraft starter-generator design. Aug 11, 2022 · The objective of this paper is to investigate the optimal design of a 120 W outer-rotor permanent magnet synchronous machine for air-conditioning applications to reduce the electricity consumption and machine costs. Oct 6, 2023 · The rotor of the HSPMSM adopts a solid cylindrical permanent magnet rotor with the parallel magnetization of two poles. Nov 1, 2017 · DOI: 10. Jun 27, 2016 · This paper addresses the considerations and challenges of the rotor design of high-speed surface permanent magnet machines with special attention given to the rotor sleeve design including thickness and material. INTRODUCTION n this research, a goal was to explore the optimization of the electrical subsystem of a Man-Portable Power System (MPPS). Jun 19, 2021 · The permanent magnet synchronous motor working is dependent on how the rotor’s static magnetic field and the stator’s revolving magnetic field interact. The Maxwell stress tensor (MST) method is adopted to identify and quantify the torque Jun 22, 2021 · Today’s automotive industry has focused its studies on electric vehicles (EVs) or hybrid electric vehicles (HEVs) rather than gasoline-powered vehicles. First, the theoretical analysis of the torque ripple in IPM machines are investigated to guide Mar 25, 2021 · The main objective of this paper is to design and analyze the performance of in-wheel outer rotor permanent magnet synchronous motor (PMSM) used in electric vehicles based on a previously designed May 1, 2023 · Based on these results, it can be concluded that 3–4 mm sleeve thicknesses and 40–50 μ m shrink fit are suitable for the permanent magnet rotor design. 1 Introduction This document is a brief introduction to the design evaluation of permanent magnet motors, with an eye toward servo and drive applications. 193 - 202 View in Scopus Google Scholar However this paper focuses only on the design of the permanent magnet rotor and uses the stator structure from an existing induction motor without changing the windings. g. Aiming at the heat dissipation for the motor, given the limitation of size, a passive cooling structure based on phase change material (PCM) is proposed in Jul 7, 2022 · This paper provides an overview of the design and analysis of high-speed PM motors by focusing on prominent issues such as motor losses, temperature rise, rotor strength and vibration. 3 Rotor Structure Design Design of Permanent Magnet. May 21, 2007 · This paper proposes a novel in-wheel motor, which artfully integrates a magnetic gear into a permanent-magnet brushless (PMBL) DC motor so that they can share a common PM rotor, hence offering both high efficiency and high power density. Due to its robust rotor structure and high torque density, it has become a suitable option for many applications like automotive, electric power generation, home appliance and etc. For high-speed PMSM, the most commonly used rotor structure is a surface permanent magnet (SPM) rotor. Mar 22, 2021 · This study purposes analysis and multi-objective design optimization of a direct drive permanent magnet synchronous motor with external rotor for low speed and high torque mixer applications. To express three different material properties (PM, FM, and air), a multi-phase level-set model representing two level-set functions is introduced and the concept of a phase-field Feb 12, 2018 · This paper investigates high-speed surface PM machine design for portable turbo-generator applications. Moreover, the spherical motor comprises a system with a spherical moving part (rotor) with four pole permanent magnet, involved by a spherical surface (stator) made of soft-iron, having a uniform gap between stator and rotor. This paper describes the design process of a high-speed rotor of a Permanent Magnet Synchronous Machine (PMSM) for a rated power of 10 kW at 100,000 rpm. Manufacturing; Permanent Magnet Rotor Design and Engineering; Permanent Magnet Assembly; Permanent Magnet Design Services; FEA Analysis; Magnet Production & Fabrication; Lamination; Magnetizing; Stabilization TYB Series Standard Type Permanent Magnet Motor. The key principle of this design method is to identify the main source of torque ripple, then guides the modification of reluctance variation along the rotor surface. Many attempts have been made to reduce critical rare earth permanent magnet materials in traction motors using full/partial substitution of cost-effective Rotor Strength Analysis and Design of High Speed Permanent 121 4 Optimum Rotor Design of HSPMSM The development of HSPMSM is limited by the strength of rotor. Apr 1, 2023 · In motors, the force created by the magnetic field between the rotor poles and the stator slots and the resulting moment are the basic components that form the movement of the rotor. The permanent magnets are oriented so that their magnetization is azimuthal. Non−magnetic Rotor Core (shaft) Stator Core Figure 2: Axial View of a Flux Concentrating Motor The geometry of one type of internal magnet motor is shown (crudely) in Figure 2. In addition, when Oct 1, 2018 · Permanent Magnet Synchronous Motor (PMSM) has been widely used in rail vehicle due to its remarkable advantage of high torque density, high efficiency and wide range of speed regulation. Induction Motor Efficiency. It is organized in the following manner: First, we describe three different geometrical arrangements for permanent magnet Oct 26, 2023 · A Permanent Magnet Synchronous Generator (PMSG) is a type of electrical generator that uses permanent magnets instead of traditional field windings in the rotor. Machine parameters and physical design details are selected to obtain constant-power characteristics over a 3:1 speed range by the design of high-speed PMSM, especially the design of high-speed PM rotor structure. Improving the air gap flux density distribution is an effective way to reduce the This article proposes an auxiliary notch design method for the interior permanent magnet (IPM) machines for suppressing torque ripple. Download: Download high-res image (249KB) Download: Download full-size image; Fig. At first, the magnetic rotor must be demounted from the stator. Jul 1, 2016 · The design process of the novel motor is generally the same as those of conventional permanent magnet synchronous motor (PMSMs). This paper discusses design of PMSM. Both the eccentric air Permanent magnet flux switching motors is a combination of Switched Reluctance Motor (SRM)) and Permanent Magnet Synchronous Motor (PMSM). This paper takes a permanent-magnet rotor as an example. Jul 2, 2021 · Comparison of Permanent Magnet Rotor Designs for Different Vehicle Classes and Driving Scenarios: A Simulation Study. First, the design rule of the motor size is introduced. Construction of Permanent Magnet DC Motor or PMDC Motor. In this paper, four different rotor structures of high-speed IPM motors are compared comprehensively, including rotor stress, electromagnetic and loss Jan 1, 2014 · The analytical models of the rotor strength, the rotor modal and the electromagnetic field of the magnetic bearing and the permanent magnet motor are established. Second, the appropriate numbers of motor poles and slots are selected to improve the torque density and save the radial space of the motor. This structure improves the air-gap flux density waveform of the motor by influencing the internal magnetic flux path of the motor rotor, thus improving the Optimization Design of High-speed Interior Permanent Magnet Motor with High Torque Performance Based on Multiple Surrogate Models 20000r/min HSIPMM whose A general pattern, which can include different types of permanent magnet (PM) arrangement in PM synchronous motors (PMSMs) is presented. The IPM uses a double-layer permanent magnet (PM) rotor structure, and the shape Jan 27, 2020 · This design considers rotor and stator parameters, including the distance between magnets, rotor diameter, rotor plate thickness, area of a magnetic area, number of stator coils, number of stator Mar 17, 2017 · Permanent-magnet synchronous machines (PMSMs) are considered a very promising machine type for high-speed (HS) applications. During the design process, not only the electromagnetic and loss characteristics of the high-speed IPM motor, but also the maximum stress of the rotor should be considered. The cooling of the rotor is a great obstacle in motor design because of the single way of heat dissipation. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. In order to have products as desired, uncertainties must be quantified in the design process. In a BLDC motor, contacting brush-and-copper commutation doesn’t bring current to the rotor. The soft magnetic composite (SMC) was adopted in the FMP overhang to allow more axial flux. Towards this goal, generator design programs were created for permanent Jan 23, 2012 · This paper proposes a new optimization method to design the rotor of interior permanent magnet (IPM) motor which consists of a permanent magnet (PM) and ferromagnetic material (FM) for reducing the torque ripple. Khazdozian and Ravi L. First, the influence of rotor design parameters, including magnetic bridge thickness, rib width and stiffener thickness To broaden the speed regulation range and enhance the capability of output torque, a dual-subregion rotor design of the permanent magnet hub motor is newly proposed. 05. The only variable design factor in each 3. L. Self and mutual inductance in the coils will add a reactive component to the windings impedance, likely accounting for the remaining losses. To increase power output for a given speed, rotor design becomes critical in order to maximize rotor volume and hence torque output for a given electrical loading and cooling capability. Figure 1 shows 1/8 models of a rotor without an eccentric arc design, a rotor core designed with a conventional eccentric arc, and a rotor core designed with the improved eccentric arc. Apr 3, 2024 · This work presents the analysis, design and optimization of a high-speed interior permanent magnet (IPM) rotor. The electromagnetic analysis is carried out by simplified 2D finite element (FE) models Feb 24, 2009 · This paper presents a method on a multiobjective optimal design of interior permanent magnet synchronous motor (IPMSM) with V-shaped permanent magnet rotor for high performance. Compared with the electric motor operated under normal speed, it is critical to reduce the torque ripple, vibration, and noise of the HSPMSM. All models are related to the real actuator/motor used in dishwasher pumps (Figure 1). In addition, the core material, the In this paper, an inner rotor low speed permanent magnet motor LSPMM) for mine direct drive system is designed. Rotor design criteria according to Permanent Magnet Synchronous Motor (PMSM) has been widely used in rail vehicle due to its remarkable advantage of high torque density, high efficiency and wide range of speed regulation. In addition to the segmented dipole IPM design, we also analyze several other bearingless IPM rotor design concepts and present comparisons of their predicted performance. Although, FEA is finally used to correct the inaccuracy Apr 17, 2022 · 3. This paper addresses the considerations and challenges of the rotor design of high Dec 25, 2017 · This paper describes the rotor design of high-speed permanent magnet (PM) synchronous motors considering rotor magnet and sleeve materials. In the pa-per, the initial design of the generator is given. This paper presents a robust design optimization of an outer rotor surface mounted permanent magnet motor with particular Aug 24, 2022 · On this basis, the rotor dislocation is developed and a unique structural design is developed. SPMSMs use only magnetic torque; however, interior PMSMs (IPMSMs) have high power densities because they can use reluctance torque. Oct 4, 2016 · With high efficiency and power density, interior permanent magnet (IPM) synchronous machines have been employed in many commercialized electrified powertrains. These motors often use a permanent magnet rotor with the magnets retained within an interference fit external sleeve. Permanent magnet generators are synchronous machines with rotor windings replaced by permanent magnets. Aug 8, 2023 · This article investigates the influences of the rotor design on air-gap field modulation (AGFM) theory in spoke-type permanent magnet (STPM) machines for traction applications. 1016/J. 2017. In some motors, these magnets are mounted with adhesive on the surface of the rotor core such that the magnetic field is radially directed across the air gap. High-speed electric machines are becoming increasingly important and utilized in many applications. Due to the structural characteristics of PMRHDRM, the impact on the tensile stress of the permanent magnet is relatively small. to design BLDC motors in two ways as the inner rotor (In runner) and outer rotor (Outrunner). The 3-D finite element analysis (FEA) was carried out to prove that the proposed machine can Jan 14, 2019 · He Q, Wang Q (2012) “Optimal design of low-speed permanent magnet generator for wind turbine application. But an external rotor motor, also referred to as an "outer rotor" or "outrunner" motor, is designed with the rotor on the outside and the stator housed inside the rotor. A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The maximum power of the motor at rate speed can be obtained by finding the Dec 1, 2017 · Realisation of electrically boosted turbochargers requires electric motors capable of operating at very high speeds. This paper proposes a novel flux adjustable permanent magnet coupler (PMC) with a double-layer permanent magnet rotor (PMR). Mar 1, 1998 · A synchronous motor with two-part rotor is described whose rotor comprises a surface-magnet part and a reluctance part mounted adjacent to each other on the same axis. A Jul 8, 2024 · For high speed interior permanent magnet (IPM) motor, the measures to improve rotor strength inevitably affect electromagnetic, loss and temperature characteristics, which makes it difficult to judge which rotor structure is better in design. This paper mainly presents the principal of Apr 1, 2012 · For example, Leesonâ s Platinum eâ ¢ permanent-magnet technology reduces rotor losses to save energy for myriad fractional and integral horsepower motors; a patent-pending radial magnet design You will receive outstanding support at every stage of your project, no matter what material you choose or how complex your design. This can be particularly acute in interior permanent magnet (IPM) machines in which magnets are usually retained entirely by the rotor core with no additional mechanical containment. Based on the analysis of rotor material and strength theory, the strength checking criteria for different types of rotor materials were summarized. Furthermore, The air-gap flux density total harmonic distortion and electromotive force total harmonic distortion determine by torque performance A robust design optimization of an outer rotor surface mounted permanent magnet motor with particular application in the hybrid vehicle using the design for six-sigma methodology is presented. Hadimani and David C. After the air gap length and air gap flux density values had been determined, the magnetic design was made and the magnet thickness was determined from the following equation: In this paper, the electromagnetic design of a high-speed interior permanent magnet (IPM) is proposed. This work investigates the effect of design parameters of permanent magnets (PMs) and flux barriers (FBs) in the rotor on the anti-demagnetization ability (ADA) of fractional slot concentrated windings interior PM (IPM) motors for electric scooters. Permanent-magnet (PM) motors have a stator winding configuration similar to the three-phase induction motors, but they use permanent magnets in the rotor instead of a squirrel cage or wound rotor. Optimal design of the enclosure is the focus of this paper. The permanent-magnet rotor tracks with synchronism the stator rotating field, and therefore the rotor speed is equal to the rotating magnetic field Sep 12, 2023 · In recent years, in order to further improve the motor efficiency and torque density, scientists from different countries have developed various types of double rotor motors, such as double rotor permanent magnet motors with different pole topologies (NS) (Qu and Lipo, 2003) and double rotor disc motors with modified stator core yoke (Liu and Oct 14, 2002 · The most important magnet layouts in rotors of hybrid permanent-magnet synchronous machines (PMSM) for electric vehicles are compared in a variety of characteristics. This study focuses on the accurate modelling and analysis of the natural frequencies and modes of the rotor assembly for a designed and manufactured 100 kW 32,000 r/min motor. Jun 29, 2020 · In this paper, a salient-pole permanent magnet synchronous machine (SPPMSM) is introduced to high-speed trains, taking advantage of its high utilization of the reluctance torque from the unbalanced reactance. As it is indicated in name of permanent magnet DC motor, the field poles of this motor are essentially made of permanent magnet. The use of surface mount permanent magnet structure can save the space of the motor. A 2. By choosing the best arrangement of PMs using optimization method, one can obtain a better performance and lower Jul 27, 2024 · Electric motor - Permanent Magnet, Rotor, Stator: The magnetic field for a synchronous machine may be provided by using permanent magnets made of neodymium-boron-iron, samarium-cobalt, or ferrite on the rotor. Own approach for the disassembly of PMSM Rotors In the following, a new process chain for the disassembly for PMSMs is derived from their typical design. Instead, the rotor’s permanent magnet field trails the rotating stator field with its rotor field. The technical parameters of a high-speed permanent magnet motor were preliminarily designed The main difference between a permanent magnet synchronous motor (PMSM) and an induction motor is in the rotor. Apr 21, 2010 · High-speed permanent magnet rotors need a non-magnetic enclosure so as to ensure structural integrity of the rotor at elevated speeds. To this end, a 2-D analytical magnetic model, combined with a teaching–learning based optimisation algorithm is employed. The structure schematic diagram of the surface-mounted permanent magnet rotor with segmented PMs is shown in Fig. I. A PMDC motor mainly consists of two parts. The figure below shows the general layout of both the Permanent Magnet motor (on the left) and the induction motor (on the right). There is always uncertainty in industrial manufacturing. They are located between wedges of magnetic material (the pole pieces) in the rotor. 2 and derived from the design of the PMSM Rotor shown in chapter 1. 5 kW HPMG design was the permanent magnet material. However, high The interior permanent magnet synchronous motor (IPM) for electric vehicle drive has the disadvantages of high torque ripple and high vibration. Keywords — Permanent magnet synchronous machine, FEM, design optimization. Permanent magnets are used to create magnetic fields without any magnetomotive force. RENENE. Chen J, Nayar CV, Xu L (2000) Design and finite-element analysis of an outer-rotor permanent-magnet generator for directly coupled wind. Download: Download high-res image (74KB) Download: Download full-size image; Fig. The process chain for the disassembly is shown in Fig. Nov 1, 2017 · In permanent magnet machines, Joule losses will not be purely resistive. Based on the rigid space envelope limits and performance specifications required by the vehicle, four candidate A family of vernier permanent magnet machines utilizing an alternating rotor leakage flux blocking design Abstract: Since the vernier machine (VM) is a flux modulation machine that also operates simultaneously as a synchronous machine, the torque producing mechanism of this device is difficult to understand. ; Zhang, X. The feasible 24S-14P topology designed using JMAG Software is used. com Feb 24, 2012 · Small fractional and sub-fractional KW motors are often constructed using a permanent magnet. This paper proposes a novel in-wheel motor, which artfully integrates a magnetic gear into a permanent-magnet brushless (PMBL) DC motor so that they can share a Apr 3, 2024 · DOI: 10. The use of soft magnetic composites (SMC) for the rotor core and the stator poles enables a compact design, efficient and smooth operation, particularly profitable for home appliances. With this rotor structure, the torque density and power density are improved obviously, while the rotor inner diameter can be maximized to reduce core material and Apr 1, 2023 · Aiming at the rotor strength problem of high speed permanent magnet synchronous motor (HSPMSM), a design method for maximum outer diameter of permanent magnet is proposed. Mar 29, 2018 · For the high-frequency permanent magnet electrical machine, a reasonable mechanical aspect design is crucial to meet its stability and reliability. By employing dual-subregion design, the rotor is tactfully designed into two regions, named near-permanent-magnet (near-PM) region and near-airgap (near-AG) region, respectively. In particular Apr 5, 2016 · A permanent magnet synchronous motor (PMSM) motor is used to design the propulsion system of GM’s Chevrolet Bolt battery electric vehicle (BEV). This study investigates the nature of the trade-off between mechanical See full list on controleng. The proposed motor has fractional slot structure with a spoke-type rotor geometry and flux-assisted magnets. The design challenges of high-speed PM motors are briefly described, and the application of various stator and rotor structures and materials is presented in electromagnetic design. Secondly, the impact of various pole-slot ratios on the performance of the motor is then examined in three motors with Feb 26, 2019 · This paper presents a novel outer rotor permanent-magnet vernier machine (PMVM) for in-wheel direct-drive application. Sep 1, 2022 · For a small-sized outer-rotor permanent magnet (PM) motor during overload operation, the internal heat increases sharply and the effective heat dissipation area is seriously insufficient. How-ever, the SPM rotor requires an external retaining sleeve such as titanium alloy, stainless steel, and carbon ber sleeve to May 12, 2013 · The paper proposes a novel configuration of a direct-drive single-side axial flux motor for hydraulic pump applications. October 2016; In this paper, three different IPM rotor design configurations, which have been May 24, 2018 · This study is concerned with the unified analytical solution of rotor strength for the segmented permanent magnet (PM) rotor retained by the carbon-fibre sleeve and non-magnetic alloy sleeve in high-speed surface-mounted permanent magnet synchronous machine. ; Xiao, S. A hybrid rotor containing both slotted solid steels and cage bars is included in the designed LSPMSM to enhance the motor starting and synchronizing abilities. The PMs in both parts are, respectively, staggered arrangement by N- and S-poles with tangentially magnetized direction. A stator and an armature. Oct 10, 2010 · The paper reports on the design of a 20000 rpm, 3-phase brushless permanent magnet DC motor for use in a friction welding unit, in which studs up to 3 mm diameter are welded by coordinating the Oct 4, 2016 · Design and Comparison of Interior Permanent Magnet Motor Topologies for Traction Applications. In this study, an outer-rotor permanent-magnet-assisted synchronous Oct 20, 2020 · The present study investigated the design, simulation, and manufacturing of a new coreless stator axial-flux permanent-magnet motor. The inner part can be controlled to rotate to adjust the relative Sep 17, 2020 · where Φ is the magnet flux crossing the air gap, R is the total reluctance through the flux paths and θ is the rotor angle. This study focuses on the accurate modelling and May 13, 2019 · In order to deal with a lot of geometrical parameters involved in the design of the rotor and decrease the optimisation time, for both internal and external rotor SynRM, analytical studies have presented detailed magnetic lumped parameter models including the saturation effect [8, 14, 15]. In general, a design method adopting equivalent magnetic circuit is used for basic design of IPMSM. Adopt high-efficiency NdFeB permanent magnet, no excitation loss, and through special rotor structure design, greatly reduce iron loss and stray loss, the efficiency of the whole machine reaches above IE4 standard, the efficiency is increased by 5-10%, and the power factor is improved 10-15% or more. The two main constraints on In 1993, Integrated Magnetics began rotor production for the aerospace industry, establishing the first of its kind, high-volume production plant for precision rotors. Combined with the temperature Our power-dense permanent magnet rotor materials are lightweight which allow us to produce top quality, high energy efficient motors. The working principle of the motor is explained, the magnetic circuit model of the motor is analyzed, the mathematical model of the motor is given, and the contribution of permanent magnet assistance to torque is discussed. Sep 1, 2023 · Permanent magnet motors have become an important component of industrial production, transportation, and aerospace due to their advantages of high torque density, high power density, high reliability, low losses, and high efficiency. In the near-PM region, the method of magnetic flux Permanent Magnet “Brushless DC” Motors ∗ J. Inner rotor design or inrunner The majority of BLDC motors use the arrangement where the permanent magnet rotor is inside a wound stator. 5. 2. To elevate performance of the benchmark motor rapidly, a back Aug 14, 2023 · At the same time, considering the economy of the motor, the rotor adopts a permanent magnet/reluctance hybrid structure, that is, the outer motor adopts a permanent magnet rotor, and the inner motor adopts a reluctance rotor, and a magnetic isolation ring is installed between the permanent magnet and the reluctance, thereby playing a role in In this study, design equations of axial flux double rotor permanent magnet synchronous motor (TORUS Type) were obtained and optimization of the motor with a genetic algorithm was realized. Jan 26, 2023 · A surface-mounted permanent magnet synchronous motor (SPMSM) is an electric motor with a simple magnetic circuit design, fast responsiveness, linear torque–current characteristics, speed–voltage characteristics, and constant operating speed. A salient rotor periphery making air-gap length, which maximizes at Index Terms—permanent magnet synchronous machine, wound rotor synchronous machine, design, efficiency, mass, rectifier, converter I. rINTRODUCTION r Many research activities are focused on permanent magnet (PM) rotor design investigation. typing of directly driven outer rotor permanent mag-net generator for small scale wind turbine. Oct 1, 2022 · In-wheel, outer rotor, permanent magnet synchronous motor design with improved torque density for electric vehicle applications October 2022 International Journal of Electrical and Computer With an Advanced Step-Skewed Rotor Design WEI CHEN 1,2, JIEN MA 3, GUICHU WU1,2, AND YOUTONG FANG 3, (Senior Member, IEEE) interacting effect between the rotor permanent magnet (PM) Permanent Magnet Motor vs. The stator designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible There is a strong trend in using permanent magnet synchronous machines for very high speed, high power applications due to their high efficiencies, versatility and compact nature. The Straight type is the most versatile rotor design, having no very bad Mar 13, 2024 · This paper presents a comprehensive investigation into the design and optimization of a multi-barrier interior permanent magnet synchronous motor tailored for e-scooters and electric bicycles. However, its use may give us wrong design result because of air-gap flux calculation method by using lumped reluctance Aug 11, 2014 · This paper presents a comparative design study on Permanent Magnet (PM) rotor topologies for high speed aircraft starter-generators. Magnets are buried inside the rotor in two layer ‘V’ arrangement. Therefore, at the initial design the impact of the rotor radius to critical parameters is analyzed analytically. 1007/s42835-024-01898-5 Corpus ID: 268909081; Analysis, Design and Optimization of a High-Speed Interior Permanent Magnet Rotor @article{Zhang2024AnalysisDA, title={Analysis, Design and Optimization of a High-Speed Interior Permanent Magnet Rotor}, author={Chao Zhang and Lan Zhang and Xiaoyu Wang and Renyuan Tang}, journal={Journal of Electrical Engineering \& Technology}, year May 1, 1997 · This study proposes design procedures for the permanent-magnet-biased magnetic bearings (PEMBs) in rotor systems. Among the various candidates related to this, the Oct 26, 2023 · The Rotor: The rotor is made from a magnetic material, and it’s designed to interact with the stator’s magnetic field when it spins. This paper explores the design of a 4-pole stator and 2-pole rotor Permanent Jun 22, 2018 · A new flux-assisted consequent pole spoke-type permanent magnet (PM) synchronous torque motor is proposed in this paper. The arrangement and type of permanent magnets on the rotor directly influence the generator’s efficiency. the selection of a permanent magnet material, dimensions of electromagnets and permanent magnets, gap length, load capacity and maximum Ampere-turns. This attraction spins the rotor. This design enables PMSG to produce electricity at a constant frequency, regardless of the rotor’s speed. Permanent magnets are added into rotor flux barriers based on optimized synchronous reluctance motor rotor geometry. Jul 4, 2007 · The prototyped spherical motor offers the ability to spin continuously while the shaft is tilted arbitrarily up to ±45° from the z-axis. These generators are used with wind turbines, gas turbines, and hydro turbines. Many aspects of designing magnetic bearings are discussed, e. Studies 1 show that the PMSM has an efficiency of approximately 2% more than a highly efficient (IE3) induction electric motor, provided that the stator has the same design, and the same variable frequency drive is used for control. Main issues and phenomena affecting the generator design, such as cogging torque and its reduction possibilities, selection and demagnetization risk assessment of per- Jun 6, 2018 · Conventional DC motors have a permanent magnet rotor located inside the wound stator. A novel scheme based on the multi-physical field coupling method was proposed for rotor design of the high-speed surface-mounted permanent magnet motors. Improved permanent magnet synchronous motor rotor position observer based on proportional Feb 9, 2018 · Electric machines with permanent magnet rotors are becoming increasingly popular due to the high power density that they offer relative to other configurations. The rotor with surface-inserted PMs can be considered as the rotor with segmented PMs and fillings in the analysis of rotor stresses, and the filling material is the same as that of the core. This design ensures that it is a simple and cheap solution. An axially laminated construction is used in the reluctance part to achieve a high saliency ratio. Jan 25, 2020 · The enclosed permanent magnet synchronous machines have been developed rapidly in recent years. A study and performance analysis of magnet positions in different topology on the surface of rotor in permanent magnet synchronous motors (PMSMs) based on finite element method is observed here. However, the level of saturation for the rotor magnetic path is different between a PMaSynRM and a SynRM due to these added magnets Aug 10, 2020 · This study proposes an outer-rotor permanent magnet synchronous hub motor (PMSHM) with similar pole and slot numbers for an electric vehicle (EV). 1 Design of Rotor Eccentric Arc and Performance Analysis. Published in: 2019 4th International Conference on Power Electronics and their Applications (ICPEA) Feb 12, 2024 · Interior permanent magnet motors are widely used in applications requiring high power density and high efficiency due to their high torque-generating capabilities. In recent years, permanent magnet synchronous motors (PMSMs) are widely preferred in the industry especially as servo systems because of their advantages such as high efficiency, high power density, the ability to operate at Sep 2, 2020 · To achieve good performance from the outer rotor PMSG, NdFeB N35 types PMs with high energy density with zinc coating were used. Different rotor design concepts are investigated whilst keeping both the stator and the rotor diameter consistent. May 23, 2018 · The motor uses a Halbach array permanent magnet rotor, which can improve the torque density of the propulsion motor by utilizing the unilateral magnetic field of the Halbach array. The PMR, as the only excited source, is divided into the inner and outer parts. Mar 1, 2021 · This paper has presented the design and optimization of outer-rotor permanent magnet flux switching motor using transverse segmental rotor for automotive applications. Since then, we have become one of the industry's leading turn-key manufacturers of high-speed permanent magnet rotor assemblies for global tier-one aerospace and automotive clients. Jan 1, 2023 · 3. The permanent magnet (PM) arrangement and iron bridge shape have a significant influence on the stress of rotor core and electromagnetic performance. That is, the squirrel cage rotor is replaced by a newly designed permanent magnet rotor. In this paper, the electromagnetic properties of the motor were measured and compared with that of the ordinary magnetic pole motor through numerical analysis. 5 kW IPM motor (12 slots and 8 poles) is designed for a wide speed range, and its ADA associated with different PM and FB arrangements is Dec 5, 2019 · The permanent magnet synchronous generator uses permanent magnets on roots rather than an external excitation source. They need no separate excitation so rotor excitation losses – about 30% of total conventional generator losses – are eliminated. For this reason, more investment has been made in electric motors with high efficiency, high torque density, and high-power factor to be used in both EVs and HEVs. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature. The excitation magnetic field of the permanent magnet is a standard sinusoidal magnetic field, which can provide a large magnetic potential, which is convenient for the design of large air gaps and is conducive to ventilation and heat dissipation. Initial design, rotor design optimization, detailed 2-D and 3-D finite-element analyses (FEAs), and structural and thermal simulations are all carried out. Jul 15, 2020 · This article presents a successful design of a three-phase large capacity line-start permanent magnet synchro nous motor (LSPMSM) developed for industrial applications. The proposed configuration has single stator and single rotor for the axial flux permanent magnet Brushless Direct current Motor (BLDC) machine. Where the speed of rotation is high, the magnets are typically mounted on the surface of the rotor and retained by an outer sleeve. The sensing system is used to provide rotor angle and radial position estimates for force commutation, torque commutation, and closed-loop radial suspension feedback control Jul 30, 2022 · The parameter design of MPF was analyzed. it comes with a simple design without slip rings or brushes. Sep 12, 2023 · High speed permanent magnet synchronous motor (HSPMSM) is an important driving motor for electric vehicles. The principle of revolving magnetic field in the stator section of the motor is similar to the 3-phase induction motor. The novel motor differs from conventional PMSMs in rotor structure, and therefore the design method of the rotor is elaborated in this section. Due to flux-concentrated effect, STPM machines exhibit abundant air-gap field density harmonics and relatively high torque density. 1 Rotor Structure and Parameters. In the permanent magnet design, the rotor contains a series of magnets either internal or external to the OD of the rotor. Firstly, using the finite element approach, it analyses how the thickness of the permanent magnet and the pole arc coefficient affect electromagnetic properties. This article presents a new interior permanent magnet (IPM) rotor structure/ assembly, which inherits from the Halbach magnet configuration and spoke-type IPM rotor to achieve a high saliency ratio and high torque/ power density. In the outer rotor design, the permanent magnets are wrapped around the stator windings, in the inner rotor design, the stator windings are the permanent magnets. Firstly, based on the May 22, 2023 · External rotor permanent magnet machine is a key technology of distributed electric drive system in electric vehicles and it is widely used in wheel hub. By varying the geometric parameters of the general pattern, the template can automatically produce different types of PM arrangement in the rotor. This paper mainly presents the principal of Schematic of a permanent magnet motor. A 2-kW 600/4400 The coil windings produce a rotating magnetic field because they’re electrically separated so can be independently turned on and off. Permanent magnet claw pole motor (PMCPM) is a special type of transverse flux motor which has a higher torque density compared to traditional permanent magnet Sep 26, 2023 · Other types of permanent magnet assisted reluctance dual-rotor motor topology: (A) Hyperbolic magnetic barrier, (B) Plug-in permanent magnet, (C) Segmented magnetic barrier, (D) ARC barrier. These uncertainties have an undesirable impact on the products if deterministic optimization approaches are employed. The permanent magnets can either be stationary or rotating; interior or exterior to the armature for a radial flux machine or layered with the armature for an axial flux topology. Dec 21, 2023 · In many high-speed electrical machines, centrifugal forces within the rotor can be first-order constraints on electromagnetic optimization. Dec 1, 2022 · Optimal design of an exterior-rotor permanent magnet generator for wind power applications J Oper Autom Power Eng (JOAPE) , 9 ( 3 ) ( 2021 ) , pp. 1 [12,13,14]. Rotors of electrical high speed machines are subject to high stress, limiting the rated power of the machines. The rotor sleeve occupies space of the effective airgap of the PMSMs; therefore, it is difficult to perform Mar 8, 2024 · Considering the special structure and small volume requirements of the heart pump, this paper proposes a 5-degree-of-freedom stable suspension strategy for the rotor with axial permanent magnet passive suspension and radial electromagnetic active suspension, as shown in Fig. Analytical modelling of mechanical stress in the rotor is presented. The model distinguishes between influences of enclosure geometry and fitting on the stress, while also considering rotational speed . Auxiliary slots on the rotor surface can improve the air gap magnetic density sinusoidality by changing the magnetic permeability at different positions of the air gap. Abstract: This paper concerns the design optimization of an outer-rotor permanent magnet synchronous machine (PMSM) with fractional-slot and concentrated-winding (FSCW) configuration for a lightweight direct-drive electric vehicle. Dec 2, 2022 · 2. The influence of four different sleeve materials with two different PM materials on the mechanical stress of a high-speed PM rotor is presented, and the relationship between sleeve thickness and shrink fit is examined. In this paper, three different IPM rotor design configurations, which have been used in electrified powertrains from Toyota, Nissan, and General Motors, are comparatively investigated. Huang, K. It is clear that if the reluctance R does not vary as the rotor rotates, then the cogging torque T cog is zero. The Chevrolet Bolt BEV electric machine rotor design optimizes the magnet placement betwe Jul 10, 2019 · There is always uncertainty in industrial manufacturing. SMALLER, FASTER & HOTTER DESIGN CHALLENGES In order to achieve performance goals, designers of high-performance electric machines must balance several challenges including: The interior permanent magnet synchronous machine (IPM) with a double-layer permanent magnet (PM) rotor structure is a good candidate machine for electric vehicle drive systems due to its high torque ability and efficiency, however, it also has the disadvantages of high cogging torque and high vibration noise. Conventional IPM topologies that are highly capable of extended field weakening are found to be limited Mar 29, 2018 · For the high-frequency permanent magnet electrical machine, a reasonable mechanical aspect design is crucial to meet its stability and reliability. The objective of this paper is to design and select the stator. Kirtley Jr. In addition, to magnets with magnetisation along the motor axis, the new structure included magnets that were magnetised circumferentially and buried at the rotor surface. The key challenge in the design is to satisfy two operating conditions that are a high torque at start and a high speed at cruise. The overhang structures of the rotor and flux modulation pole (FMP) are introduced. Aug 11, 2022 · In permanent magnet motors, magnets attached to the edge of a spinning rotor produce a magnetic field that is attracted to the opposite poles on the spinning field. For the high-speed IPM rotor, mechanical stress which is caused by centrifugal force is the main problem. The application requirements associated with the aircraft starter and generator operation is highlighted. In other designs, the However this paper focuses only on the design of the permanent magnet rotor and uses the stator structure from an existing induction motor without changing the windings. Magnetic field zones of the rotor of the NR-PMSM are given in Fig. May 24, 2023 · In this paper, a 20kW vehicle built-in permanent magnet synchronous motor is taken as an example, and a magnetic barrier structure is added to the rotor of the motor to solve the uneven saturation problem of the rotor side magnetic bridge. Firstly, on the basis of mechanics of materials, the stress analytical model of HSPMSM rotor Sep 19, 2022 · 2. Optimizing the rotor design of PMSM, has become the main methods to achieve good sinusoidal wave form of air-gap flux density and to reduce the vibration noise. May 21, 2007 · A novel in-wheel motor is proposed, which artfully integrates a magnetic gear into a permanent-magnet brushless (PMBL) DC motor so that they can share a common PM rotor, hence offering both high efficiency and high power density. So, the third-generation algorithm NSGAIII was used and compared with the second-generation algorithm NSGAII. The different PM position influences machine behavior. 034 Corpus ID: 113785513; Development of rare earth free permanent magnet generator using Halbach cylinder rotor design @article{Khazdozian2017DevelopmentOR, title={Development of rare earth free permanent magnet generator using Halbach cylinder rotor design}, author={Helena A. The two main advantages are high heat dissipation efficiency due to the windings’ position, and the ability to minimise the overall girth of the motor unit. In this paper, an external rotor permanent magnet machine for in-wheel applications with fractional slot concentrated winding (FSCW) structure is introduced as a benchmark motor. Jiles}, journal={Renewable Energy}, year May 15, 2022 · The article presents various solutions for a sensorless motor with three stator teeth and a simpler rotor based on a single permanent magnet in the form of a ring. ” In: Asia-Pacific power and energy engineering conference, APPEEC, vol 6012179, pp 0–2. bacf duxhj svwct biyq hmyp vekimv ppptd szysmbtt wvqhpd cdbuit