Design and Analysis of Normal Saliency IPM Spoke Motor

Fontana, Michele

doi:10.1109/tia.2020.2988842

Cited by 18 publications

(11 citation statements)

References 20 publications

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“…Among the various PM motors, the spoke-type ferrite PM motor has a structure in which two magnets face each other. Therefore, it has gained substantial popularity because it can obtain a magnetic flux concentration effect [10], [11], [12], [13], [14], [15], [16]. These spoke-type ferrite PM motors promote magnetic flux concentration when the cross-sectional area of the surfaces of a pair of magnets that generate magnetic flux is larger than that of the air-gap.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines

et al. 2023

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In this study, we propose a novel analysis method for a spoke-type permanent magnet (PM) synchronous motor (PMSM) using two types of PMs that consider axial leakage flux using a magnetic equivalent circuit (MEC). Spoke-type ferrite PMSM have the advantage of concentrating magnetic flux; however owing to the shape in which the PMs are arranged along the radial direction, some magnetic flux leaks in the axial direction, which causes inconsistency between the 2D and 3D finite element analysis (FEA) results. Because 3D FEA requires considerable analysis time, using it in the initial design stage of the motor is inefficient. Therefore, we present a new analytical method combined with MEC to overcome the existing inefficient approach. To obtain analysis results equivalent to 3D FEA, the new residual magnetic flux density considering axial flux leakage was applied to 2D FEA PMs using MEC and 2D FEA. The validity of the proposed method was verified through 3D FEA and experiments conducted on the test models using two magnet types.INDEX TERMS Axial flux leakage, ferrite permanent magnet motor, hybrid magnet, less-rare-earth motor, lumped magnetic equivalent circuit, spoke-type permanent magnet motor.

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Section: Introductionmentioning

confidence: 99%

Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines

et al. 2023

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“…Wound rotor synchronous machines (WRSM), fed by load commutated inverters, are suitable for high-power applications. On the other hand, interior permanent magnet (IPM), surface permanent magnet (SPM) [2] and reluctance (REL) synchronous motors are preferable in the low and medium power range which are slightly replacing induction motors (IM)s. A non-standard configuration that exhibits promising performance is represented by the Normal-Saliency PM (NSPM) motor [3]. Finally, an interesting compromise is represented by hybrid excited permanent magnet (HEPM) motors, which combine the benefit of wound rotor machines and permanent magnet synchronous motor (PMSM) [4].…”

Section: Introductionmentioning

confidence: 99%

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

2022

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This paper deals with motor design aspects and control strategies for the flux-weakening (FW) operation of synchronous motors. The theory of FW is described by taking into account different control schemes. The advantages and drawbacks of each one are discussed, as well. Moreover, some motor design considerations for achieving an effective FW operation are illustrated for permanent magnet (PM), wound rotor (WR) and reluctance (REL) synchronous machines, using the per unit approach. The distinguishing characteristic of this review provides two-fold attention on both machine design and control strategies obtained by several collaborations with industrial and commercial companies.

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“…The authors in refs. [15–19] investigated the characteristics of a spoke‐type permanent motor with different shapes and dimensions of the magnetic barrier near the air gap (MB‐NAG). Chen et al.…”

Section: Introductionmentioning

confidence: 99%

“…The authors in refs. [15][16][17][18][19] investigated the characteristics of a spoke-type permanent motor with different shapes and dimensions of the magnetic barrier near the air gap (MB-NAG). Chen et al [15] proposed a novel spoke-type permanent-magnet motor with auxiliary salient poles.…”

Section: Introductionmentioning

confidence: 99%

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Effect of rotor magnetic isolation dimensions on no‐load performance of ultra‐low speed high torque spoke type permanent magnet motor

Sun

Guo

et al. 2022

IET Electric Power Appl

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This study investigates the effects of rotor magnetic isolation dimensions on the noload performance of ultra-low speed high torque spoke type permanent magnet motor. The studied spoke type permanent magnet motor structures are shown, where the rotor magnetic isolation parts include a magnetic barrier near the air gap (MB-NAG), a magnetic barrier near the magnetic isolation sleeve (MB-NMIS), a magnetic isolation sleeve (MIS). The magnetic circuit model is performed and the finite element analysis method is used to analyse the no-load performance. Through analysing no-load performance with three MB-NAG shapes, the way to narrow the optimise dimension range considering reducing the cogging torque and increasing the back-EMF synchronously is concluded. The results with different MB-NMIS and MIS dimensions show that: (a) the optimised MB-NMIS dimensions can increase the back-EMF with a thin MIS in a certain dimension range of MB-NMIS, and (b) the increasing proportion of back-EMF influenced by the MB-NMIS is inversely proportional to the thickness of MIS. The feasibility and effectiveness of the proposed motor structure and conclusion are experimentally verified.

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Design and Analysis of Normal Saliency IPM Spoke Motor

Cited by 18 publications

References 20 publications

Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines

Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

Effect of rotor magnetic isolation dimensions on no‐load performance of ultra‐low speed high torque spoke type permanent magnet motor

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