Evaluation of Magnetic Suspension Performance in a Multi-Consequent-Pole Bearingless Motor

Asama, Junichi; Nakamura, Ryota; Sugimoto, Hiroya; Chibá, Akira

doi:10.1109/tmag.2011.2158076

Cited by 20 publications

(15 citation statements)

References 21 publications

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“…In einer frühen Arbeit wurde ein lagerloser Reluktanzmotor von A. Chiba, K. Chida und T. Fukao entwickelt [541]. Eine Besonderheit der letztgenannten Motorgruppe stellen die Consequent-Pole Motoren dar [576,577,578,579], die über einen Rotor verfügen, der abwechselnd ferromagnetische und permanentmagnetische Pole trägt. Neben dem lagerlosen Reluktanzmotor wurden eine Vielzahl von Untersuchungen an lagerlosen Asynchronmotoren [542,566,567,568,569], lagerlosen geschalteten Reluktanzmotoren [570,571,572], sowie an lagerlosen Motoren mit permanentmagnetischer Erregung [546,547,548,573,574,575] durchgeführt.…”

Section: Industrielle Anwendungsmöglichkeitenunclassified

Elektrische Antriebe - Grundlagen

Schröder¹

2013

Springer-Lehrbuch

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Section: Industrielle Anwendungsmöglichkeitenunclassified

Elektrische Antriebe - Grundlagen

Schröder¹

2013

Springer-Lehrbuch

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“…At present, scholars have done a lot of research work on the consequent-pole structure of bearingless permanent magnet motors [16]- [19], but few research work is focused on consequent-pole PMSM. For this reason, research of CPM is necessary and significant.…”

Section: Introductionmentioning

confidence: 99%

Inductance Characteristic Analysis of Consequent-Pole Permanent Magnet In-Wheel Motor

Wang

Qiu

et al. 2019

IEEE Access

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This paper presents inductance characteristics analysis of the consequent-pole permanent magnet in-wheel motor (CPM). Considering the specialty of consequent-pole structure, this paper analyzes the change rule of the winding self-inductance via equivalent magnetic circuit method (EMCM). The corresponding equivalent resistance is directly given when the rotor is in different positions. Based on this, equivalent magnetic circuit (EMC) that reflects the inductance of the CPM is summarized in this paper. In order to analyze the difference and connection of the inductance among the CPM, two models with 36 slots 32 poles and 48 slots 40 poles are established and compared. Moreover, the Fourier analysis expression of winding self-inductance is deduced to prove the different periodicities of winding self-inductance between two motors. The experimental result is consistent with the theoretical analysis, and the conclusion effectively proves the close relationship between the inductance characteristics and its internal structure of the motor. INDEX TERMS Consequent-pole, equivalent magnetic circuit method (EMCM), self-inductance, periodicity.

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“…1 The CP rotor is also employed in bearingless motors, which can provide enough and stable magnetic suspension force. 2,3 Additionally, the CP rotor in magnetic gear, magnetic-field modulated brushless double-rotor machine, vernier machine and flux-reversal PM machine is investigated, which shows the CP rotor can improve their toque density or power density by 5%∼30%. [4][5][6][7][8] It verifies the application feasibility of CP rotor in special electrical machines.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a less rare-earth permanent-magnet machine with the consequent pole rotor

et al. 2018

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Minimization of torque ripple in ferrite-assisted synchronous reluctance motors by using asymmetric stator AIP Advances 8, 056606 (2018) Due to the rising price of rare-earth materials, permanent-magnet (PM) machines in different applications have a trend of reducing the use of rare-earth materials. Since iron-core poles replace half of PM poles in the consequent pole (CP) rotor, the PM machine with CP rotor can be a promising candidate for less rare-earth PM machine. Additionally, the investigation of CP rotor in special electrical machines, like hybrid excitation permanent-magnet PM machine, bearingless motor, etc., has verified the application feasibility of CP rotor. Therefore, this paper focuses on design and performance of PM machines when traditional PM machine uses the CP rotor. In the CP rotor, all the PMs are of the same polarity and they are inserted into the rotor core. Since the fundamental PM flux density depends on the ratio of PM pole to iron-core pole, the combination rule between them is investigated by analytical and finite-element methods. On this basis, to comprehensively analyze and evaluate PM machine with CP rotor, four typical schemes, i.e., integerslot machines with CP rotor and surface-mounted PM (SPM) rotor, fractional-slot machines with CP rotor and SPM rotor, are designed to investigate the performance of PM machine with CP rotor, including electromagnetic performance, antidemagnetization capacity and cost. © 2017 Author (s)

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Evaluation of Magnetic Suspension Performance in a Multi-Consequent-Pole Bearingless Motor

Cited by 20 publications

References 21 publications

Elektrische Antriebe - Grundlagen

Elektrische Antriebe - Grundlagen

Inductance Characteristic Analysis of Consequent-Pole Permanent Magnet In-Wheel Motor

Investigation of a less rare-earth permanent-magnet machine with the consequent pole rotor

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