Development of variable magnetic flux motor suitable for electric vehicle

Zhou, Genfu; Miyazaki, Tami; Kawamata, S.; Kaneko, Daigo; Hino, N.

doi:10.1109/ipec.2010.5542352

Cited by 36 publications

(14 citation statements)

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“…9. In [38] (Fig. 9(a)), a machine type is introduced based on a standard surface mounted PM machine but with the rotor split axially and mounted on a screw thread shaft.…”

Section: Other Machines With Rotor Displacementmentioning

confidence: 99%

Review of Variable-flux Permanent Magnet Machines

Owen¹,

Zhu²,

Wang³

et al. 2012

Journal of international Conference on Electrical Machines and

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“…9. In [38] (Fig. 9(a)), a machine type is introduced based on a standard surface mounted PM machine but with the rotor split axially and mounted on a screw thread shaft.…”

Section: Other Machines With Rotor Displacementmentioning

confidence: 99%

Review of Variable-flux Permanent Magnet Machines

Owen¹,

Zhu²,

Wang³

et al. 2012

Journal of international Conference on Electrical Machines and

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“…In [11], a rotor can be extruded in the axial direction according to the rotation speed to control the aligned length between the stator and rotor, and the air‐gap flux can be adjusted effectively. In addition, the rotor‐twistable PM machines are presented in [12, 13]. The rotors are split into two or three axial parts, whose PM flux can be adjusted by controlling the relative position of N and S poles.…”

Section: Introductionmentioning

confidence: 99%

Modelling and analysis of a novel mechanical‐variable‐flux IPM machine with rotatable magnetic poles

Liu

Sun

Zou

et al. 2020

IET Electric Power Applications

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In this study, a novel mechanical‐variable‐flux interior permanent magnet motor (MVF‐IPMM) is presented, which employs rotatable magnetic poles and a mechanical flux‐adjusting device placed on both sides of the rotor. The device can regulate the magnetic circuit by rotating magnetic poles and adjusting the angle of the magnetisation direction relative to the d ‐axis. Consequently, the flux‐weakening capability is enhanced. The configuration and additional mechanical devices of the MVF‐IPMM are introduced, respectively. Then, the operation principle and flux‐adjusting mechanism are deeply investigated by using analytical models, whose parameters are computed by automatic dynamic analysis of mechanical system and finite‐element analysis. Based on the simulation results, an electromechanical model is established to predict the performance of the motor. In addition, the electromagnetic characteristics of the mechanical‐variable‐flux‐ and conventional interior permanent magnet machines are compared. Finally, the effectiveness of the design is successfully proven by experimenting with a prototype.

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“…These machines can operate with reduced  pm at high speed, which reduces the requirement for flux weakening current [1][2][3][4][5][6][7]. [8] showed a 30% reduction in losses over an urban driving cyele by using different levels of  pm .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Magnetizing Trajectories for Variable Flux PM Synchronous Machines Considering Voltage, High-Speed Capability, Torque Ripple, and Time Duration

Gagas

Sasaki

Fukushige

et al. 2016

IEEE Trans. on Ind. Applicat.

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This paper discusses various transient trajectories for increasing the magnetization state (MS) of variable flux permanent magnet synchronous machines (VF-PMSMs), a class of PMSM where the magnets are demagnetized and remagnetized using the drive inverter during drive cycle operation. To manipulate MS, a magnetizing current pulse can be used, which may drive a large amount of flux linkage in the machine. As a result, above low speed operation, a large voltage may be required from the inverter. This paper extends several existing methods for improved voltage properties, and proposes and experimentally evaluates a new method  a straight line stationary frame flux linkage trajectory (SL s T)  for higher speed capability. The presented trajectories, along with existing trajectories, are organized into families and compared regarding their required voltage, high speed capability, torque ripple, and time duration.

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Development of variable magnetic flux motor suitable for electric vehicle

Cited by 36 publications

References 0 publications

Review of Variable-flux Permanent Magnet Machines

Review of Variable-flux Permanent Magnet Machines

Modelling and analysis of a novel mechanical‐variable‐flux IPM machine with rotatable magnetic poles

Analysis of Magnetizing Trajectories for Variable Flux PM Synchronous Machines Considering Voltage, High-Speed Capability, Torque Ripple, and Time Duration

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