Design and flux-weakening control of an interior permanent magnet synchronous motor for electric vehicles


Permanent magnet synchronous motors (PMSMs) provide a competitive technology for EV traction drives owing to their high power density and high efficiency. In this paper, three types of interior PMSMs with different PM arrangements are modeled by the finite element method (FEM). For a given amount of permanent magnet materials, the V shape interior PMSM is found better than the U-shape and the conventional rotor topologies for EV traction drives. Then the V shape interior PMSM is further analyzed with the effects of stator slot opening and the permanent magnet pole chamfering on cogging torque and output torque performance. A vector-controlled flux-weakening method is developed and simulated in matlab to expand the motor speed range for EV drive system. The results show good dynamic and steady-state performance with a capability of expanding speed up to 4 times of the rated. A prototype of the V shape interior PMSM is also manufactured and tested to validate the numerical models built by the finite element method.

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Divisions: College of Engineering & Physical Sciences
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Uncontrolled Keywords: electrical vehicles,finite element method,permanent magnet synchronous motors,torque ripple,flux weakening,Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Electrical and Electronic Engineering
Full Text Link: http://ieeexplo ... rnumber=7524020
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-10-01
Published Online Date: 2016-07-11
Accepted Date: 2016-07-11
Authors: Zhang, Yue
Cao, Wenping (ORCID Profile 0000-0002-8133-3020)
McLoone, Seán
Morrow, John



Version: Accepted Version

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