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This paper analyzes and compares the performances of permanent-magnet-assisted synchronous reluctance machines (PMa-SynRMs) and interior permanent magnet synchronous machine (IPMSM) on their constant power speed range (CPSR) capability for electric vehicle (EV) applications. The recent trend of less rare-earth magnet makes the IPMSM unfavorable despite its excellent CPSR. As an alternative, the PMa-SynRM...
This paper provides a solution for design of permanent magnet (PM) assisted synchronous reluctance machine (PMa-SynRM). Unlike interior PM machines, the PMa-SynRM is substantially a SynRM with a dominant reluctance torque. PMa-SynRMs are often designed by direct embedding magnets in a SynRM rotor to improve the performance over the original SynRM. However, the PM arrangements being more effective...
This work investigates the impact of thin electrical steel laminations on the performance of interior permanent magnet (IPM) motors for electric vehicle traction. Three different electrical steel grades are used in an IPM motor design and the performance is evaluated by simulation. It is found that thin laminations can improve the efficiency of the IPM motor but the output torque could be slightly...
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