Abstract
This paper presents some techniques for driving novel 5 phase dual winding PMSM (Permanent Magnet Synchronous Motor) for the in-wheel motor. The motor realizes winding change over characteristics that can expand driving area from high-torque mode to high-speed mode due to the dual winding construction. However, the dual winding structure makes a high-current ripple due to high coupling between windings. The paper proposes some control methods to reduce the current ripple, including inverter career ripple. The paper also presents harmonics current injection, such as the 3rd harmonics current injection method, to reduce the torque ripple and generate higher torque.
Highlights
An integrated permanent magnet synchronous motor (PMSM) coupled with an inverter is part of a mainstream effort to develop a small traction system for electric vehicles (EVs) [1]
To realize a fault-tolerant air-cooled in-wheel motor (IWM), this study proposes a 5-phase dual winding PMSM driven by ultra-small SiC modules
This paper presented characteristics of the dual winding 5-phase PMSM for in-wheel motor, and evaluated unique control methods for the proposed dual winding 5-phase machine
Summary
An integrated permanent magnet synchronous motor (PMSM) coupled with an inverter is part of a mainstream effort to develop a small traction system for electric vehicles (EVs) [1]. With the use of wide-band gap devices for the integrated IWM, an air-cooling system can be realized, making the IWM system more achievable by introducing a fault-tolerant motor system. This will make EVs a more attractive prospect in the automobile industry, contributing to the reduction in CO2 from gasoline-powered cars. In this system, the inverter was made into a machine and electric structure integrated into the motor, and the high-power electrical wiring to the wheel was made to be DC wiring only It was designed with the aim of natural air cooling by running wind in addition to the water cooling hose [8]. Natural air cooling is FFiiguurree2.2D. eDvelvoepleodpueltdrau-slmtraall-SsimC ahlallfS-birCidhgeailnf-vberrtiedrgmeodinuvlee. r1t2e0r0 mV-1o5d0uAlera.t1ed20a0ndVth-1e5m0oAdurleawteads caonndfirmtheed mto oduwloerkwuansdecro2n5f0irdmegeredesttoemwpoerraktuurencdonedri2tio5n0s.degrees temperature conditions
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