2022 Volume 30 Issue 2 Pages 94-103
Currently, permanent magnet synchronous motors (PMSMs) are commonly used for EV traction motors. However, there are some problems in the cost of permanent magnets, high speed rotation, and the stable supply of rare earth resources. On the other hand, switched reluctance motors (SRMs) have simple, robust and inexpensive structure. However, SRMs have problems such as a large torque ripple, noise and vibration. In addition, SRMs are driven by a 3-phase asymmetric inverter, and the inverter cost is higher than a 3-phase inverter. Therefore, in order to solve these problems, we have proposed a 12/10 SRM that uses a hex connection and an improved 9-switch inverter. In this paper, a 12/10 SRM with hex connection for EV traction motors is designed and compared with induction machines (IMs). Finally, the difference between the SRM and IM is discussed.
