An high-speed low-noise rotor topology for EV/HEV PMSM

Abstract

Permanent magnet synchronous motor (PMSM) for EV/HEV pursues higher efficiency, higher power density, higher rotation speed and better NVH performance. To meet these requirements, an improved triangle rotor topology is presented. The new rotor topology is researched through comparing the performance with V shape rotor and traditional triangle shape rotor. The comparing results on air-gap flux density, key order radial forces, sound pressure, inductance, torque, antidemagnetization capability and efficiency proved the advantage of the new rotor topology.

A study on PMSM drive systems fed by multi-level inverter using linear quadratic regulator control for electric vehicle applications

“…This feature makes this motor capable of generating very high torque, especially suitable for electric vehicles [9]. On the other hand, the IPM motor has a strong armature response, leading to a substantial flux reduction, allowing the speed control area to be raised above the rated speed [10]- [12]. Electric drive systems are implemented with control structures such as scalar control (𝑢/𝑓), direct torque control (DTC), and rotor flux-like (FOC) [13].…”