Reliable Winding-Based DC-Bus Capacitor Discharge Technique Over Full-Speed Range for IPMSM Drive in Electric Vehicles Without Position Sensor

When electric vehicles encounter emergency, the dc-bus capacitor voltage in the motor drive system needs to be reduced as quickly as possible to prevent the passengers from secondary electrical injury. For the purpose of compactness and low cost, a novel discharge scheme by using the machine windings has come forth. Yet, the relevant research works are incomprehensive without considering the standstill cases and sensor fault issues. This article...