PROPULSION SYSTEM CONTROL FOR NEXT GENERATION OF EV1

摘要

The paper describes a new induction machine control algorithm for the General Motors EV1 electric vehicle. The new controller is a fully digital rotor field oriented controller, and incorporates a space vector modulation algorithm optimized for reduction of switching losses. The new solution is compared to the one used currently, and notable inverter efficiency improvements are observed, allowing for significant silicon reduction in the voltage source inverter (VSI). The control algorithm provides for maximal efficiency control at low torque levels, and maximal torque per ampere control at high torque levels.