Overview of advanced control strategies for electric machines

Control strategies play a key role for operation of electric machines, which would directly affect the whole system performance. In fact, different control strategies have been executed and explored for electric machines, which bring great impacts to industrial development and human society. This paper investigates and discusses the advantages control strategies for electric machines, including the field oriented control (FOC), direct torque control (DTC), finite control set model predictive control (FCS-MPC), sensorless control, and fault tolerant control (FTC). The corresponding control principles, control targets, fundamental approaches, advanced approaches, methodologies, merits and shortcomings are revealed and analyzed in detail.