A 2DOF PID for Dynamic Control of Drive System Switched Reluctance Motor

Abstract

Traditional Proportional, Integral and Derivative controllers (PID) have been largely employed for the control of industrial variable speed drives due to easy design and good performance they provide. Switched Reluctance Machines (SRM) due to its inherent characteristics are naturally tolerant to phase faults despite performance loss. However, in some cases, such as electric vehicles and power generation, a non-interrupt operation is mandatory or at least required, even under faulty scenarios. Most of the techniques used to improve the performance of SRMs in fault situations are related to the switching feed converter. This paper proposes a control approach based an a 2DOF PID controller which significantly reduces the phase faults effects on the speed of the motor. Furthermore, the high-frequency noise is attenuated when compared to the classical PID controller commonly applied to control such sort of motors. The proposed controller is able to recover the speed of operation faster than a classical approach when a feedforward action is taken into account.