FPGA-Based Speed Control of Synchronous Machine using a P-PI Controller

In this paper, a P-PI speed controller for synchronous machine is developed. It is made up of both an internal and external speed control feedback loop. The internal one allows modifying the poles placement of the controlled system at the desired locations and the external one allows imposing the shape and the dynamic of the speed response. In order to ensure an efficient speed control operation, an accurate speed estimator that estimates the rotation speed from the mechanical rotor position provided via an absolute encoder is also developed. Experimental results carried on a prototyping platform are given to illustrate the efficiency of the developed synchronous machine speed controller.