A Fuzzy Predictive PID Control Scheme for the Excitation System of Synchronous Generator

School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P R China

^a Corresponding Author: jz.zhou@hust.edu.cn

Abstract

With the rapid development of the process control theories in the electrical engineering, new control strategies which lead to better performances are urgently demanded for the excitation control of synchronous generators. For the sake of improving the convergence rate of the terminal voltage and covering the weakness in the adaptability of operational conditions of conventional controls in disturbances, a fuzzy predictive PID excitation control method is proposed in this paper. This control scheme can be divided into three steps in every sample interval: PID parameter adaptation, rolling state prediction and real-time control movement integration. Numerical simulations have been conducted under different operational conditions with the proposed method as well as the conventional ones, respectively. Experimental comparisons indicate the superiority in voltage regulation performance of the proposed method.