Robust Control Based on Generalized Predictive Control Applied to Switched Reluctance Motor Current Loop

Abstract

This paper proposes a robust control based on generalized predictive control (GPC) applied to the current control loop for a switched reluctance motor (SRM) drive. The proposed controller has two degrees of freedom where the setpoint tracking is decoupled from the load disturbance rejection at the nominal case. In addition a filter design is proposed in order to achieve good relationship among robustness, load disturbance rejection, and noise attenuation. Simulation and real experimental results are shown to illustrate the controller performance.

The T-polynomial approach for LQG control applied to a Switched Reluctance Motor (SRM)

“…The GPCBC controller's robustness is formulated with basis on the Tpolynomial, which makes it suitable for comparative results with LQG-T. The GPCBC algorithm results in a RST structure whose polynomials are given by [5]:…”

“…For low speed condition, current set-point tracking is mandatory for a proper speed and/or torque control [5]. However, at high speed operation, current control is constrained because driving circuit phases are switched on during a time window smaller than that of the rising time.…”

“…Many of these algorithms apply Optimized Search Algorithms, Fuzzy logic and Neural Networks [7,8,9]. However, predictive and robust controllers have more recently justified their application for this type of problem [5,10], as them allow an analytical solution for disturbance rejection, transient response.…”

“…Within this context, this paper presents studies based on predictive and optimal control perspectives for speed control loop of a SRM. Under predictive control framework a control technique, based on the Generalized Predictive Control (GPC), named GPCBC [5], has been recently and successfully applied for the SRM's current loop. Such algorithm is extended herein for the speed control loop.…”

Controlador De Corrente Preditivo Contínuo Com Anti-Windup Aplicado A Um Sistema De Geração Eólico Baseado Em DFIG

“…Considerando-se uma estrutura de controle RST clássica [23], apresentada na Figura 2, pode-se obter os valores de (25)- (27), com base na lei de controle do GPC, definida em (24).…”