Anti-Windup PI Controller with Tracking for BLDC Motor Drive System: Modeling, Simulation and Implementation on Lab View Based FPGA

Abstract

Most of the Brushless DC (BLDC) motors drives take up proportional integral (PI) controller and pulse width modulation (PWM) scheme for speed control. BLDC motor drive has strong saturation characteristics and saturation results in a windup phenomenon. This paper presents an Anti-windup drive for BLDC motor. An Anti-windup controller (AWC) with tracking has been employed and which has been modeled in MATLAB / Simulink and comparison has been done between conventional PI controller and AWC with tracking at different starting loads. In this paper, dynamic characteristics of the BLDC motor drive have been examined and results are validated with FPGA (Field Programmable Gate Array) based experimental set up.