Design and Control of a BLDC Motor drive using Hybrid Modeling Technique and FPGA based Hysteresis Current Controller

Abstract

This paper shall illustrate on the design and development of a BLDC motor drive using Hybrid Analytical- Numerical based modeling methods. The proposed hybrid methodology shall adopt both, Electrical Equivalent Circuit (EEC) and Numerical Method (NM) based techniques for having better accuracy with less computational time. The developed BLDC motor is operated using a Field Programmable Gate Array (FPGA) based control drive adopting Hysteresis Current Control (HCC) technique. The FPGA based PI speed controller sense the speed of the motor through Hall Effect sensors of the BLDC motor and generate reference current for the HCC. The generated reference current and the hysteresis controller response results in switching pulses for the 120-degree Voltage Source Inverter (VSI) of a motor drive. The FPGA based PI speed controller is designed effectively to withstand the changes in speed during the dynamic conditions of the motor. Therefore, the proposed controller can be used in industries to withstand the fault conditions in the drive and maintain the steady speed response of a motor under operation. The experimental investigation of a BLDC motor drive operated with the FPGA based algorithm developed on Xilinx ISE tool, is carried out for validating the outcomes obtained.