Closed loop control system modeling of Permanent Magnet Brushless DC Motor

Abstract

In this paper the more precise mathematical modeling of Permanent Magnet Brushless DC Motor (PMBLDC) has been presented. This is required for accurate real time applications of PMBDLC drive. The electronic and communication system of this motor drive is a power processing unit (PPU). The technological growth of the 21st century in microelectronics and control has resulted in powerful linear integrated circuits, microcontrollers and digital signal processors. In addition, the development in semiconductor technology also made it possible to significantly handle the voltage and current capabilities and the switching speeds of semiconductor devices which are the integral part of the Power Processing Unit (PPU). The Digital Signal Processors (DSPs) are used for real-time control. This requires efficient performance of the control for which steady state and transient model of the PMBLDC motor are necessary. The developed model is simulated using Matlab/ Simulink to confer the operating behavior of the drive prior to the implementation.