A Microcontroller based Speed Controller for Permanent Magnet Brushless DC Motor

摘要

This paper presents a software controlled digital speed controller for Permanent Magnet Brushless DC motor. The scheme of the implemented drive system includes a position sensing Mechanism, speed calculation from shaft encoder, speed controller, reference current generator, Current controller, current controlled voltage source inverter and PMBL Motor. TH hardware Scheme developed consists of Hall effect current sensors used for the measurement of phase Currents, optical isolation, driver circuit and MOSFET based Inverter.