Matrix Converter Based Four Quadrant Operation of Three Phase BLDC Motor Using Digital Control Strategy

Brushless DC (BLDC) motor drives are becoming more popular in industrial applications. Four quadrants method is use to control the BLDC motor in all the four quadrants. This paper deals with the novel matrix converter based drive techniques for digital control of three phase BLDC motor. Hall Effect sensor sense the signals obtained from rotating position of BLDC motor and send it to the microcontroller. Microcontroller provides the signals to the appropriate switching devices, which have to be turn on and off in accordance with switching algorithm table. If the proposed method is implemented in low power motors, like motors used in sewing/embroidery machines, arcing will be very less which is not even visible. The need of the proposed work is to make simple hardware circuit which is more reliable, more efficient, less noisy, excellent speed control and smooth transition between the quadrants.