High resolution 6 channels pulse width modulator for FPGA-based AC motor control

This paper presents a 6 channels pulse width modulator with high resolution. The modulator is designed for three phase AC drives control. It is targeted for low cost FPGA implementation, and uses the special clock management units present in the FPGA. The modulator is verified first by measurements on one channel. Then it is used for open loop starting of a three phase induction motor, thus verifying the correct operation as a whole.