Implementation of high resolution unipolar PWM inverter using Xilinx System Generator

This paper presents an implementation technique of a high resolution Unipolar Pulse Width Modulator (UPWM) for power inverter applications. Unipolar switched inverter has the advantage of a higher efficiency and lower harmonic distortion. The technique was tested in a 2kW inverter with a typical LC filter and it was achieved a Total Harmonic Distortion below 2%. Simulations and experimental results were performed. The technique was developed with the Xilinx System Generator in MATLAB/Simulink and it was implemented on a System on Chip XC70Z020CLG484-1 Zynq device.