Dynamically Reconfigurable PWM Controller for Three-Phase Voltage-Source Inverters

This paper presents the design and development of dynamic partially reconfigurable pulsewidth modulation (DPRPWM) controller for three-phase voltage-source inverters (VSI) in a single Xilinx Spartan 3 XCS400PQ208 field programmable gate array (FPGA). The DPRPWM controller is designed such that it switches between the popular PWM techniques like sinusoidal PWM (SPWM) and space vector PWM (SVPWM). The FPGA platform supports the run-time reconfiguration of control functions and algorithms directly in hardware and meets hard real-time performance criteria in terms of timings for PWM generation as well as reconfiguration. The DPRPWM control is simulated and experimentally verified using a low-cost Xilinx Spartan FPGA. The results of SPWM and SVPWM controller are presented and the results prove that the DPRPWM controller for three-phase inverter is highly possible and can be extended to any level/phase PWM controllers.