Reconfigurable PWM Generator Hardware for Power Converter Applications

Application of digital hardware based on FPGA in power converters controller systems has grew up in recent years. One of the most important issues in power converters especially in DC to AC types is PWM generation. This paper presents a multi-function reconfigurable PWM generator hardware that can be used in power converters control systems. The proposed hardware can be implemented both on FPGA or ASIC as a peripheral for main processor. This architecture supports several PWM modes such as phase shifted carrier and level shifted carrier as well as single phase or three-phase SPWM. The proposed hardware includes output control and programmable dead-band generator module as well. The system function selection and other configurations can be carried out using dedicated control and configuration registers. Whole architecture and internal modules are designed and implemented in Verilog HDL and synthesized and tested on Altera Cyclone II FPGA.

Keywords:

PWM , FPGA , Multi-Carrier PWM , Reconfigurable , Verilog HDL Digital Hardware