Design of CPLD-based PWM pulse generator for STATCOM

The design of a CPLD(Complex Programmable Logic Device)-based PWM(Pulse Width Modulation)pulse generator for STATCOM(Static Synchronous Compensator)is presented.After the reception of PWM pattern parameters from a DSP(Digital Signal Processor)processor through its I /O port,CPLD periodically issues the trigger signal for generating the PWM pulse.After the initiation of CPLD,it may work independently without DSP intervention.The experimental results show that the CPLD-based PWM pulse generator is accurate and reliable with an excellent ability of non-symmetry control and online configuration.