“Design of digital controller using pole placement technique for single phase PWM inverter and its implementation on FPGA”

In this paper the design of control law to calculate width of PWM pulse to generate the desire output voltage is described. Design of hardware and control law is carried out by considering 100 Watt application(load). This design is carried out with state space variable using digital control technique. Digital controller is design using pole placement technique to achieve desire transient response. Also the design of hardware required for single phase PWM inverter is described. The equation for Control law is implemented on FPGA device SPARTAN-III. The parallel processing capability of SPARTAN-III is used to reduce the total time to calculate control law. Also ADC interface circuit, pulse generating circuit are implemented on FPGA device.