Hybrid Digital Control for Three Phase Rectifier- Inverter System

A DSP based digital control platform for a rectifier-inverter system built in the laboratory is presented and described in this paper. The digital platform offers the opportunity to test different control algorithms, of which the discrete PI control, a state feedback based dead beat control algorithm and digital hysteresis controllers have been the focus. An optimum digital control algorithm needs to be selected which can fully utilize the advantages of the digital platform. Stability analyses of the digital controllers and implementation issues have been highlighted