DSP-based coordination control for controllable AC-to-DC converter and switched capacitors of stand-alone self-excited induction generators

A novel control scheme based on a digital signal processor (DSP) to coordinate an AC-to-DC converter and switched capacitors is performed for isolated self-excited induction generators (SEIG). A laboratory 2.2 RW (3 hp) induction machine driven by a brushless DC motor is employed as the studied SEIG. Three-phase system model is employed to establish a set of complete system dynamic equations for simulating the performance of the studied system. The simulated results are compared with the measured outcomes to validate the proposed model. It can be concluded from the simulated and measured results that the proposed coordination control scheme can effectively maintain an adequate DC-link voltage profile at the output terminals of the AC-to-DC converter under various loading conditions