Integrated solid state controller for small hydro generation using isolated asynchronous generator

This paper deals with an integrated solid state controller (ISSC) for an isolated asynchronous generator (IAG) used in small hydro power generation for feeding three-phase four-wire loads. The proposed ISSC is used to control the voltage and frequency of IAG. This ISSC is realized using a three-leg insulated gate bipolar transistors (IGBTs) based current controlled voltage source converter (CC-VSC), a star-hexagon transformer, a capacitor, a chopper switch and an auxiliary load on its dc bus. The proposed ISSC for an isolated generating system is modeled and simulated in MATLAB along with Simulink and simpower system (SPS) blockset toolboxes. The simulated results of IAG-ISSC system are presented to demonstrate its performance for feeding three-phase four-wire loads with the neutral current compensation.