A brushless generation system for microgrid operation utilizing dual stator induction generator

Modern micro-grid needs to integrate all possible and economically attractive renewable energy resources. In many cases these generations are not smooth in nature and are situated in remote locations where regular maintenance is difficult. This paper proposes a brushless generation system using a dual stator winding induction generator (DSWIG). The power winding of the DSWIG is connected to the grid by rectifier-inverter system, whereas, the excitation winding is fed from an inverter. The generator is controlled in a way to enable terminal voltage regulation of the main winding by controlling the rotor flux through the excitation winding. Preliminary results show the capability of the system to regulate voltage and maintain constant frequency at the micro-grid. Simulations results show usefulness of such systems for micro-grid operation.