Power generation in isolated and regional communities: application of a doubly-fed induction generator based wind turbine

The application of a doubly fed induction generator (DFIG) as a suitable generating scheme in a remote or isolated communities is presented in this paper. Remote area power supply (RAPS) system, a dummy load and its controller with energy storage system (ESS) are identified as the key components. The dummy load is used to absorb the power associated with over generation. The battery storage system is used as a storage buffer which could absorb or release the power into the RAPS system when required. It is also used as a secondary control for the DC link voltage of the back-back converter of the DFIG. The hybrid operation of the DFIG, dummy load, ESS and main load is discussed in relation to the system voltage,frequency and DC link stability. The entire hybrid model has been developed using the SimPowerSystem tool box in MATLAB.