Abstract
In this paper, a single VSC (Voltage Source Converter) based standalone microgrid is proposed consisting of a brushless SRG (Synchronous Reluctance Generator) based diesel engine-generator (DG) set, sensorless and brushless variable speed wind energy conversion and a battery storage. A simplified controller is designed and developed to regulate the voltage and frequency of the microgrid by coordinating all these sources. The mechanical sensorless control of WECS (Wind Energy Conversion System) is adding to the simplicity and low cost. The proposed controller of microgrid improves the power quality apart from voltage and frequency regulation. The proposed microgrid is tested under various disturbances such as static and dynamic load switching, unbalanced loads, varying wind speeds, and changes in reference power of DG set. The controller is performing well in all these cases. With only one VSC, the cost and complexity in control are reduced in proposed microgrid.
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