International Journal on Electrical Engineering and Informatics (IJEEI)
A Battery Energy Storage System (BESS) based Voltage and Frequency Controller (VFC), for an Autonomous aSynchronous Generator (ASG) driven by an uncontrolled pico-hydro turbine used in constant power mode, is presented in this paper. Excitation of the asynchronous generator with capacitor bank enables it to generate rated voltage at no load. The additional reactive power demand of the ASG on load and that for the load itself is provided by the VFC. The proposed controller has the capability of harmonic reduction, load balancing and load leveling along with voltage and frequency control.