Operation of sine-wave voltage source inverter in hybrid genset based autonomous power system

Nowadays local autonomous micro-grid supply systems are mainly based on generating set (genset), where wound-field synchronous generator driven by diesel engine feeds power to distributed loads. Such systems often operate in remote locations where genset fuel supply is limited and costly. Commercial availability of renewable energy sources with power converters make them attractive to integrate with genset to improve its efficiency but introduce interesting challenge how to operate those different energy sources. A hybrid power system consisting genset and supplementary power source coupled to autonomous AC micro-grid through DC-AC inverter has been developed and researched. The paper focuses on DC-AC inverter control development and presents achieved system performance test results validated experimentally in laboratory environment.