Unidirectional DC/DC Converter for Microgrids

Microgrids are local small scale electricity systems that can operate independently and separated from the main electricity grid. This paper presents a novel unidirectional DC/DC converter that can be used to transfer power from distributed resources such as Solar PV or Fuel Cells into a DC microgrid. The converter is based on the LLC topology but designed to operate in a specific region of the gain curve that provides several benefits to integration of renewable energy sources into a constant DC bus. The isolated converter shows very high efficiency, full range of zero current switching, and simple control. The novel topology also has the inherent attribute of balancing the voltage on a bipolar DC bus by automatically shifting the processed power to the pole with the lower voltage. Citation: Abin Paul, Lakshmipriya K J, Rejoice Thomas Paul. "Unidirectional DC/DC Converter for Microgrids." Global Research and Development Journal For Engineering [ERTEE' 19], Adishankara Institute of Engineering and Technology, kalady, Kerala KTU(Kerala Technological University), (March 2019) : pp. 74 - 76.