A Novel High Gain Boost Converter for Interfacing Low Voltage PV in a DC Microgird

Abstract

Low terminal voltage at the output of a solar photovoltaic needs efficient boost converters for establishing a proper communication and energy transfer to the DC microgrids. In order to serve this purpose, the traditional boost converter is required to operate at some large duty ratio which is perilous to the converter performance and would create undesirable effects such as more losses, spikes of voltages and poor transient response. A boost converter with significantly high gain at low duty ratio has been presented in this paper. The proposed converter is well suited for integration of a solar PV with the DC bus of higher voltage levels in a DC microgrid. This particular converter is simple in structure and easily controlled with a single train of pulses. The advantages of switched inductor circuit embedded with the capacitor is availed in an intelligent way to uplift the voltage gain significantly. The converter behavior and suitability for high voltage is analyzed in continuous conduction mode, and later, the performances are verified through simulation results at a frequency of 10 kHz.