High-frequency DC-DC boost converter for residential PV system with power factor correction

This paper presents a low capacity photovoltaic system suitable for residential purpose. The roof mounted PV modules of 5-10 Kw rating may be very useful for domestic needs, where the parallel arrangement of PV arrays at low voltage is preferred due to safety reasons. However, for grid interconnection of these low voltage PV systems, the boost converters with high gain are required. For this purpose, a DC-DC boost converter with high frequency transformer is presented which is able to boost the voltage ranging in between 20-30V to a level of 600V DC suitable for inverter operation connected to 400V, 3-phase A.C. supply. Further, the grid interfacing inverter is also utilized to compensate the harmonics and reactive power of a typical domestic load. The proposed system is developed and simulated using SimPowerSystem toolbox of MATLAB.