5kW Two Type Non Isolation Single Phase Photovoltaic Grid-connected Inverter Design

With the development of human civilization, more and more energy is required, and more and more problems are yielded due to traditional energy consumption. These will force all countries in the world to develop new energy to replace traditional energy. Thus, as an inexhaustible clean energy, solar energy becomes the first choice of developing new energy. The photovoltaic grid-connected inverter, as the core equipment of solar power systems, has been receiving more and more attention and has obtained rapid development.This thesis will research and design the5kW two non-isolated single-phase photovoltaic grid-connected inverter, including the selection of topology power circuit, the calculation of power circuit, the design of control circuit, the maximum power point tracking (MPPT), and the analysis of SPWM control algorithm. At the same time, this present product is tested. It is shown from the sufficient experiment data that the design objective is achieved.