Microprocessor-based power control of active power factor correction chip and grid inverter

The present invention relates to an active power factor correction based on micro-power APFC chip control grid inverter, which is an analog inverter control, the inverter circuit configuration using two analog APFC chip, the first stage is a high frequency sinusoidal BUCK double half-wave modulation circuit, the low frequency stage full-bridge inverter circuit, and a control grid current in the previous stage, the stage circuit implemented with frequency inverter and synchronous networks. The present invention can be used as a photovoltaic power generation system and the grid inverter, with ease of development, low cost, high performance characteristics, particularly suitable for the micro-grid-connected photovoltaic power inverter.