Research of photovoltaic inverter based on UC3854

Abstract

A research of photovoltaic inverter based on UC3854 is proposed in this paper. UC3854 is a type of dedicated chip applied in control of active power factor correction. This paper uses voltage and current amplifiers of UC3854 to realize the double closed-loop control. Both the main circuit and the drive circuit are designed to be modular. All these improve the stability and anti-jamming ability of the system. Some new devices, such as ICL8038 and 34063 are used in this inverter. Based on them, the sinusoidal signal output, as well as the power design in the system, becomes quite easy and simple. With a simple structure, the inverter is convenient to operate. In addition, the prototype based on UC3854 is developed in this paper. It can supply power for the local load and make economic and social benefits.