An Improved Control Scheme for Constant Power Generation Control in Photovoltaic Systems

Abstract

As the penetration rate of photovoltaic generation continues to increase, the problems such as grid overload and overvoltage are gradually emerging. Therefore, a method of limiting active power output to a specific value has emerged, called constant power generation (CPG). Conventional CPG control algorithm usually exists a large oscillation at the reference power. In this paper, an improved CPG control algorithm is proposed. The proposed method can reduce power oscillation at the reference power which leads to less power loss. The superiority of the algorithm is verified in simulation and experiment.