摘要
Due to the trend of renewable energy, photovoltaic (PV) inverters are widely used around the world. Inverter’s efficiency significantly decreases at low input power, and microinverters spend a significant percentage of the year operating at that case. Achieving high conversion efficiency is the key to improving total efficiency. A burst mode parameter design method is proposed in this paper, which aims to improve efficiency by designing the burst mode’s upper bound voltage and switching case based on tradeoff between inverter efficiency and maximum power point tracking (MPPT) efficiency. Then, a simple MPPT strategy for burst mode is implemented. Finally, experimental tests are performed, verifying the efficiency improvements of proposed strategy. The experimental results show that the proposed strategy achieves a combined efficiency of 92.53%, which allows more solar power to be available to the users and the grid.
陈翠勤
博士研究生
陈翠勤，浙江大学能源动力专业博士。中国工业与应用数学学会委员，某世界500强零碳城市规划牵头人，历任智能微网负责人、储能研发副总裁，电化学储能技术国家工程研究中心核心骨干；福建能源器件与科学技术创新实验室核心骨干；电力储能技术及应用实验室核心成员。
