基于积分调节算法的光伏电池负荷功率跟踪控制

Load Power Tracking Control of PV Cells Based on Integral Adjustment Algorithm

随着光伏发电系统和微电网的普遍应用,在微电网孤岛运行时,光伏发电功率与负荷额定功率不匹配的问题日益突出。通过研究光伏电池输出功率特性,提出一种基于积分调节算法的光伏电池负荷功率跟踪控制策略。在孤岛模式下可实现光伏发电系统输出功率在容量范围内自动跟踪微电网负荷所需额定功率,从而满足微电网孤岛运行模式下功率平衡的要求。最后通过构建的额定功率为100 kW的光伏微电网动模试验平台验证了所提控制策略的可行性。所得研究成果可为无电地区利用太阳能发电就地解决负荷供电的稳定性问题提供技术参考。

With the widespread application of photovoltaic power generation systems and microgrids,the problem of mismatch between photovoltaic generation power and load rated power is becoming increasingly prominent when operating in isolated mode.A load power tracking control strategy for photovoltaic cells based on integral adjustment algorithm was proposed by studying the output power characteristics of photovoltaic cells.In the island mode,the output power of the photovoltaic power generation system can automatically track the rated power required by the microgrid load within the capacity range,thus meeting the requirements of power balance in the island operation mode of the microgrid.Finally,the feasibility of the proposed control strategy was verified through the construction of a dynamic simulation experimental platform for a photovoltaic microgrid with a rated power of 100 kW.The research results obtained can provide technical reference for using solar power generation to solve the stability problem of load power supply in areas without electricity.