【摘要】 本文针对单级式交错并联反激微型光伏逆变器，提出一种能够直接向电网提供无功功率的控制策略。该策略通过实时调整输出电流的参考信号波形，精确控制实际并网电流，使其与电网电压之间产生预设的相位偏移，从而实现无功功率的灵活调控，根据电网电压的动态变化，自适应地生成与之匹配的最优参考电流波形，形成适应性的无功补偿机制，提高无功功率控制策略的性能。仿真分析与实验测试结果表明，所提控制策略在关键性能指标优于传统控制方法，不仅拓宽了功率因数的可调节范围，还有效降低输出电流的总谐波失真率，且结构简单、高效、可靠，具有实用性。更多还原

【Abstract】 This paper proposes a control strategy for single-ended interleaved parallel flyback micro photovoltaic inverters that can directly provide reactive power to the grid. The strategy precisely controls the actual grid-connected current by real-time adjustment of the reference signal waveform of the output current, creating a preset phase shift between it and the grid voltage, thereby enabling flexible regulation of reactive power. Furthermore, it adaptively generates the optimal reference current waveform that matches the dynamic changes of the grid voltage, forming an adaptive reactive power compensation mechanism and enhancing the performance of the reactive power control strategy. Simulation analysis and experimental test results show that the proposed control strategy outperforms traditional control methods in key performance indicators. It not only broadens the adjustable range of the power factor but also effectively reduces the total harmonic distortion of the output current, while being simple in structure, efficient, reliable, and practical.更多还原