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为提高光伏并网电能质量，基于光伏并网发电系统逆变主电路和并联型APF在拓扑结构、运行方式和控制方法上具有诸多相同点，提出一种将有源滤波和无功功率补偿与光伏并网发电相结合的新型控制方案。该方案利用 FBD 电流检测法，无需复杂的Park变换和d-q变换，即可实现瞬时谐波和无功电流的检测。结合中点箝位式（NPC）三电平准 PR 控制策略，即可完成对交变电流信号在静止坐标系下的无静差跟踪控制，在简化控制算法的同时大大减小了并网电流的谐波含量，且增强了系统的鲁棒性。仿真及实验结果表明，所提控制策略可有效地实现光伏并网发电和有源滤波及无功功率补偿的统一控制。“,”The inverter circuit of grid-connected PV system and the parallel APF have many similarities in topological structure, operation mode and control method, based on this, a new kind of control method which can combine the reactive compensation and active filter with grid-connected PV power generation is put forward. Using FBD current detection method, the instantaneous reactive and harmonic current detection can be realized without complex Park transform ord-qtransform. Combining with the neutral point clamped (NPC) three-level quasi-PR control strategy, static error free tracking control of the alternating current signal in static coordinates can be realized. The control algorithm has been greatly simplified while the harmonic of grid current has been effectively reduced, at the same time, the robustness of the system has been enhanced. The simulation and experimental results show that the proposed control strategy can effectively suppress harmonics as well as achieve the compensation control of grid-connected PV generation and reactive compensation.