提出了并联型单相有源电力滤波器的系统结构和谐波检测方法。着重讨论了主电路及信号检测电路的组成与参数整定,满足了DSP及其控制算法对电路结构及信号的要求,采取了相应的保护和抗干扰措施。实验结果表明,该装置能实现对谐波的实时动态补偿,具有良好的补偿特性。 The system structure and harmonic detection method of parallel single-phase active power filter are proposed. The composition and parameter tuning of the main circuit and the signal detection circuit are mainly discussed. The requirements of the DSP and its control algorithm for the circuit structure and signal are satisfied. Corresponding protection and anti-interference measures are taken. Experimental results show that the device can achieve real-time dynamic harmonic compensation, with good compensation characteristics.