注入式混合有源电力滤波器的复合控制

电网谐波电压对注入式混合有源电力滤波器的补偿性能以及安全性有很大的影响，但是目前对这方面的研究很少。该文在分析采用不同控制策略时注入式混合有源电力滤波器工作性能的基础上，并根据实际工程遇到的问题，提出一种基于检测负载电流、电网电流和接入点谐波电压的复合控制方案。其中电网谐波治理主要靠检测负载电流来完成，而检测电网电流主要用来提高治理精度， 检测接入点谐波电压用来消除电网谐波电压对装置的安全性造成的影响。仿真和实验结果表明采用这种复合控制的注入式混合有源电力滤波器即使在电网电压畸变时仍能安全稳定运行，并取得很好的滤波效果，从而达到实用化的目的。

Study on Complex Control of Injection Type Hybrid Active Power Filter

The harmonic voltage becomes more and more serious, and it influences the effect of the hybrid active power filter (HAPF). Moreover, it threatens the safety of HAPF. But few papers focused on it. Firstly, this paper carries on an investigation into the operating performance of HAPF when different control strategies are adopted. Then the influence of harmonic voltage is discussed in detail. A novel control method is proposed, which is based on the detection of the load current, supply current and the harmonic voltage of the point where the HAPF parallels to. In this control method, the detection of the load current is used to implement the product of harmonic components, and the detection of supply current is used to improve the compensating performance, while the influence of harmonic voltage is avoided by detecting the harmonic voltage of PCC. Simulation and application results show that HAPF can meet a good performance of harmonic compensation and guarantee the security operation of the whole system.