双谐振注入混合型有源电力滤波器特性

Characteristics of double resonance injection type hybrid active power filter

在分析双谐振注入混合型有源电力滤波器(Double Resonance Injection Hybrid Active Power Filter,DIHAPF)结构和工作原理的基础上,建立了DIHAPF的系统控制模型及包括控制器的电压型逆变器的数学模型。从无功功率静态补偿能力和谐波分压特性两方面分析了DIHAPF注入支路特性,同时研究了DIHAPF的系统稳定性和谐波补偿特性,着重探讨了并联谐振支路谐振频率对系统性能的影响,提出了注入支路谐振频率设计方法。将非线性负载等效为谐波电流源,在PSIM6.0软件平台搭建DIHAPF模型进行仿真验证,并通过6 k V实验样机进行了实验研究。仿真和实验结果证明了理论分析的正确性。

The system control model of double resonance injection hybrid active power filter （DIHAPF） and mathematical model of voltage source inverter with controller is established based on the structure and operating principle of DIHAPF. The injection branch features are analyzed including the static reactive power compensation capability and dividing capability of harmonic voltages. Stability and harmonic suppression capacity of DIHAPF is analyzed simultaneously. The influence of the parallel resonant circuit resonant frequency to system performance is discussed in detail. Furthermore, the method of designing the resonant frequency of parallel resonant circuit is proposed. The simulation model of DIHAPF is established and simulated on PSIM 6.0 taking nonlinear loads as harmonic current sources. A 6 kV DIHAPF experiment prototype controlled by TMS320F28335 is built. Simulation and experimental results prove the validity of the analysis. This work is supported by National High-tech R ＆ D Program of China （No. 2012AA050211）.