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提出了一种新型双谐振注入式混合有源电力滤波器(DIHAPF),注入支路由基波串联谐振支路和并联谐振支路组成,在保证补偿谐波电流注入能力的同时,避免了单谐振注入式混合有源电力滤波器(SIHAPF)高压配电网应用时容易无功过补的问题;建立了适用于高压配电网的注入式混合有源电力滤波器(IHAPF)的通用电气模型,给出了注入支路参数设计依据;此外,提出了一种适用于DIHAPF的基于广义积分预处理的比例积分(PI)控制方法,通过对负荷侧电流进行广义积分预处理获得电压参考信号,对有源部分交流侧输出电压进行闭环控制。实验及仿真结果证明了所提出的新型双谐振注入支路有效提高了IHAPF的应用电压等级,该控制方法在保证谐波电流控制精度与动态响应速度的同时,大大简化了控制计算过程,易于工程实现。
A new type of dual-resonant injection active power filter (DIHAPF) is proposed. The injection branch consists of a series resonant branch and a parallel resonant branch, which can compensate for the harmonic current injection capability and avoid the single resonance The problem of easy reactive over-compensation in the application of SIHAPF high-voltage distribution network is established. A general electrical model of injection hybrid active power filter (IHAPF) for high-voltage distribution network is established, In addition, a proportional integral (PI) control method based on generalized integral preconditioning is proposed, which is suitable for DIHAPF. The voltage reference signal is obtained by generalized integral preconditioning on load side current, Active part of the AC side of the output voltage for closed-loop control. The experimental and simulation results show that the new dual-resonant injection branch effectively improves the application voltage level of IHAPF. This control method greatly simplifies the control calculation process while ensuring the harmonic current control accuracy and dynamic response speed, achieve.