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提出一种并联混合型四开关有源电力滤波器拓扑结构(four-switch injection type hybrid APF,FSIHAPF),该结构能够避免传统注入式混合型有源电力滤波器无功过补偿,装置可靠性较差,整体成本较高以及功耗较大等缺点。详细分析了FSIHAPF中四开关逆变器工作原理和FSIHAPF装置的滤波原理,提出了一种FSIHAPF装置的控制方法,通过仿真分析,验证了该控制方法的有效性。针对某大型机械厂10 kV中频炉设备的电能质量实际情况,详细设计了FSIHAPF装置的具体参数并研制了工程样机,样机试验结果表明,FSIHAPF装置能够很好地实现高压系统动态谐波治理功能。
A four-switch four-switch active power filter topology (FSIHAPF) is proposed in this paper, which can avoid the reactive compensation of traditional injection hybrid active power filter Poor, the overall cost is higher and the power consumption and other shortcomings. The working principle of FSIHAPF four-switch inverter and the filtering principle of FSIHAPF device are analyzed in detail. A control method of FSIHAPF device is proposed. The simulation results show that the proposed control method is effective. According to the actual situation of power quality of a 10 kV IF furnace in a large machinery plant, the specific parameters of the FSIHAPF device were designed and the engineering prototype was developed. The prototype test results show that the FSIHAPF device can well realize the dynamic harmonic control of high voltage system.