单独注入式有源电力滤波器的研究与应用

Novel Active Power Filter with Single Injection Circuit and Its Applications

针对已有滤波器对大型冶炼企业谐波治理效果不理想的情况,提出一种新颖的有源电力滤波器(APF)——单独注入式APF。该滤波器把串联谐振注入型APF和并联混合型APF结合在一起,在有效滤除谐波的同时还可提供一定容量的基波无功功率补偿。实践表明,所提出的单独注入式APF不仅具有较大容量的无功补偿能力,且APF逆变器容量较小,因而工程应用价值较高。

According to the fact that the existing active power filters could not obtain the desirable harmonic elimination effects in large smelteries, a novel hybrid active power filter （APF） with single injection circuit is proposed by combining the series resonant injected APF and shunt hybrid APF together, which can provide a certain capacity of fundamental reactive power compensation while eliminating the harmonics effectively. Its superiority is proved in practical applications where its reactive power compensation ability is larger while its inverter capacity small. So it has a high engineering application value.