摘要
在采用串联混合有源电力滤波器(SHAPF)消除谐波的过程中,由于负载电路一般为晶闸管或不控整流电路组成,因此它们在换相过程中会因为短路而对电网电流造成冲击。为消除电网冲击电流对SHAPF的影响,提出了在整流桥逆变器侧串联一个大电感的冲击电流电感法和新型串入式SHAPF法来抑制这种电流冲击,解决了因整流桥换相时刻而导致SHAPF负载短路。仿真分析和实验结果都表明:这两种方法简单、能有效抑制电网电流冲击,提高了SHAPF系统的滤波性能、运行稳定性和可靠性。
The current-source nonlinear load is normally composed of the thyristor or diode rectifier,while the process of their short commutation will cause the source current rush for the SHAPF. In order to solve this problem,a method of the rush current inductor that a large inductor is series in between passive filters and rec- tifier,and a series-in SHAPF were proposed to suppress the source current rush. And the operation principle of the methods was analyzed and compared. The simulation and experiment results are also verified their validity.
出处
《电气传动》
北大核心
2008年第7期42-45,62,共5页
Electric Drive
