摘要
由于非线性负载的广泛使用,电力系统中的谐波和功率因数降低的问题日益严重,针对上述问题,设计了一种基于自适应离散滑模控制方式的有源电力滤波器(active power filter,APF),用以抑制谐波和提高功率因数。在APF数学模型的基础上,对谐波信号即控制信号进行自适应离散滑模变结构分析来控制开关的通断。仿真波形表明,与应用滞环控制方法的APF系统比较,自适应控制算法的跟踪效果更好,得到的电网波形更接近正弦波。最后给出了APF样机调试结果的波形,有效验证了该算法的正确性。
As the problem of harmonics and low power factor caused by widely-used nonlinear load is get- ting worse, an active power filter based on adaptive discrete sliding mode control method was designed to sup- press the harmonics and improve power factor. Based on the mathematic model of APF, it analyzed the har- monic current that is control signal to control the switch-off using the adaptive discrete sliding mode control method. The simulation waveforms expressed that with the hysteresis control, the adaptive discrete sliding mode control has better tracking performance, and the power wave is closer to the sine wave. Finally, the de- bugging waveforms of the APF prototype effectively verify the correctness of the algorithm.
出处
《电气传动》
北大核心
2012年第8期20-23,共4页
Electric Drive
基金
辽宁省创新团队基金项目(2008T079)
关键词
有源电力滤波器
自适应离散滑模控制
滞环控制
数学模型
active power filter（APF）
adaptive discrete sliding mode control
hysteresis control
math- ematic model
