摘要
带LCL输出滤波的有源电力滤波器起动时,由于系统非线性关系容易出现电流冲击和电压过冲。本文提出了一种在APF网侧电感串入电阻的平稳可靠的电压泵升软起动方法,该电阻在起到限流作用的同时,也改善了系统的控制特性,实现了无冲击下平稳地泵升。文中分析了串入电阻之后的系统模型和控制特性,并进行了仿真和实验测试,给出的结果验证了该方法在理论和实践上的可行性。
When a APF with output LCL filter starts up, it is highly possible that current surge and voltage overshoot appear because of system nonliner. In this paper, a reliable and soft start-up method for DC-voltage pumping is proposed, by inserting a resistor in series with the output of LCL-filter on the grid side. The resistor serves to limit the electric current, and at the same time improve the control system characteristics. The system can pump up smoothly without any surge. The system model and control characteristic with the resistor is analyzed, and simulation and experiment were carried to verify the feasibility of the proposed method.
出处
《电气技术》
2013年第7期16-20,29,共6页
Electrical Engineering
基金
福建省自然科学基金(2012J01258)
