基于PWM控制的单相SVG装置设计

Design of static VAR generator based on PWM control

分析了SVG(Static Var Generator)的工作原理,详细阐述了其控制策略及通过硬件电路的实现方法,最后通过实验验证了所提出的控制方法的有效性,以及将SVG应用于低压动态无功补偿领域的可行性。

In this paper,, a multifunctional capabilities of static var generator on the basis of PWM control （PWM control-based SVG） is proposed. First of all, the operation principles of SVG are analyzed. Then is its systematic design described, including the control strategy, system structure, and circuit design of PLL. Low voltage dynamic vat compensator is achieved by the hardware platform. At last, experiments validate the validity of control method, and the application of SVG in low voltage dynamic vat compensation is also validated feasible. The simulations show that the SVG based on PWM control not only can implement the task of reactive compensation, but also can fulfill the multi-functions such as harmonics compensation, balancing loads