无源性控制策略在中性线有源电力滤波器中的应用

Passivity-based control applied in the neutral active power filter

近年来,配电网的电能质量问题日益突出,有源电力滤波器(APF)由于其突出优点成为解决该问题的主要技术手段之一。首先建立基于单相VSI的中性线APF的Euler-Lagrange(EL)系统模型,在此基础上对系统进行无源性设计,获得相应的电流跟踪控制策略,并基于FPGA设计了一块控制板。最后,仿真及对10 kVA中性线有源滤波器的实验结果证明了上述显著特性。

In recent years, there are many power quality problems in the distribution system, and active power filter（APF） becomes one of the main technique. This paper first establishes the Euler-Lagrange（EL） model of the neutral APF based on single-phase VSI, which the passivity design is based on. Then the control scheme tracking the desired current is derived accordingly and a PCB board is designed to carry out the algorithms based on FPGA. The simulation and experiment result shows the validity of the design in the end.