有源电力滤波器的频域能量变换模型及其应用  

Frequency-domain Energy Converting Model of Shunt Three-phase Voltage-source Active Power Filter and Application

作　　者：查晓明[1] 石峰[1] 宫金武[1] 孙建军[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072

出　　处：《中国电机工程学报》2009年第4期84-90,共7页Proceedings of the CSEE

摘　　要：有源电力滤波器(active power filter,APF)的建模问题对其功率变换过程认识及控制器设计有重要意义。基于目前研究广泛的并联电压型APF,建立其等效电压源模型;通过对APF与电力系统间能量交换及功率流动的分析,提出APF频域能量变换的思想,并建立频域能量变换模型;建立其状态空间数学模型,通过变换,证明APF的基波控制分量对频域误差系统呈阻尼特性,从而使APF对频域呈无源性特征,从能量角度解释了APF的工作原理;基于频域能量变换模型提出迭代学习控制策略,并对直流侧电容电压附加PI闭环控制。仿真实验结果证明了该频域能量变换思想及模型的正确性,并验证了所设计控制策略的有效性。Modeling of active power filter （APF） is important in knowing about the process of power converting and designing controller with good performance. The equivalent voltage-source circuit model was constructed based on shunt voltage-source APF, which was studied widely now. A point of view in frequency-domain energy-converting was presented and the corresponding model was constructed by analyzing the energy and power exchanges between APF and the power system. The mathematic analysis of the model based on state space showed the harmonic-damping feature of the fundamental control component. APF is with passive character in frequency-domain and the operation principle of APF was explained. On the base of the frequency-domain energyconverting model, an iterative learning control strategy was presented. The voltage of DC-side capacitor was controlled by an additional PI close-loop. Simulation and experimental results show the view and the model are correct and the controller designed based on the model is valid.

关 键 词：有源电力滤波器 频域能量变换模型 基波控制阻尼注入 无源性 控制器设计 

分 类 号：TM71[电气工程—电力系统及自动化] TN713[电子电信—电路与系统]