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补偿电流的检测是三相有源电力滤波器的关键问题,快速准确地检测出补偿电流并实施有效的控制直接影响到有源电力滤波器的补偿效果。对三相三线制有源电力滤波器进行电路模型分析,采用T-S模糊反馈控制的方法,获得三相三线制有源电力滤波器的补偿电流,并对电源电流进行实时的模糊反馈控制。采用并行分布补偿的方法设计了模糊反馈控制器,将有源电力滤波器的非线性问题线性化,在稳定性条件下求解线性矩阵不等式,得到无功功率及谐波电流全补偿控制策略的状态反馈增益,由此获得连续的即时补偿跟踪电流,仿真及实验结果验证了补偿电流检测的准确性及模糊反馈控制的有效性,对简化有源滤波器的电流检测与其构成组件具有较大应用价值。
The detection of compensation current is the key issue of three-phase active power filter. Detecting the compensation current quickly and accurately and implementing effective control directly affect the compensation effect of active power filter. Three-phase three-wire active power filter circuit model analysis, the use of T-S fuzzy feedback control method to obtain three-phase three-wire active power filter current compensation, and the power supply current real-time fuzzy feedback control. The fuzzy feedback controller is designed by using the method of parallel distributed compensation. The nonlinear problem of active power filter is linearized and the linear matrix inequality is solved under the condition of stability. The control strategy of reactive power and harmonic current compensation is obtained Feedback gain, thus obtaining a continuous real-time compensation tracking current, the simulation and experimental results verify the accuracy of compensation current detection and fuzzy feedback control of the effectiveness of the simplified active filter current detection and its components have great application value .