Abstract：In order to reduce the complexity of harmonic current detection of active power filters and solve the problem of power supply current distortion with the change of nonlinear loads,a nonlinear control strategy based on the Lyapunov Function for the shunt hybrid active power filter (SHAPF) is proposed.The affine nonlinear model of the SHAPF is built,and voltage-current double closed loops are designed.For the inner current loop,a novel nonlinear control strategy based on the Lyapunov function is proposed to improve the global asymptotic stability.The strategy is a simple solver to realize the decoupling control of the reactive power compensation current and thus achieve fast tracking of harmonic reference current.Considering the anti-interference performance of the system as an optimization goal,the optimal controller gain is obtained to smooth power fluctuation caused by parameter perturbation or load step demand.For the outer voltage loop,a nonlinear sliding mode control method is adopted to stable the capacitor voltage when the load changes and disturbance occurs.The simulation results of Matlab/Simulink and experimental results of dSPACE platform show that the proposed nonlinear control method based on the Lyapunov function for the SHAPF is simple,highly stabile,and strongly robust.
薛花,范月,王育飞. 基于李雅普诺夫函数的并联型混合有源电力滤波器非线性控制方法[J]. 电工技术学报, 2016, 31(21): 133-141.
Xue Hua,Fan Yue,Wang Yufei. Nonlinear Control Strategy Based on Lyapunov Function for Shunt Hybrid Active Power Filter. Transactions of China Electrotechnical Society, 2016, 31(21): 133-141.
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2016, Vol. 31 
