关键词:  混合储能, H∞控制器, 区域极点配置, 功率分配

Abstract:  ABSTRACT：   In the view of the traditional hybrid energy storage convertor design basing on accurate model without considering the uncertainties （such as super capacitor terminal voltage and load）, this paper proposes a robust H-infinity controller. Based on the established state space model and the selected uncertainties, we use convex optimization theory to design a multi cell model of super capacitor （SC） and lithium battery （LB）. The power allocation is achieved by the first order low-pass filter （LPF） when the change of the uncertainty leads to the moving of the steady working point, which leads to the fluctuation of the bus voltage. SC deals with the high frequency fluctuation and LB deals with low frequency fluctuations. We minimize the impact of uncertainties changes on the bus voltage by combining with the designed H-infinity controller, and adopt regional pole assignment method to improve the dynamic response. Then, we use the linear matrix inequality （LMI） to obtain the H-infinity control state feedback control parameters of SC and LB. Finally, the effectiveness of the proposed method has been proved by MATLAB experiment.

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