双向DC-DC变换器作为微电网的重要组成部分，可以实现各个微源之间的能量流动，但变换器并联运行时存在均流问题。为了解决双向DC-DC变换器的抗扰动能力和均流控制效果，在建立双向DC-DC变换器数学模型的基础上，设计了一种电压电流双闭环自抗扰控制(ADRC)策略，同时考虑双向DC-DC变换器并联运行的均流特性，将ADRC与中间电流均流控制相结合，提出了一种适用于DC-DC变换器的自抗扰均流控制算法。仿真结果表明,与传统PI控制系统相比，该控制系统具有更优的快速性、鲁棒性和适应性。

As an important part of microgrid, bidirectional DC-DC converter can realize the energy flow among various micro sources. However, current sharing problem exists when the converter is operated in parallel. In order to improve the anti-disturbance ability and current sharing control effect of bidirectional DC-DC converter, based on the mathematical model of bidirectional DC-DC converter, a voltage-current double-closed-loop active disturbance rejection control (ADRC) strategy is designed. Considering the current sharing characteristic of parallel operation of bidirectional DC-DC converter, an ADRC current sharing control algorithm for DC-DC converter is proposed by combining ADRC and intermediate current sharing control. The simulation results show that the proposed control system has better rapidity, robustness and adaptability than the traditional PI control system.

国家自然科学基金项目（51507188）