基于协调控制的混合微网双向变换器研究

Research on Bidirectional Converters in a Hybrid Microgrid Based on Coordination Control

孤岛模式下,提出一种协调控制实现交、直流混合微电网双向变换器的环流抑制和功率均分。采用下垂控制器实现功率自动均分,并通过PI控制器改变零矢量作用时间实现环流抑制。通过仿真和实验验证了所提算法能够有效地实现环流减少以及功率自动均分。

A coordination control method for multiple bidirectional power converters was proposed to reduce the circulating current and acbieve power-sharing in island mode.The droop controller was used to achieve automatic power sharing and the PI controller was used to further reduce circulating current.Simulation and experiment results verify that the proposed control method can simultaneously achieve circulating current reduction and automatic power sharing.