基于二次调压的串-并型双有源桥变换器模块化均压控制策略

INPUT VOLTAGE SHARING MODULAR CONTROL STRATEGY FOR ISOP-DAB CONVERTER BASED ON SECONDARY VOLTAGE REGULATION

为实现在宽输入电压下串-并型双有源桥(ISOP-DAB)变换器模块化均压控制,在无互联均压控制策略的基础上,提出一种基于二次调压的串-并型双有源桥变换器模块化均压控制策略。所提控制策略通过周期性通信二次调节无互联均压控制中每个模块的均压指令值,在保证系统的可靠性与可拓展性的基础上,实现了宽输入电压下ISOP-DAB的输入均压和输出电压无静差控制。实验结果验证了所提控制策略的有效性。

In order to realize the modular control of input voltage sharing for an input series output parallel-dual active bridge(ISOPDAB)converter under wide range input voltage,this paper proposes an input voltage sharing modular control strategy based on secondary voltage regulation on the basis of wireless input voltage sharing control strategy.The proposed control strategy adjusts the voltage equalization command value of each module in the wireless input voltage sharing control by periodic communication.Based on ensuring the reliability and expandability of the system,the proposed control strategy realizes the input voltage sharing and output voltage control with zero steady error for ISOP-DAB converter under wide range input voltage.The experimental results verify the effectiveness of the proposed control strategy.