摘要
双向DC/DC变换器是电力储能系统的重要组成部分,针对传统单相双向DC/DC变换器储能电感过大,变换器功率较低的缺点,文中提出了一种三相交错并联双向DC/DC变换器的拓扑结构。在此基础上分析了其工作原理及控制策略,并进行了仿真验证。仿真结果表明,三相交错并联双向DC/DC变换器应用于电力储能系统能获得较好的电压、电流波形,有效降低电感电流,提升系统的功率等级,为电网及储能系统的安全稳定运行提供了保障。
The bi-directional DC/DC converter is an important part of the power energy storage system.Due to the using of single-phase circuit structure,traditional bi-directional DC/DC converter's energy storage inductance is too large,the ascension of the converter power has limited.In this paper,a three-phase interleaved bi-directional DC/DC converter topology is proposed,and its working principle and control strategy are analyzed,and the simulation results are also presented.The simulation results show that the three-phase interleaved bi-directional DC/ DC converter used in electric power energy storage system can achieve better voltage and current waveforms,effectively reduce the inductance current,enhance the power level of electric system,provides a guarantee for the safe and stable operation of the power grid and energy storage system.
引文
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