LCL谐振型双有源全桥双向DC-DC变换器分析与控制

发布时间：2018-01-11 06:11

本文关键词：LCL谐振型双有源全桥双向DC-DC变换器分析与控制　出处：《电力系统自动化》2016年19期 　论文类型：期刊论文

【摘要】：研究了一种新型LCL谐振型双有源全桥双向DC-DC变换器。根据LCL谐振网络的基本特性,在双移相控制方式下,使得初、次级全桥的交流侧电压与电流同相位,实现了单位功率因数,基本可以消除双有源全桥变换器中普遍存在的回流功率。在时域波形分析的基础上,建立了各次谐波的交流等效模型,计算了各次谐波传输功率相对于基波传输有功功率的比值,并通过基波近似法进一步研究了变换器的功率传输特性。最后,设计了一台额定功率为3.6kW的实验样机,特征波形、回流功率的实验与分析结果吻合,并验证了其运行在宽负载电压和功率范围内的良好特性。
[Abstract]:A novel LCL resonant dual-active full-bridge bi-directional DC-DC converter is studied in this paper. According to the basic characteristics of the LCL resonant network, under the dual phase shift control mode, the initial phase is obtained. The AC side voltage and current of the secondary full bridge are in the same phase, realizing the unit power factor, which can basically eliminate the common backflow power in the dual-active full-bridge converter. Based on the analysis of the time-domain waveform. The AC equivalent model of each harmonic is established, the ratio of the harmonic transmission power to the active power transmitted by the fundamental wave is calculated, and the power transmission characteristics of the converter are further studied by the fundamental wave approximation method. An experimental prototype with rated power of 3.6 kW is designed. The experimental results of characteristic waveform and reflux power are in agreement with the analytical results, and its good performance in wide load voltage and power range is verified.
【作者单位】：北京交通大学国家能源主动配电网技术研发中心;
【基金】：北京市科技计划项目(Z141100004014019)~~
【分类号】：TM46
【正文快照】： 0引言双有源全桥(dual active bridge,DAB)双向DC-DC变换器可以实现能量双向流动,提供电气隔离,能够工作在升压和降压模式下,适应于各种电压等级,在微网系统的储能场合中得到了广泛应用[1-2]。同时,DAB变换器也适用于电动汽车入网(vehicleto grid,V2G)、可再生能源转换系统、

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