移相控制的双有源桥DC-DC变换器统一相量分析法

发布时间：2018-01-07 03:38

本文关键词：移相控制的双有源桥DC-DC变换器统一相量分析法　出处：《电工技术学报》2017年18期 　论文类型：期刊论文

【摘要】：提出一种用于分析移相控制双有源桥直流变换器的控制特点、功率的传输与交换特性的交流相量分析方法。通过傅里叶级数分解将变换器的动态方程转化为稳态相量表达式,从而建立适用于单移相控制、扩展移相控制以及双重移相控制的统一复功率模型,得出功率分布区域。根据变换器稳态相量表达式得出不同控制方式所对应相量分析图,并提出不同移相控制策略的实际控制区域。仿真和实验结果与理论分析一致,验证所建立复功率模型的准确性。该分析方法避免了传统瞬时功率积分方法建立移相控制直流变换器功率模型过程中计算复杂、模型不统一以及物理意义不明确等问题,方便了多控制自由度情况下,变换器控制策略的选择与设计。
[Abstract]:This paper presents an analysis of the control characteristics of dual active bridge DC / DC converters with phase shift control. The AC phasor analysis method of power transmission and exchange characteristics is presented. The dynamic equation of the converter is transformed into a steady state phasor expression by Fourier series decomposition, which is suitable for single phase shift control. Based on the unified complex power model of extended phase shift control and dual phase shift control, the power distribution region is obtained. According to the steady-state phasor expression of the converter, the corresponding phasor analysis diagram of different control modes is obtained. The actual control regions of different phase shift control strategies are proposed. The simulation and experimental results are consistent with the theoretical analysis. The accuracy of the established complex power model is verified. This analysis method avoids the complexity of calculation in the establishment of phase shift converter power model by traditional instantaneous power integration method. The model is not uniform and the physical meaning is not clear, which facilitates the choice and design of the converter control strategy in the case of multi-control degrees of freedom.
【作者单位】：中国矿业大学(北京)机电与信息工程学院;中国电力科学研究院配电变压器节能技术北京市重点实验室;
【基金】：国家自然科学基金项目(51077125,51577187) 国家电网公司基础前瞻性科技项目(PD71-17-024)资助
【分类号】：TM46
【正文快照】： 0引言高频隔离双向直流变换器,由于其在新能源发电系统、能源互联网接口电路以及能量存储系统中的核心应用价值,近年来成为电力电子学科领域的研究热点[1,2]。在此类变换器中,双有源桥直流变换器因其模块化的对称结构、较高的功率密度、零电压开关、双向能量传输能力以及简单

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