An Isolated Three-Port Bidirectional DC-DC Converter With Decoupled Power Flow Management
An Isolated Three-Port Bidirectional DC-DC Converter With Decoupled Power Flow Management
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DOI：
10.1109/tpel.2008.2002056
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发表时间：
2008-11
影响因子：
6.7
通讯作者：
Chuanhong Zhao;S. Round;J. Kolar
中科院分区：
文献类型：
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作者：
Chuanhong Zhao;S. Round;J. Kolar
提出了一种由三个全桥单元和一个高频Transformer组成的隔离式三端口双向DC-DC变换器。除了移相控制管理端口之间的功率流，利用占空比控制优化系统的行为进行了讨论，并研究了确保最小的总系统损耗的控制律。此外，动态分析和相关的控制设计。建立了面向控制的变换器模型，给出了控制输出传递函数的波特图。为了获得快速的动态响应，采用了解耦潮流管理的控制策略。最后，一个1.5千瓦的原型已经建成，以验证所有的理论考虑。所提出的拓扑结构和控制是特别相关的混合动力电动汽车和可再生能源发电系统中的多电压电气系统。
An isolated three-port bidirectional dc-dc converter composed of three full-bridge cells and a high-frequency transformer is proposed in this paper. Besides the phase shift control managing the power flow between the ports, utilization of the duty cycle control for optimizing the system behavior is discussed and the control laws ensuring the minimum overall system losses are studied. Furthermore, the dynamic analysis and associated control design are presented. A control-oriented converter model is developed and the Bode plots of the control-output transfer functions are given. A control strategy with the decoupled power flow management is implemented to obtain fast dynamic response. Finally, a 1.5 kW prototype has been built to verify all theoretical considerations. The proposed topology and control is particularly relevant to multiple voltage electrical systems in hybrid electric vehicles and renewable energy generation systems.