| 引用本文: | 易灵芝,何 东,王书颢,刘 颉,许 芬.面向直流楼宇供电技术的新型多输入 Buck-Boost变换器[J].电力自动化设备,2014,34(5): |
| YI Lingzhi,HE Dong,WANG Shuhao,LIU Jie,XU Fen.Multi-input Buck-Boost converter for DC building power supply[J].Electric Power Automation Equipment,2014,34(5): |
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| 摘要: |
| 在直流楼宇的分布式能源供电系统中，多输入直流变换器起着将多种分布式电源进行接入、转换及协调能量管理的作用，针对此提出一种利于多种分布式电源在直流楼宇中的联合供电的新型单电感多输入Buck-Boost变换器。以双输入为例分析该变换器的工作模态，推导其输入／输出特性和功率均衡能力，提出控制策略以实现直流楼宇中的风光混合供电。在双输入变换器的基础上，通过拓扑推演得到了n路输入Buck-Boost变换器。该变换器具有电路拓扑简洁、可实现升降压、输入／输出电压同极性、各种分布式输入源可单独或同时向负载供电等优点。最后利用MATLAB仿真模型和实验验证了理论分析的正确性和控制策略的可行性。 |
| 关键词: 直流楼宇 分布式电源 多输入 Buck-Boost变换器 反极性 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（50803051）；湖南省自然科学基金资助项目（11JJ8004） |
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| Multi-input Buck-Boost converter for DC building power supply |
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YI Lingzhi, HE Dong, WANG Shuhao, LIU Jie, XU Fen
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College of Information Engineering，Xiangtan University，Xiangtan 411105，China
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| Abstract: |
| In the power supply system of distributed sources for DC building，the multi-input DC／DC converter is used for the input，conversion and coordination of multiple distributed power sources，for which，a multi-input single-inductor Buck-Boost converter is proposed. With a dual-input Buck-Boost converter as an example，its operating modes are analyzed，its input／output characteristics and power sharing capability are deduced，and a control strategy is proposed to realize the wind-photovoltaic hybrid power supply of DC buildings，based on which，the n-input Buck-Boost converter is topologically deduced. It has many advantages：simple circuit topology，both Boost and Buck functions，same polarity of input and output voltages，power supplied by either single or multiple distributed sources，etc. The correctness of theoretical analysis and the feasibility of the proposed control strategy are verified by MATLAB simulation and experiment. |
| Key words: DC building distributed power generation multiple inputs Buck-Boost converter reverse polarity |
