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中文摘要：
在新能源联合供电系统中,多输入直流变换器（multi-input DC/DC converter,MIC）可实现多路源同时或单独向负载提供能量,从而简化系统结构、降低总体成本、实现能量的优化利用。在需要隔离的应用场合,现有的MIC结构复杂、变压器绕组数量较多。为此该文提出一族不对称型双输入直流变换器,同现有隔离型双输入变换器相比,其优点是结构简单、且可以实现软开关,具有高功率密度和高效率。详细阐述该类变换器的推导过程及其控制策略,以其中某变换器为例,分析其工作原理,并通过一台240 W的原理样机进行实验验证。
英文摘要：
In the hybrid renewable power system, multipleinput DC/DC converters （MICs） serve as the interface of several sources with a load, and provide the load with the energysimultaneously or individually, which can simplify the system configuration and reduce the overall cost. In the applications with isolated requirement, the avaitable MICs usually have a complex configuration and numerous transformer windings. A family of asymmetrical double-input DC/DC converters （DICs） was proposed. Compared with the available isolated DICs, the proposed converters have the advantages of simple architecture and soft-switching realization. The derivation and the control strategy of the converters were illustrated, and the operation principles were analyzed. Finally, the theoretical analysis was validated by the experimental results from a 240 W prototype.
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