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双输入直流变换器的建模与闭环系统设计

, PP. 90-99

Keywords: 多输入,直流变换器,联合供电系统,建模

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Abstract:

在采用两个甚至多个输入源的新能源联合供电系统中,用单个多输入直流变换器代替原有的多个单输入直流变换器,可以简化电路结构,降低系统成本。采用MIC构成的新能源联合供电系统是一个典型的多输入-多输出耦合系统,因此,闭环系统的设计非常复杂。本文将以双输入Buck变换器为例,进行系统建模以及闭环调节器的设计,使得该系统稳态和动态性能指标达到要求。最后通过一个400W的实验样机验证该设计方法的有效性。此设计方法也可以应用于其他的双输入直流变换器构成的新能源联合供电系统中。

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