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带解耦控制的三输入直流变换器建模及调节器设计

, PP. 109-118

Keywords: 新能源联合供电系统,多输入直流变换器,建模,解耦,调节器设计

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Abstract:

在包含多个输入源的新能源联合供电系统中,采用一个多输入直流变换器(MIC)代替传统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。本文以一种新型的Buck、Boost、Buck-Boost三输入变换器为例,将解耦控制环节加入系统中,这样就可以方便的进行闭环调节器的设计,从而提高系统的稳态和动态性能。最后通过一个400W的原理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三输入直流变换器系统中。

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