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The Accounting a Incomplete Controllability in the Mathematical Model of Bidirectional DC-DC Converter for Frequency Controlled Electric Drive with Supercapacitors

机译:具有超级电容器的频率控制电驱动双向DC-DC转换器数学模型中不完全可控性的考虑

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In the article the mathematical model of the bidirectional DC-DC converter with accounting the incomplete controllability is considered. The article shows that the mode of incomplete controllability appears during the mode changing of DC-DC converter from Buck to Boost and vice versa. It is assumed that the DC-DC converter operates as a part of variable frequency drive and it is used to connect the block of supercapacitors to the DC link of frequency converter. In this case, in the construction of a mathematical model of DC-DC converter it is necessary to consider the DC link model of the frequency converter, which has a significant influence on transients in the system. The developed mathematical model also takes into account the work of the DC-DC converter in DCM and CCM. The paper presents an equations system of mathematical model, block diagram and simulation results of the DC-DC converter. It is shown that the incomplete controllability of DC-DC converter has a significant influence on the transients in the system.
机译:在本文中考虑了不完全可控性的双向DC-DC转换器的数学模型。该文章表明,在DC-DC转换器从Buck升压到Boost时,反之亦然,出现了不完全可控的模式。假定DC-DC转换器作为变频器的一部分运行,并且用于将超级电容器模块连接到变频器的DC链路。在这种情况下,在构建DC-DC转换器的数学模型时,有必要考虑变频器的DC链路模型,该模型对系统中的瞬变有重大影响。开发的数学模型还考虑了DCM和CCM中DC-DC转换器的工作。本文提出了一个DC-DC转换器的数学模型,框图和仿真结果的方程组。结果表明,DC-DC变换器的不完全可控性对系统中的瞬变有很大的影响。

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