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DC–DC Converter for Dual-Voltage Automotive Systems Based on Bidirectional Hybrid Switched-Capacitor Architectures

机译:基于双向混合开关电容器架构的双电压汽车系统DC-DC转换器

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摘要

Automotive embedded electronic systems have been increasing in power and complexity and, therefore, more advanced power electronic converters are necessary in these vehicles. Several dual-voltage (42 V/14 V) bidirectional converter architectures have been proposed for automotive systems in recent years. However, most of them have low efficiency or are based in series and parallel configurations with large number of semiconductors and magnetics devices. Therefore, in this paper, we propose a bidirectional high-efficiency converter with lower number of components. This converter was created by merging a switched-capacitor converter and a conventional bidirectional converter, resulting in a hybrid topology. The voltage across the semiconductors of the proposed converter is equal to half of the highest voltage source value. Furthermore, the topology is composed of only one inductor to control the power flow between the two voltage sources. To verify all the mentioned features, a prototype was implemented experimentally, reaching a maximum efficiency of 97.5%.
机译:汽车嵌入式电子系统的功率和复杂性不断增加,因此,在这些车辆中需要更先进的功率电子转换器。近年来,已经提出了几种用于汽车系统的双电压(42 V / 14 V)双向转换器架构。但是,它们中的大多数效率低下,或者基于串联和并联配置,具有大量的半导体和磁性器件。因此,在本文中,我们提出了一种组件数量较少的双向高效转换器。该转换器是通过合并开关电容器转换器和常规双向转换器而创建的,从而形成了混合拓扑。所提出的转换器的半导体两端的电压等于最高电压源值的一半。此外,该拓扑仅由一个电感器组成,以控制两个电压源之间的功率流。为了验证所有提到的功能,通过实验实现了原型,最高效率达到了97.5%。

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