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基于多功能降压-升压拓扑的电动汽车用复合 DC-DC 变换器。

A Composite DC-DC Converter Based on the Versatile Buck-Boost Topology for Electric Vehicle Applications.

机构信息

Department of Engineering Sciences, Universidad Andres Bello, Santiago 7500971, Chile.

Department of Electromechanics and Energy Conversion, Universidad de Talca, Curicó 3340000, Chile.

出版信息

Sensors (Basel). 2022 Jul 20;22(14):5409. doi: 10.3390/s22145409.

DOI:10.3390/s22145409
PMID:35891089
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9320455/
Abstract

The composite converter allows integrating the high-efficiency converter modules to achieve superior efficiency performance, becoming a prominent solution for electric transport power conversion. In this work, the versatile buck-boost dc-dc converter is proposed to be integrated into an electric vehicle composite architecture that requires a wide voltage range in the dc link to improve the electric motor efficiency. The inductor core of this versatile buck-boost converter has been redesigned for high voltage applications. The versatile buck-boost converter module of the composite architecture is in charge of the control stage. It provides a dc bus voltage regulation at a wide voltage operation range, which requires step-up (boost) and step-down (buck) operating modes. The PLECS thermal simulation of the composite architecture shows a superior power conversion efficiency of the proposed topology over the well-known classical noninverting buck-boost converter under the same operating conditions. The obtained results have been validated via experimental efficiency measures and experimental transient responses of the versatile buck-boost converter. Finally, a hardware-in-the-loop (HIL) real-time simulation system of a 4.4 kW powertrain is presented using a PLECS RT Box 1 device. The HIL simulation results verified the accuracy of the theoretical analysis and the effectiveness of the proposed architecture.

摘要

复合变流器允许集成高效的变流器模块，以实现卓越的效率性能，成为电动交通电力转换的突出解决方案。在这项工作中，提出了一种通用的升降压直流-直流变流器，将其集成到电动汽车复合架构中，该架构需要在直流环节中具有宽电压范围，以提高电动机效率。这种通用升降压变流器的电感器铁芯经过重新设计，可用于高压应用。复合架构的通用升降压变流器模块负责控制阶段。它在宽电压工作范围内提供直流母线电压调节，需要升压（boost）和降压（buck）工作模式。复合架构的 PLECS 热仿真表明，与相同工作条件下著名的经典非反相降压-升压变流器相比，所提出的拓扑具有更高的功率转换效率。通过通用升降压变流器的实验效率测量和实验瞬态响应验证了获得的结果。最后，使用 PLECS RT Box 1 设备提出了一个 4.4kW 动力传动系统的硬件在环（HIL）实时仿真系统。HIL 仿真结果验证了理论分析的准确性和所提出架构的有效性。

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