Bidirectional DC/DC converter for auxiliary power system of electric vehicle

被引：0
|
作者：
Zhou M.-L. [1 ]
Liu Y. [1 ]
Huang F.-T. [1 ]
Wu X.-G. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2020年 / 24卷 / 11期
关键词：
Bidirectional DC/DC converter; Loop compensation; Power level; Small signal modeling; Soft switching; Switching loss; Two-phase interleaved;
D O I：
10.15938/j.emc.2020.11.009
中图分类号：
学科分类号：
摘要：
Aiming at performance requirements of electric vehicle auxiliary power system, a bidirectional DC/DC converter for electric vehicle auxiliary power system was presented. The two-phase interleaved bidirectional half-bridge circuit was used as the main topology of the bidirectional DC/DC converter, which improves the power level of the converter and reduces the total inductor current ripple. The boost mode and the buck mode of the converter were modeled by small signals, and the double closed-loop control method was used to compensate the converter. The compensation results show that the converter has good dynamic performance and steady-state performance. The asymmetric soft switching technology was used on the bidirectional DC/DC converter, which reduces the switching loss and optimizes the overall performance of the converter. A 600 W experimental prototype was developed to test the performance indicators of the DC/DC converter in the two modes. The experimental results show that the designed converter meets the requirements of various design indexes such as efficiency and output voltage ripple rate, which further confirms effectiveness of the proposed control method and the rationality and correctness of the selected converter topology and parameters. © 2020, Harbin University of Science and Technology Publication. All right reserved.
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页码：73 / 81
页数：8
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