Simulation optimal and design of 3-kW DC-DC converter for pure electric vehicles

IF 1.9 4区工程技术 Q3 ENGINEERING, MECHANICAL

Advances in Mechanical Engineering Pub Date : 2023-09-01 DOI:10.1177/16878132231199888

Gui-Bin Sun, Shen Zhou, Yi-Jui Chiu, Zhi-Rong Lv

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引用次数: 0

Abstract

There are significant differences between pure electric vehicles and traditional fuel vehicles. High-power converters are required to meet the increased energy consumption requirements of loads within pure electric vehicles. A high-power integrated DC-DC converter is designed to meet the requirements of pure electric vehicles. First, the characteristics of LLC resonant converters are analyzed, and a fuzzy adaptive PID frequency conversion phase-shift soft switching control strategy is proposed. Second, the fuzzy controller is designed based on the MATLAB toolbox based on the characteristics of electric vehicle converters. Then, in order to further improve the efficiency of the converter, a planar transformer is proposed and optimized. It is found that with the increase in the switching frequency, the loss is smaller, which is more conducive to improving the efficiency. Simulation results show that zero-voltage switching and zero-current switching can be realized by using the proposed control strategy, and experimental results show that the proposed strategy is significantly more efficient under non-heavy-load conditions. The minimum and maximum efficiency values are 92% and 97.38%, respectively. The high-power converter ensures the normal operation of the load of pure electric vehicles. This work provides a method for developing high-power DC-DC converters and improving efficiency.

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纯电动汽车用3kw DC-DC变换器仿真优化设计

纯电动汽车与传统燃油汽车有着显著的区别。高功率转换器需要满足纯电动汽车内负载不断增加的能耗要求。针对纯电动汽车的要求，设计了一种大功率集成DC-DC变换器。首先分析了LLC谐振变换器的特性，提出了一种模糊自适应PID变频移相软开关控制策略。其次，根据电动汽车变流器的特点，利用MATLAB工具箱设计了模糊控制器。然后，为了进一步提高变换器的效率，提出并优化了一种平面变换器。研究发现，随着开关频率的增加，损耗越小，更有利于提高效率。仿真结果表明，该控制策略可以实现零电压和零电流的切换，实验结果表明，在非重载条件下，该控制策略的效率显著提高。最小效率为92%，最大效率为97.38%。大功率变流器保证了纯电动汽车负载的正常运行。为大功率DC-DC变换器的研制和效率的提高提供了方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Mechanical Engineering 工程技术-机械工程

CiteScore

3.60

自引率

4.80%

发文量

353

审稿时长

6-12 weeks

期刊介绍： Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering