混合动力车用电气无级变速器的电磁解耦优化设计

doi:10.19595/j.cnki.1000-6753.tces.170353

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摘要针对混合动力车用电气无级变速器中的电磁耦合问题展开研究。首先,通过分析电气无级变速器的功率分流模式可知,电磁场间的耦合作用虽然可提高燃油经济性和降低废气排放,但也会造成电气无级变速器中存在严重的电磁耦合问题。然后,为解决电气无级变速器内部电磁耦合问题,分别提出安装及未安装隔磁环的电气无级变速器的内部等值磁路模型以研究在两种混合励磁源下影响耦合程度的因素。接着,建立两种结构电气无级变速器的有限元模型,并依据影响耦合程度的因素分别研究二者的内部磁场分布规律;通过对所得规律的对比和分析提出最优电磁解耦方案以实现电气无级变速器优良的电磁性能和控制性能。最后,利用有限元电磁仿真分析,从磁力线、磁场分布以及转矩特性方面验证解耦方案的正确性。

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关键词 ：混合动力车, 电气无级变速器, 电磁耦合, 隔磁环, 电磁解耦方案

Abstract：This paper studied the electromagnetic coupling problem of electric variable transmission (EVT) used for hybrid electric vehicle (HEV). Firstly, by analyzing the power split mode of EVT could be seen that, although the coupling between electromagnetic fields would improve fuel economies and reduce exhaust emissions, it also caused the serious electromagnetic coupling issues of EVT. Next, to solve the internal magnetic field coupling issues of EVT, the internal equivalent magnetic circuit models of EVT with flux-isolation ring or not were proposed to research the factors affecting the coupling degree under two hybrid excitation source; Then, the finite element method (FEM) models of two kinds of EVT were established, and the internal magnetic field distribution law of them were studied respectively based on the coupling factors; Compared and analyzed of the disciplines, the optimal electromagnetic decoupling scheme was proposed to realize the excellent electromagnetic and control performances of EVT; Finally, the correctness of the decoupling scheme was verified on the basis of the magnetic field distribution, the magnetic field distribution and the torque characteristics by FEM electromagnetic simulation.

Key words： Hybrid electric vehicle electric variable transmission electromagnetic coupling flux-insulation ring electromagnetic decoupling scheme

收稿日期: 2017-04-01 出版日期: 2018-05-08

PACS:

TM359.9

通讯作者: 徐奇伟男,1983 年生,副教授,硕士生导师,研究方向为混合动力车中电气系统理论、高动态性能电驱动控制系统设计。 E-mail：xuqw@cqu.edu.cn

作者简介: 孙静女,1993 年生,硕士研究生,研究方向电动汽车中复合结构电机设计、电机驱动控制。 E-mail：sunjingzzx@163.com

引用本文:

徐奇伟, 孙静, 赵蒙, 蒋小彪, 崔淑梅. 混合动力车用电气无级变速器的电磁解耦优化设计[J]. 电工技术学报, 2018, 33(9): 2005-2014. Xu Qiwei, Sun Jing, Zhao Meng, Jiang Xiaobiao, Cui Shumei. Electromagnetic Decoupling Optimal Design of Electric Variable Transmission Used for Hybrid Electric Vehicle. Transactions of China Electrotechnical Society, 2018, 33(9): 2005-2014.

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