重型车辆W-ECHPS中绕组式永磁耦合器的稳态性能研究*

doi:10.19562/j.chinasae.qcgc.2019.06.014

摘要/Abstract

摘要： 为解决重型车辆液压助力转向系统在转向路感差和能耗高的问题,提出了基于绕组式永磁耦合器(WTPMC)的电控液压助力转向系统(W-ECHPS)。文中介绍W-ECHPS系统和WTPMC的结构原理;确定不同行驶工况下WTPMC的运行参数,为WTPMC的设计和基于行驶工况的性能研究提供依据;采用Ansoft Maxwell软件对WTPMC进行有限元仿真,以研究其稳态性能,包括电磁性能、调速器性能和转差功率回收性能;在仿真结果满足要求的基础上,试制WTPMC样机并进行台架试验,并与空载时线反电动势、IGBT占空比和超级电容端电压的仿真结果对比。结果表明:仿真结果与试验数据基本一致,WTPMC具有良好的电磁性能,能满足运行极限点的要求,通过调节IGBT的占空比,能在不同行驶工况下运行,同时,其具有良好的转差功率回收性能,在不同行驶工况下的转差功率回收率在67.4%～72.5%之间。

关键词: 绕组式永磁耦合器, 电控液压助力转向, 有限元仿真, 稳态性能, 转差功率回收

Abstract: To solve the problems of poor steering feeling and high energy consumption in the hydraulic power steering system of a heavy vehicle, a winding type permanent magnet coupler (WTPMC)-based electronically controlled hydraulic power steering (W-ECHPS) system is proposed in this paper. The structural principles of W-ECHPS and WTPMC are introduced, the operating parameters of WTPMC under different driving conditions are determined to provide the basis for its design and performance study based on driving condition. Finite element simulations on WTPMC using Ansoft Maxwell software are conducted to study its steady-state performances, including electromagnetic, speed-regulating and slip power recovery performances. On the basis of simulation results meeting requirements, WTPMC prototype is manufactured and bench tests are carried out with their results compared with simulation ones in respects of line back-EMF in no-load condition, duty ratio of IGBT and terminal voltage of ultracapacitor. The results show that the outcomes of simulation basically agree with test data, WTPMC has good electromagnetic performance, can meet the requirement of operating limits, and can operate in different driving conditions by regulating the duty ratio of IGBT. In addition, it has good slip power recovery performance, with a slip power recovery rate between 67.4% and 72.5%.

Key words: winding type permanent magnet coupler, electronically controlled hydraulic power steering, finite element simulation, steady-state performance, slip power recovery

夏磊, 江浩斌, 耿国庆. 重型车辆W-ECHPS中绕组式永磁耦合器的稳态性能研究^*[J]. 汽车工程, 2019, 41(6): 703-710.

Xia Lei, Jiang Haobin, Geng Guoqing. A Study on Steady-state Performance of Winding Type Permanent Magnet Coupler in W-ECHPS System of a Heavy Vehicle[J]. Automotive Engineering, 2019, 41(6): 703-710.

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重型车辆W-ECHPS中绕组式永磁耦合器的稳态性能研究^*

A Study on Steady-state Performance of Winding Type Permanent Magnet Coupler in W-ECHPS System of a Heavy Vehicle

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