交流发电机供电的电动牵引测功机

T. Jones, H. Stewart, D. Wilson
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引用次数: 1

摘要

更小、更轻的汽车在一定程度上实现了提高燃油效率汽车的国家目标,从而产生了对更小、更兼容的仪表的需求。以前为普通车辆设计的牵引测力计无法为雪佛兰这样的小型车提供足够低的拉杆水平。测力拖车为乘用车提供可控的减速力,模拟爬坡。本文介绍了一种专为现代车辆设计的测功机的电气、机械特性和操作方法。提出了一种为测功机上使用的涡流缓速器提供可控电力的改进方法。改进后的系统使用24伏生产交流发电机向涡流缓速器提供可控直流电。通过调节交流发电机的励磁电流来控制输送到涡流缓速器的电流。转动交流发电机的旋转能量来源于测功机拖车的向前运动。改进后的系统消除了以前使用的汽油发电机和硅控制整流器系统的需要。改进后的方法大大降低了初始硬件成本、运行维护成本和噪声水平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Alternator energized electric towing dynamometer
The national goals of more fuel efficient automobiles are being achieved in part by smaller and lighter vehicles resulting in demands for smaller and compatible instrumentation. Previously designed towing dynamometers for regular-sized vehicles were unable to provide adequately low drawbar levels for small cars like the Chevette. The dynamometer trailer provides a controllable retarding force on the passenger car to simulate hill climbing. This paper describes electrical and mechanical characteristics and operation of a dynamometer specifically designed for contemporary vehicles. An improved method is outlined for supplying controlled electrical power to eddy-current retarders used on the dynamometer. The improved system uses a 24 volt production alternator to supply controlled direct current to the eddy-current retarder. The current delivered to the eddy-current retarder is controlled by adjusting the alternator's field current. Rotational energy to turn the alternator is derived from forward motion of the dynamometer trailer. The improved system eliminates the need for the previously used gasoline-powered generator and silicon-controlled rectifier system. The improved method greatly reduces initial hardware cost, operating and maintenance cost, and noise level.
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CiteScore
2.20
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