This report describes the development of a two-quadrant dc-dc converter and its high-current power Darlington transistors. The converter or chopper controls the armature currentof a separately excited dc machine, which is employed in an electric vehicle recently developed by the General Electric Company and Chrysler Corporation under U.S. Department of Energy (DOE) sponsorship. A photograph of the 1450 kg (curb weight) vehicle is shown in Figure 1. A relevant list of vehicle performance goals are given in Table 1. The chopper, controlled by a microcomputer, operates in a variable frequency, variable pulse width mode to maximize efficiency and maintain smooth vehicle control. The Darlington features a solderable metal contact system and a method for the dielectric isolation resulting in the improved performance of the device.These features are accompanied by substantial reductions in the weight and the volume of the packaged converter. Before the transistors are mounted onto a heat spreader, they are fabricated into Subscrete form. In this report, we will discuss thermal, mechanical, and electrical features of the converter circuit and its power Darlington, and present salient operating results.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    A two-quadrant transistor chopper for an electric vehicle drive utilizing monolithic integrated power Darlington transistors


    Additional title:

    Ein Zwei-Quadrant-Transistorchopper fuer den Antrieb eines Elektroautos mit monolithisch integrierten Darlington-Leistungstransistoren


    Contributors:


    Publication date :

    1980


    Size :

    14 Seiten, 21 Bilder, 2 Tabellen, 24 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    High-frequency four-quadrant chopper using GTO for electric rolling stock

    Ashiya, M. / Naruto, M. / Kaneda, J. et al. | Tema Archive | 1985



    Reverse-Bias Second Breakdown of High-Power Darlington Transistors

    Chen, D.y. / Lee, F.c. / Blackburn, D.L. et al. | IEEE | 1983


    Monolithic four-quadrant multiplier

    Lampe, D. R. | NTRS | 1981