Interest in using electric drive systems in vehicle powertrain applications has increased in recent years as a way to reduce emissions and/or increase fuel economy. The electric drive may be used in a series hybrid, parallel hybrid, or pure elecric configuration. Each of these applications poses unique sets of requirements for electric drive systems in the areas of output torque, speed range, mass and size, efficiency, fault handling, and torque control. General Motors (GM) has previously developed and produced electric traction systems based on induction motor technology. Currently, synchronous permanent magnet and switched reluctance technologies are also feasible in the power range required by an electric traction system. In order to assess the suitability of these competing technologies for traction application, four electric drive systems (induction motor, swithced reluctance, surface mount and interior permanent magnet) were developed to a common set of requirements and tested. The drive systems included the components of motor, inverter, reduction gear set, and differential. The performance test results of the four systems were compared, and the suitablity of each technology for different traction applications was assessed. It was found that the induction motor system is well suited to variable and high speed drives, particularly low duty cycle applications. The permanent magnet systems may have advantages in low or constant speed applications with high duty cycle due to potentially higher efficiency, or in applications where packaging is tightly constrained due to increased power density, but several issues are identified for wide speed range operation. The switched reluctance system was found to have significant disadvantages in efficiency and power density as compared to the induction motor system.


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    Title :

    A comparison of induction, permanent magnet, and switched reluctance electric drive performance in automotive traction applications


    Contributors:
    Conlon, B. (author)


    Publication date :

    2001


    Size :

    16 Seiten, 14 Bilder, 9 Tabellen, 5 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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