This paper has described an original RWD hybrid system that has been developed using a small, high-power motor and inverter. The motor configuration was optimized by incorporating the rotary position sensor and the clutch-1 actuator internally so that the transmission length would fit in the allowable space. The magnetic circuit was designed with a shape that is effective in reducing iron loss due to eddy current in concentrated winding motors. A newly devised winding method with square-shaped wires also contributes to enhancing the power of the smaller sized motor. A notable characteristic of the inverter is the power module configuration with power semiconductors directly mounted onto the busbars. This configuration enhances the heat capacity of the semiconductors, which contributes to increasing short-time current, along with the effect of high-heat-conductivity parts specially designed for this inverter. Feedback control of the gate driver circuit reduces switching loss while suppressing the surge voltage. An integrated motor-clutch control system was developed that incorporates two important strategies. One strategy is to estimate the driving torque accurately from various information about the vehicle and the other is to control the driving torque and the slip speed independently using high performance motor torque control. This system effectively eliminates unwanted variation in vehicle acceleration induced by engine start during motor drive.


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    Title :

    Development of motor and inverter for RWD hybrid vehicles


    Contributors:


    Publication date :

    2011


    Size :

    7 Seiten, 22 Bilder, 3 Tabellen, 3 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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