ELECTRIC AUTOMOBILE

摘要

PURPOSE:To obviate the necessity of dedicated charger while making it possible to charge an electric automobile from AC commercial power supply and to simplify the constitution. CONSTITUTION:A motor drive power converter 22 mounted on an electric automobile is provided with bilateral power converting junction such that the battery of the electric automobile is charged with external AC or DC power whereas AC current is obtained through A/D or D/A conversion of the power converter 22. Furthermore, the motor drive power converter 22 is provided with bilateral D/D power converting function through the combination of D/A conversion and booster chopper control so that the battery of electric automobile is charged externally with AC or DC power by utilizing the winding of an AC motor 23 as a reactor required for chopper control whereas step-up or step-down charging is performed through chopper control of the power converter 22.