| 摘要 |
<p>The drive device has direct current (DC) power supply units (11,13), and an alternating current (AC) motor (1) having two star windings (2,3) arranged in the same slots and driven by pulse width modulation (PWM) inverters (4,5). A control device controls the inverters in charging mode, such that the inverter (4) functions as inverter and inverter (5) functions as rectifier, and the current flows inductively from power supply unit (13) into the star winding (2) through the inverter (4) and the current flows from power supply unit (11) into the star winding (3) through rectifier. The drive device has two direct current (DC) power supply units, and an alternating current (AC) motor having two star windings arranged in the same slots and driven by two pulse width modulation (PWM) inverters. A switching device (S1) is connected to the power supply units. In operating mode, the inverters are connected in parallel to power supply unit (11) by the switching device. In charging mode, the inverters are connected in series to the power supply unit (13) by the switching device. A control device controls the inverters in operating mode, such that the current of power supply unit (11) flows to the AC motor over the inverters. The control device controls the inverters in the charging mode, such that the inverter (4) functions as an inverter and the inverter (5) functions as rectifier, and the current flows inductively from power supply unit (13) into the star winding (2) through the inverter (4) and the current flows from power supply unit (11) into the star winding (3) through the rectifier. An independent claim is included for a method for operating a vehicle.</p> |
