| 摘要 |
An electrical machine in a motor vehicle is controlled by an inverter, which motor vehicle has an automatically or manually actuatable transmission. The electrical machine generates, in generator mode, electrical energy that is stored in an energy reservoir. In a fault situation, at least one variable characterizing the charge state of the energy reservoir is detected and compared with a predefined lower threshold value, and upon a shortfall below the lower threshold value, the electrical machine is switched into a freewheeling mode by opening the inverter's switching elements. For an automatic transmission, a higher transmission ratio than a present transmission ratio is additionally established; for a manual transmission, the driver is notified by a message that a lower gear needs to be engaged. |
