| 摘要 |
The method involves recording time progressions of the residual field voltage and the supply voltage. A phase difference between the residual field voltage and the supply voltage is calculated in advance from the time progressions. A time point is determined, at which the phase difference goes below a predetermined maximum value. A switching command is triggered for turning the motor on again at a time interval that corresponds to a predetermined switching time delay, before the time point is reached. An independent claim is also included for a electrical circuit for turning on a three-phase alternating current motor after separating it from a supply voltage.
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