Drive comprising a in the form of a converter can be fed electric motor, in particular three-phase motor, and method for operating a drive

摘要

Drive, comprising a in the form of a converter can be fed electric motor, in particular three-phase motor, and method for operating a drive,the converter at the inlet side, from an a.c. power supply, in particular of a three-phase a.c. power supply is powered,a switching device between the a.c. power supply and the motor is arranged,the switching device has controllable alternating current switch, so that upon actuation of the switching device, in particular in the case of closing of controllable ac switches of the switching device, the motor can be fed directly from the a.c. power supply, in particular of the motor directly from the ac mains, optionally with a first or second field the direction of rotation can be fed.