SELF-CONTAINED ELECTRIC CONTROL DEVICE Russian patent published in 2010 - IPC H02P9/02 

FIELD: electricity.

SUBSTANCE: device consists of power sources, rheostat, dc electric motor, synchronous generator with exciter, three-phase rectifier with smoothing filter and salve unit. To the device there introduced is commutator of power source, unit of automatic power controls and unit of automatic tripping devices; at that, output of rheostat is connected to the first input of power source commutator, which has output and the second input, which are connected to input of electric motor and to output of automatic power controls unit respectively, the group of inputs of which is connected to group of outputs of automatic tripping devices unit having the input connected to output of three-phase rectifier with smoothing filter.

EFFECT: providing enhanced rotation time of shaft at various frequencies at switched off power source.

1 dwg