DEVICE FOR CONTROLLING THREE-PHASED ASYNCHRONOUS ELECTRIC ENGINE WITH SHORT-CIRCUITED ROTOR Russian patent published in 2006 - IPC H02P3/24 H02H7/09 

FIELD: electric engineering, possible use for engineering and production of electric engines acting as parts of industrial machines.

SUBSTANCE: device for controlling three-phased asynchronous electric engine with short-circuited rotor has controlled phases of network with grounded zero bus, electric engine with stator windings, braking contactor with three closing contacts, capacitors, connected in accordance to triangular circuit, three primary diodes, three additional diodes, two auxiliary capacitors, three resistors, one of which is with middle point, and an executive organ. Working contactor is equipped with two additional disengaging contacts.

EFFECT: higher efficiency of braking and prevented loss of one or more phases.

1 dwg