ELECTRIC DRIVE Russian patent published in 2014 - IPC H02P3/26 H02P25/24 H02P27/05 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and can be used in electric drive for mine winders. The device comprises a wound rotor induction motor, the main contactor with normally opened contacts and normally closed block contact, a dynamic braking contactor with normally opened contacts, an accelerating resistor, a semi-controlled three-phase rectifier and thyristors with current-limiting resistors, a resistor in excitation circuit, shunt, a thyristor switch, stabilitron and optron.

EFFECT: reduction of path to be passed by a vehicle in case of emergency shutdown of the mine winder, increase of the period between repairs for brake shoes and resultant improvement of the mine winder efficiency.

11 dwg