Speed sensitive field weakening control for traction motors

Details Speed sensitive field weakening control for traction motors Speed sensitive field weakening control for traction motors

H - Electricity

02

P

318/96

H02P 7/28 (2006.01)

Patent

CA 1130373

ABSTRACT OF THE DISCLOSURE Disclosed herein is an overspeed control for a direct current motor including a solenoid switch which is connected between a source of direct current and the motor so as to control energization of the direct current motor, which is biased open, and which includes a solenoid coil operable in response to energization thereof to close the switch, which overspeed control comprises a switch connected in series with the coil for selectively connecting the coil to a source of direct current, and a device responsive solely to motor speed for operating the switch to control energization of the direct current motor.

362363

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