Power control of a stalling motor

Details Power control of a stalling motor Power control of a stalling motor

H - Electricity

02

P

318/103, 318/45

H02P 7/34 (2006.01)

Patent

CA 1081316

ABSTRACT OF THE DISCLOSURE A control system, for a motor which may be subjected to installing loads, provides a non-linear increase in motor current during stalling conditions to maintain rated horse- power. When the maximum transient overload current is reached, this current is maintained to keep the motor torque at a maximum until the motor is stalled. This provided maximum motor torque down to a stalled condition and resists stalling. A limit controller determines the maximum time a particular overload motor current can be maintained and when this time has passes the motor current is reduced to rated current. If the motor should stall completely a further reduction in motor current is made automatically.

265450

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