Apparatus and three phase induction motor starting and stopping

Details Apparatus and three phase induction motor starting and stopping Apparatus and three phase induction motor starting and stopping

1992-11-06

1994-08-23

Ip, Paul

Electricity: motive power systems

Induction motor systems

Primary circuit control

318779, 318809, 318805, H02P 540

Patent

active

053410807

ABSTRACT:
The first, second and third switches within the first, second and third phases of a three phase motor controller are selectively operated to control the both the starting torque and the stopping torque of the motor. A preselected time delay before operating the switches within the individual phases allows the starting torque and the stopping torque to be controlled over a wide range of operation.

REFERENCES:
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patent: 4636702 (1987-01-01), Hedges
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patent: 4723104 (1988-02-01), Rohatyn
patent: 4931715 (1990-06-01), Lee et al.
patent: 5003242 (1991-03-01), Liber
patent: 5136216 (1992-08-01), Wills et al.
patent: 5151642 (1992-09-01), Lombardi et al.
patent: 5151853 (1992-09-01), Tatara et al.
patent: 5153489 (1992-10-01), Unsworth et al.
patent: 5187419 (1993-02-01), DeLange

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