Hybrid motor starter

Details Hybrid motor starter Hybrid motor starter

1977-04-25

1978-07-11

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318230, 318398, 318416, H02D 540

Patent

active

041004698

ABSTRACT:
Both solid state static control devices and electromagnetically operated contactors are employed in an a-c motor starter. The solid state control devices are operated by an acceleration control circuit to accelerate the motor during start-up. When synchronous speed is achieved, a run contactor is energized and its contacts are closed to conduct motor current. Under steady state conditions, therefore, the solid state control devices are bypassed.

REFERENCES:
patent: 2663834 (1953-12-01), Large et al.
patent: 3045163 (1962-07-01), Collum
patent: 3143694 (1964-08-01), Chiasson
patent: 3573580 (1971-04-01), Shinozaki
patent: 3652924 (1972-03-01), Dieterich et al.
patent: 3742370 (1973-06-01), Hansen
patent: 4015178 (1978-03-01), Phillot et al.

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