Method and apparatus for starting motors

Details Method and apparatus for starting motors Method and apparatus for starting motors

1997-06-17

2000-03-07

Martin, David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318786, H02P 142

Patent

active

060345039

ABSTRACT:
A method of reinstating a start winding is disclosed wherein the start winding is disconnected when the main winding motor current reaches a predetermined value, but is only reinstated when the start winding voltage has a predetermined relationship to the main winding motor current. The method uses a solid state induction motor starter circuit which requires little or no adjustment during the life of the motor.

REFERENCES:
patent: 4658195 (1987-04-01), Min
patent: 4687982 (1987-08-01), Palaniappan
patent: 4745347 (1988-05-01), Wrege et al.
patent: 4804901 (1989-02-01), Pertessis et al.
patent: 5559418 (1996-09-01), Burkhart
patent: 5973473 (1999-10-01), Anderson et al.

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