Electronic device for starting a synchronous motor with permanen

Details Electronic device for starting a synchronous motor with permanen Electronic device for starting a synchronous motor with permanen

1993-06-03

1995-07-18

Martin, David S.

Electricity: motive power systems

Synchronous motor systems

318716, H02P 528

Patent

active

054344913

ABSTRACT:
Device for starting a synchronous motor with a permanent-magnet rotor, particularly with two stator poles and two rotor poles, including a static power switch, a triac, arranged in series between the stator winding of the motor and the alternating-voltage source at mains frequency. The triac is controlled by an electronic circuit which processes three factors, namely the current flowing through the coil of the synchronous motor, the position and polarity of the permanent magnet of the rotor, and the polarity of the alternating-voltage source.

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Patent Abstracts of Japan-vol. 11, No. 88 (E-490) 18 Mar. 1987 & JP-A-61240868 (Matsushita Seiko Co. Ltd) 27 Oct. 1986.

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