Rotation angle switching device

Details Rotation angle switching device Rotation angle switching device

1992-09-10

1995-02-14

Wysocki, Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02P 602

Patent

active

053898621

ABSTRACT:
A rotation angle switching device includes an output shaft connected to a rotatable permanent magnet having pole pairs and a stator around which coils are wound. Three coils are provided for each pole pair. The coils are connected in three pairs star connection. A rotation angle position is selected for the permanent magnet by energizing a first two pairs of coils. When the device is initialized, such as in starting of power supply, after a second two pairs of coils have been energized for a predetermined period of time, a third two pairs of coils, which when energized cause the permanent magnet to move to an original rotation angle position, are energized.

REFERENCES:
patent: 3766456 (1973-10-01), Carow
patent: 4368411 (1983-01-01), Kidd
patent: 4510422 (1985-04-01), Ogura
patent: 4631457 (1986-12-01), Tanuma et al.
patent: 4654566 (1987-03-01), Erdman
patent: 4678973 (1987-07-01), Elliott et al.
patent: 4743815 (1988-05-01), Gee et al.
patent: 4814676 (1989-03-01), Van Hout
patent: 5034670 (1991-07-01), Tominaga

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