Two-pole single-phase synchronous motor with permanent-magnet ro

Details Two-pole single-phase synchronous motor with permanent-magnet ro Two-pole single-phase synchronous motor with permanent-magnet ro

1990-12-14

1992-06-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, 310254, 310 67R, H02K 1726

Patent

active

051189771

ABSTRACT:
The invention relates to a two-pole single-phase synchronous motor having a permanent-magnet rotor (11), a magnetic detent torque, which viewed over one revolution exhibits positive and negative values with resulting stable and unstable rest positions, the stable rest positions being offset in the positive direction relative to the average direction of the stator field (39) by the asymmetry angle (.gamma.), and a critical detent torque (M.sub.K1kr) being active in the parallel position of the stator field (9) and the rotor field (41), and a starting device provided with rotational backlash between a driving member connected to the rotor (11) and a load member, and with a directional blocking device (22).

REFERENCES:
patent: 4241270 (1980-12-01), Haydon et al.
patent: 4528533 (1985-07-01), Mantagu
patent: 4554471 (1985-11-01), Bertram et al.
patent: 4855629 (1989-08-01), Sato

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