Brushless induction synchronous motor with two stators

Details Brushless induction synchronous motor with two stators Brushless induction synchronous motor with two stators

1992-08-11

1994-02-08

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310124, 310125, H02K 1600, H02K 2362

Patent

active

052851249

ABSTRACT:
An induction synchronous motor includes a unitary rotor having first and second pole type rotor cores, first and second stators, a voltage phase shifting means, and DC magnetic excitation circuits. Both of the rotor cores are mounted on a common rotor axis with a predetermined space between them. The first and second rotor windings are wound on the first and second rotor cores, respectively. A plurality of diodes is each connected in parallel between series-connection nodes of the first and second rotor windings. A plurality of rotor conductors is provided on the peripheries of and extend through the first and second rotor cores. A pair of short-circuit rings short-circuits both ends of the plurality of rotor conductors. The first and second stators surround the first and second salient pole type rotor cores, respectively, and have the same number of poles as the first and second rotor cores. The voltage phase shifting means selectively produces a phase difference of 0.degree. for starting and accelerating operations and 180.degree. for synchronous operation. The DC magnetic excitation circuits face the first and second salient pole type rotor cores, and have a different number of poles from the first and second stators.

REFERENCES:
patent: 3728564 (1973-04-01), De Rugeris
patent: 3757182 (1973-09-01), Chalmers et al.
patent: 3823357 (1974-07-01), Sapper
patent: 3916229 (1975-10-01), Litz et al.
patent: 4139790 (1979-02-01), Steen
patent: 4476408 (1984-10-01), Honsinger
patent: 4506181 (1985-03-01), Jones et al.
patent: 4785213 (1988-11-01), Satake
patent: 4945296 (1990-07-01), Satake

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