Multiple magnetic paths machine

Details Multiple magnetic paths machine Multiple magnetic paths machine

1989-04-27

1990-12-25

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310208, H02K 122

Patent

active

049805959

ABSTRACT:
Separate multiple flux paths for an electrical generator or motor are provided in a single rotor machine by axially mounting a plurality of pole structures on the rotor shaft. Each pole structure includes a pair of interleaved claw-type pole pieces forming each separate path, with an excitation source sandwiched between the pole pieces. The excitation source in at least one of the pole structures comprises a non-magnetic sleeve mounted on a shaft of the rotor between the pole pieces and an annular permanent magnet mounted on the sleeve. The excitation source in at least one other of the pole structures comprises a permeable core mounted on the rotor shaft between the pole pieces and a conductive coil encircling the core.

REFERENCES:
patent: 769090 (1904-08-01), Johnson
patent: 3132272 (1964-05-01), MacFarlane
patent: 3183387 (1965-05-01), Wasynczuk
patent: 3206623 (1965-09-01), Snowdon
patent: 3252025 (1966-05-01), Brown
patent: 3305740 (1967-02-01), Shano
patent: 3423619 (1969-01-01), Shaw
patent: 3452228 (1969-06-01), Wolley
patent: 3553511 (1971-01-01), Hemmings
patent: 3555327 (1971-01-01), Terry
patent: 3571637 (1971-03-01), Henningsen
patent: 3646376 (1972-02-01), Anderson
patent: 4110642 (1978-08-01), Thiele
patent: 4614889 (1986-09-01), Ikegami

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