Electric synchronous motor

Details Electric synchronous motor Electric synchronous motor

1994-10-18

1995-09-05

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 45, 310156, H02K 122

Patent

active

054481236

ABSTRACT:
An electric synchronous motor having a stator (10) with electric windings (14) and a rotor (16) which comprises a spindle (20) and a magnetic core (22), wherein the core (22) is formed by a number of annular magnetic discs (21) piled on the spindle (20) and having a length-to-diameter ratio exceeding 3. The discs (21) are insulated electrically from each other by layers of an inorganic material (17), such as an aluminum foil layer which is oxidized on both sides, and are axially clamped between shoulders (23, 24) on the spindle (20) to a high prestress level for obtaining a high bending strength, i.e. a higher coefficient of elasticity, of the rotor (16) as a whole.

REFERENCES:
patent: 464026 (1891-12-01), Kammeyer
patent: 1894273 (1933-01-01), Hunziker
patent: 2877366 (1959-03-01), Carr
patent: 3482156 (1969-12-01), Porath
patent: 3659129 (1972-04-01), Pettersen
patent: 3909647 (1975-09-01), Peterson
patent: 4053801 (1977-10-01), Ray
patent: 4858304 (1989-08-01), Weldon
patent: 5091668 (1992-02-01), Cuenot et al.
patent: 5099160 (1992-03-01), Strozel

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