Brushless D.C. dynamoelectric machine with decreased magnitude o

Details Brushless D.C. dynamoelectric machine with decreased magnitude o Brushless D.C. dynamoelectric machine with decreased magnitude o

1986-08-11

1987-12-01

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310164, 310254, H02K 2114, H02K 116

Patent

active

047106670

ABSTRACT:
A dynamoelectric machine which may operate in a motor mode or a generator mode is described wherein substantially the entire magnetic circuit is provided by ferrite material. In one particular embodiment, hard ferrite permanent magnet segments are mounted on a rotor plate while soft ferrite magnet segments with electrical coil windings mounted thereon are provided in a stator spaced apart from the rotor by an air gap. Other embodiments of the concept are described. Provision is made for decreasing mechanical vibration and audible noise by decreasing the magnitude of pulsations of air gap flux.

REFERENCES:
patent: 4424463 (1984-01-01), Musil
patent: 4425521 (1984-01-01), Rosenberry, Jr. et al.
patent: 4549104 (1985-10-01), Nimura et al.
patent: 4563602 (1986-01-01), Nagasaka
patent: 4605874 (1986-08-01), Whiteley

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