Controllable flux permanent magnet motor

Details Controllable flux permanent magnet motor Controllable flux permanent magnet motor

1998-06-22

2000-02-15

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, 310261, 310 49R, H02K 2112

Patent

active

060256664

ABSTRACT:
A permanent magnet motor employing sets of divided magnets on the surface of the rotor enables stator current to be used to control the net flux in the stator teeth, yoke and airgap. Each set of divided magnets circumscribes a respective portion of an arc of 360.degree. about the center of the rotor and is made up of a subset of a number of successive south (S) magnet polarities and a subset of an of successive north (N) magnet polarities arranged such that each subset about the 360.degree. arc is of opposite polarity to the adjacent subset at either side. This enables terminal voltage to be kept constant as speed increases, but with less current than in the case of conventional surface magnet motors.

REFERENCES:
patent: 4562399 (1985-12-01), Fisher
patent: 4712028 (1987-12-01), Horber
patent: 5548172 (1996-08-01), Kliman et al.

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