Magnetic bearing apparatus with radial position correcting elect

Details Magnetic bearing apparatus with radial position correcting elect Magnetic bearing apparatus with radial position correcting elect

1997-01-30

2000-02-08

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 524, F04D 2904

Patent

active

060231157

ABSTRACT:
To prevent the problem of dragging on an auxiliary bearing which tends to occur in a motor in the vicinity of a resonance point of rigid mode during the start-up of a three axis control magnetic bearing apparatus, a radial position correcting electromagnet is provided. The radial position correcting electromagnet has a magnetic pole extending in the direction of a radius of a metal disc of the motor through which the motor shaft passes. A voltage having a short period is applied to the radial position correcting electromagnet at a plurality of times in the vicinity of the resonance point of rigid mode upon start-up of the motor to attract the metal disc and thereby adjust the radial position of the shaft to prevent excessive contact between the shaft and other parts of the three axis control magnetic bearing apparatus.

REFERENCES:
patent: 3650581 (1972-03-01), Boden et al.
patent: 4128795 (1978-12-01), Habermann et al.
patent: 4568865 (1986-02-01), Welburn
patent: 4609332 (1986-09-01), Miki et al.
patent: 4697128 (1987-09-01), Matsushita et al.
patent: 4885491 (1989-12-01), Hiyama et al.
patent: 4963804 (1990-10-01), Geiger
patent: 4999534 (1991-03-01), Andrianos
patent: 5107192 (1992-04-01), Kirchberg et al.
patent: 5256952 (1993-10-01), Yoneyama et al.
patent: 5355042 (1994-10-01), Lewis et al.
patent: 5408875 (1995-04-01), Matsushita et al.
patent: 5576587 (1996-11-01), Takahashi et al.
Translation of JP 60-256620 (Murakami et al.).

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