Axial force electrical machines

Details Axial force electrical machines Axial force electrical machines

1998-11-25

2000-12-26

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310190, 310191, 310192, 310195, 310209, H02K 1500

Patent

active

061664634

ABSTRACT:
The present invention resides in a radial air gap machine with a serrated air gap that can minimize external axial forces. This is accomplished by controlling the relationship between the air gap surfaces in the stator and rotor sections. To control the relationship between the stator sections and the rotor section in a vertical motor a bushing with external and internal thread of opposite hand with the internal thread having a steeper helix angle is twisted into a bearing mount and over a motor shaft. Thus, a vertical hollow shaft motor with magnetic balance thrust is adjusted.
In axial air gap machines, the magnetic force produced in the air gaps can also be utilized to compensate for axial loads.

REFERENCES:
patent: 4341969 (1982-07-01), Sievert
patent: 5302876 (1994-04-01), Iwamatsu et al.
patent: 5552653 (1996-09-01), Nose
patent: 5783890 (1998-07-01), Mulgrave
patent: 5834874 (1998-11-01), Krueger et al.

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