Alternator with exciting means arrangement

Details Alternator with exciting means arrangement Alternator with exciting means arrangement

2000-05-31

2001-12-25

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06800R, C310S180000

Reexamination Certificate

active

06333581

ABSTRACT:

PRIOR ART
The invention is based on an electrical machine, in particular a three-phase generator, as defined generically by the main claim. One such machine is known from U.S. Pat. No. 3,522,520, for example. The energy supply to the exciter system is very compactly embodied as a rotating repeater; that is, the primary and secondary windings of the repeater are located in solid stator and rotor parts, but as a result the weight of this exciter system is relatively high, which is a disadvantage, especially when the three-phase generator is installed in a motor vehicle.
ADVANTAGES OF THE INVENTION
The electrical machine of the invention as defined by the characteristics of the body of the main claim has the advantage of the prior art that the repeater for the exciter system is very compact in structure and light in weight; that a reduction in stray inductance and above all an optimization of the magnetic circuit or reduction of expenses is attained by means of difference soft, magnetic materials in the rotating and the stationary yoke.


REFERENCES:
patent: 3522520 (1970-08-01), Goldman
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patent: 4612486 (1986-09-01), Ban et al.
patent: 5770909 (1998-06-01), Rosen
patent: 30 34 735 A (1982-04-01), None
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patent: 33 34 950 A (1985-04-01), None
patent: 0 680 060 A (1995-11-01), None
patent: 2 521 766 A (1983-08-01), None

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