Electromagnetic machine with at least one pair of concentric rin

Details Electromagnetic machine with at least one pair of concentric rin Electromagnetic machine with at least one pair of concentric rin

1997-04-02

1998-12-01

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310114, 310156, 310187, 310216, H02K 720, H02K 1744

Patent

active

058443410

ABSTRACT:
An electromagnetic machine which is suitable for use as a direct-drive, directly-coupled, mains electricity generator (14) to be driven by a low speed device such as a wind turbine (18), consists of one or more rotor rings (30) of many permanent magnets (40) of alternating polarity, with coaxial stator rings (28) of many laminated yokes (35), each yoke defining slots to locate coils (38). The yokes (35) and coils (38) form modules which are supported by beams (32) relative to the rotor rings (30). The rotor rings (30) may also be of modular construction. Manufacture and assembly are thereby simplified, and sub-harmonic magnetic flux components are suppressed.

REFERENCES:
patent: 2006172 (1935-06-01), Klappauf
patent: 4291235 (1981-09-01), Berger et al.
patent: 4476395 (1984-10-01), Cronin
patent: 4613779 (1986-09-01), Meyer
patent: 4691133 (1987-09-01), Mongeau
patent: 4866321 (1989-09-01), Blanchard et al.
patent: 4973386 (1990-11-01), Wust
patent: 5177388 (1993-01-01), Hotta et al.
patent: 5258697 (1993-11-01), Ford et al.

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