Starting system for an electrically-compensated constant speed d

Details Starting system for an electrically-compensated constant speed d Starting system for an electrically-compensated constant speed d

1986-12-23

1987-09-29

Shoop, Jr., William M.

Prime-mover dynamo plants

Plural prime mover

Plural prime movers with fluid interconnection

290 38R, F02N 1104

Patent

active

046970908

ABSTRACT:
Prior generating systems utilizing electrically-compensated constant speed drives (ECCSD) have typically required a separate starter motor for starting a prime mover which supplies motive power to the ECCSD, thereby increasing the size and weight of the system. In order to overcome this problem, a generating system is provided with circuitry coupled to the electrical power windings of a permanent magnet machine (PMM) forming a part of the ECCSD for causing the PMM to develop motive power which causes an output shaft of a differential of the ECCSD to rotate at increasing speeds. When the output shaft of the differential reaches a predetermined speed, a generator coupled to the output shaft of the differential is supplied external or ground power which in turn causes the generator to operate as a motor and return motive power through the differential to the prime mover to start same and bring it up to operating speed.

REFERENCES:
patent: 3809914 (1974-05-01), Kilgore et al.
patent: 4456830 (1984-06-01), Cronin
patent: 4481459 (1984-11-01), Mehl et al.
patent: 4488053 (1984-12-01), Cronin
patent: 4572961 (1986-02-01), Borger

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