Prime-mover dynamo plants – Plural prime mover – Plural prime movers with fluid interconnection
Patent
1986-01-13
1987-09-15
Shoop, Jr., William M.
Prime-mover dynamo plants
Plural prime mover
Plural prime movers with fluid interconnection
290 4C, 290 1R, 322 28, 322 40, 310112, F02N 1108
Patent
active
046941878
ABSTRACT:
An electromechanical constant speed drive generating system is provided with a mechanical differential having first, second and third rotatable shafts, wherein the speed of the second shaft is equal to the speed of the first shaft multiplied by the first contant plus the speed of the third shaft multiplied by a second constant. The first shaft is coupled to an external engine and is driven at a variable speed ranging between predetermined lower and upper limits. A constant speed generator is connected to the second shaft for producing a constant frequency output. A power converter is electrically connected between the output of the constant speed generator and a variable speed dynamoelectric machine which is coupled to the third shaft, to transfer power between the output of the constant speed generator and the variable speed dynamoelectric machine, thereby controlling the speed of the dynamoelectric machine such that the speed of the second shaft remains substantially constant when the speed of the first shaft varies between the defined upper and lower speeds. The system can also be used to start the engine by operating the constant speed generator as a motor. Thus both start and generate modes of operation are possible.
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Ip Shik Luen Paul
Lenart R. P.
Shoop Jr. William M.
Westinghouse Electric Corp.
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