Apparatus for providing an electrical generator with a constant rotational speed from a variable speed input

Patent · Tue Oct 04 00:00:00 EDT 1988

OSTI ID:6447198

Murrell, P W; Calverley, J; Williams, D; Thomas, D J

This patent describes an electrical generator drive having a power source which is able to transmit power at a rotational speed subject to progressive and stepwise speed changes, an electrical generator which requires a rotational input of power at a substantially constant speed, and a controllable drive transmission of high rotational inertia coupling together the power source and the electrical generator. The drive transmission consists of: an epicyclic gear having an input member which is arranged to be driven by the power source, an output member coupled with the electrical generator, and a reaction member; monitoring means arranged to respond to fluctuations from a predetermined value in the rotational speed of the output member; and control means including a hydraulic pump/motor unit coupled with the reaction member and controllable by the monitoring means in order to vary the relative rotation between the reaction member and the other members of the epicyclic gear so as to maintain a substantially constant predetermined speed of the output member; in which: the monitoring means includes an electrical control unit having a memory storable with a predetermined value corresponding to the predetermined speed of the output member, means for feeding to the control unit an input signal which represents the actual speed of the output member and which the control unit compares with the predetermined speed of the output member.

• Assignee: Vickers Shipbuilding and Engineering Limited
• Patent Number(s): US 4774855
• OSTI ID: 6447198
• Resource Relation: Patent File Date: Filed date 15 Jan 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING
ELECTRIC GENERATORS
DESIGN
VEHICLES
ANGULAR VELOCITY
CONTROL EQUIPMENT
ELECTRIC MOTORS
GEARS
MECHANICAL TRANSMISSIONS
MONITORS
PUMPS
EQUIPMENT
MACHINE PARTS
MEASURING INSTRUMENTS
MOTORS
VELOCITY
330600* - Advanced Propulsion Systems- Vehicle Design Factors
420800 - Engineering- Electronic Circuits & Devices- (-1989)