Electrical power stabilisation

Patent 7521901 Issued on April 21, 2009. Estimated Expiration Date:

September 5, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Load peak shaver power regulating system
Patent #: 4001666
Issued on: 01/04/1977
Inventor: Grenfell

Self-regulating energy storage system
Patent #: 4617507
Issued on: 10/14/1986
Inventor: Eisenhaure , et al.

Gas turbine engine driven auxiliary electric power unit with turbine speed controlled in response to generator output current
Patent #: 5635768
Issued on: 06/03/1997
Inventor: Birch, et al.

Transformerless 3 phase power inverter
Patent #: 6404655
Issued on: 06/11/2002
Inventor: Welches

Microturbine/capacitor power distribution system
Patent #: 6639328
Issued on: 10/28/2003
Inventor: Wacknov

Turbogenerator with electrical brake
Patent #: 6784565
Issued on: 08/31/2004
Inventor: Wall, et al.

Power generation system having transient ride-through/load-leveling capabilities
Patent #: 6787933
Issued on: 09/07/2004
Inventor: Claude, et al.

Flywheel with switched coupling regulator
Patent #: 6788029
Issued on: 09/07/2004
Inventor: Gabrys

Distributed power system
Patent #: 6812586
Issued on: 11/02/2004
Inventor: Wacknov, et al.

Flywheel energy storage system
Patent #: 6819012
Issued on: 11/16/2004
Inventor: Gabrys

More ...

Inventors

Assignee

Rolls-Royce PLC

Application

No. 11514949 filed on 09/05/2006

US Classes:

322/10WITH PHYSICAL STARTING AND/OR STOPPING OF THE GENERATOR

Examiners

Primary: Ponomarenko, Nicholas
Assistant: Cuevas, Pedro J

Attorney, Agent or Firm

International Classes

H02P 3/00
H02P 9/06
H02P 15/00
H02P 9/04
H02K 7/02
H02K 7/18
F01D 15/10
F02C 6/00

Abstract

Use of a common electrical power bus to which a number of electrical power generators and consumers are coupled is well known. Typically, a high electrical capacitance is provided across the bus in order to provide stabilisation in the switching of generators and consumer devices as well as differences in the operational performances of the electrical power generators. Particularly in aerospace applications provision of high capacity electrical capacitors creates problems. By providing a feedback control and an electrical power converter take primary electrical power from an electro-mechanical converter associated with a rotating component of a prime mover, electrical power stabilisation is achieved by applying torque changes through the electromechanical converter to the rotating component of the prime mover such that stored electrical power can then be drawn as required to accommodate transients in electrical power on the bus.