Power control system and method

• US 20090212747A1
• Filed: 04/23/2009
• Published: 08/27/2009
• Est. Priority Date: 04/03/2006
• Status: Active Grant

• Current Assignee: James Becker
• Original Assignee: James Becker
• Inventors: Becker, James
• Granted Patent: US 7,804,181 B2
• Time in Patent Office: Days
• US Class Current: 322/29
• CPC Class Codes: F02D 29/06 peculiar to engines driving electric generators
• CPC Class Codes: H02P 2101/30 for aircraft
• CPC Class Codes: H02P 29/0016 Control of angular speed of one shaft without controlling the prime mover
• CPC Class Codes: H02P 9/102 for limiting effects of transients
• CPC Class Codes: H02P 9/26 using discharge tubes or semiconductor devices H02P9/34 takes precedence
• CPC Class Codes: H02P 9/30 using semiconductor devices

Abstract

This invention discloses a power control system comprising a prime mover and a generator driven by the prime mover. A control device is coupled with the generator to ascertain a change in speed of the generator and vary an output power of the generator according to the change. The control device applies a signal to reduce the generator output power and another signal to restore the generator output power. The power control system may include a transmission, a speed converter, and/or an accessory.

Claims

1. A control device for a generator, said generator comprising a shaft driven at a speed, a generator output power controller capable of manipulating an output power of the generator, and a generator speed indicator capable of generating a signal indicative of the generator speed, said control device comprising:

a processor, including a programming code operable on the processor, coupled with the generator output power controller and the generator speed indicator;

wherein said processor is configured to sense two consecutive speeds a pre-determined time interval apart and determine a difference between the speeds to arrive at a rate of change in speed, via a first line, and to vary the output power of the generator by applying a speed-control signal to the generator output power controller, via a second line, according to said rate of change.

72. A method for controlling a generator, said generator comprising a shaft driven at a speed, a generator output power controller capable of manipulating an output power of the generator, and a generator speed indicator capable of generating a signal indicative of the generator speed, said method comprising:

(a) measuring two consecutive speeds a pre-determined time interval apart and determining a difference between the speeds to arrive at a rate of change in speed, via a first line; and

(b) varying the output power of the generator by applying a speed-control signal to the generator output power controller, via a second line, according to said rate of change.