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Method and apparatus for controlling incentives

An exciter, excitation control technology, applied in the control system, control generator, control generator through magnetic field changes, etc., can solve the problem of generator derating, affecting active materials and cost, etc.

Active Publication Date: 2012-02-01
CUMMINS GENERATOR TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, generator de-rating is required, again impacting active material and cost

Method used

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  • Method and apparatus for controlling incentives
  • Method and apparatus for controlling incentives
  • Method and apparatus for controlling incentives

Examples

Experimental program
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Embodiment Construction

[0038] figure 1Components of a synchronous generator 1 are shown. The generator includes a main engine 2 , and the main engine 2 includes a main rotor 3 and a main stator 4 . The main rotor 3 is located on a shaft 5 driven by a prime mover, such as a diesel engine (not shown). The main rotor generates a magnetic field such that rotation of the main rotor relative to the main stator produces an AC output in the main stator windings.

[0039] The main rotor is magnetized by passing a DC current through the rotor windings. This DC current is generated by an exciter 6 comprising an exciter rotor 7 , an exciter stator 8 and a rotating diode 9 . An exciter rotor 7 is mounted on the shaft 5 and rotation of the exciter rotor 7 relative to the exciter stator 8 produces an AC output in the exciter rotor windings. This AC output is converted to DC by a rotary diode 9 and the DC output of the rotary diode is fed to the main rotor 3 .

[0040] exist figure 1 In an arrangement of , po...

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Abstract

Excitation control circuitry for a synchronous generator is disclosed. The synchronous generator is of a type comprising a main machine (2) and an exciter (6) for exciting the main machine. The excitation control circuitry comprises an automatic voltage regulator (10) for controlling power flow from the main machine to the exciter, and an excitation boost system (14) for selectively supplying power from a second source of electrical power (12) to the exciter (6). This can allow additional excitation to be provided, for example, when the generator is in overload. This arrangement can allow a synchronous generator to be upgraded by adding the excitation boost system to provide enhanced overload performance.

Description

technical field [0001] The invention relates to a method and a device for controlling excitation in a synchronous generator. Background technique [0002] Synchronous generators work by rotating the magnetic field generated by the rotor relative to the windings in the stator to produce an AC output in the stator windings. By passing a DC current through the windings in the rotor, the magnetic field of the rotor can be generated. This DC current can be generated by an exciter mounted on the shaft of the generator. An automatic voltage regulator (AVR) may be provided to control the exciter and thereby the current supplied to the rotor winding. [0003] Synchronous generators typically have a maximum load rating, which is the maximum load the generator can supply under steady state conditions. Additionally, specific applications may require generators with short circuit maintenance and / or enhanced overload capabilities. Applications requiring this include (among others) mar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/10H02P9/38
CPCH02P9/10H02P9/38H02P9/107
Inventor N·杰克曼M·J·赖特D·H·达尔比N·布朗
Owner CUMMINS GENERATOR TECH LTD