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Excitation control method and device

A technology of excitation control and control quantity, applied in the direction of controlling electromechanical transmission device, control system, control generator, etc., can solve the problem of unable to achieve ideal control effect and so on

Active Publication Date: 2017-10-13
CRRC DALIAN R & D CO LTD
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Problems solved by technology

[0004] The invention provides an excitation control method and device, which are used to solve the problem that the existing PID controller cannot achieve ideal control effects when the control system suffers from large disturbances or the control system changes operation modes

Method used

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  • Excitation control method and device
  • Excitation control method and device

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0026] figure 1 A schematic diagram of an excitation control method provided by an embodiment of the present invention. The executive body of the excitation control method provided in this embodiment may be an excitation control device, and the excitation control device may be used in an excitation control system in a power system. In this embodiment, the excitation control device is installed in a diesel locomotive to control the generator. The excitation control method will be described by taking the excitation control as an example.

[0027] like figure 1 As shown, the excitation control method provided by the embodiment of the present invention includes the following steps:

[0028] 101. Collect the voltage signal and the current signal output by the generator at the current moment and the reference voltage signal and the...

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Abstract

The invention provides an excitation control method and device. The method includes: collecting the voltage signal and current signal output by the generator at the current moment and the reference voltage signal and the reference current signal at the current moment; according to the voltage signal and the reference voltage signal and the current signal and the reference current signal , get the voltage error signal and current error signal at the current moment; obtain the voltage control quantity and current control quantity corresponding to the current moment; use the open-loop iterative learning law for the voltage control quantity and voltage error signal as well as the current control quantity and current error signal respectively , get the target voltage control quantity and target current control quantity at the next moment; select the minimum signal value of the target voltage control quantity and target current control quantity as the input control quantity; input the input control quantity to the generator for excitation control. The invention introduces the open-loop iterative learning law into the excitation control, so that the excitation control of the generator has better stability.

Description

technical field [0001] The present invention relates to vehicle control technology, in particular to an excitation control method and device. Background technique [0002] At present, the proportional-integral-derivative (PID) controller is mostly used in diesel locomotives to control the excitation of the generator, so as to limit the voltage and current output of the generator, and limit the current output of the generator to provide the internal combustion engine with Relatively stable voltage and current, and the output power of the control generator can be maintained in a constant state, so that the control system of the diesel locomotive can have better steady-state performance. [0003] However, the control system is a large-scale strong nonlinear system with changeable structure. The PID controller designed by using the local linearization method cannot achieve the ideal control effect when the control system suffers from large disturbances or when the control system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00
Inventor 赵立超董笑辰任宝兵
Owner CRRC DALIAN R & D CO LTD
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