Motor non-linear excitation control device based on DSP chip

An excitation control, nonlinear technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of affecting the response speed and accuracy of excitation control, restricting the popularization and application of advanced control theory, and the control effect cannot be impressive. Satisfaction and other issues, to achieve good adjustment performance and reliability, enhance stability, and reduce control hysteresis

Inactive Publication Date: 2004-11-10
中国石化集团天津石油化工公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The automatic control device has an important influence on the operation status of the generator. The excitation control device with good performance can not only ensure the reliability and stability of the generator operation, but also improve the economy of the power system operation. At present, on the one hand, the Generator excitation control devices are mostly designed according to linear control theory, which is called "linear control device". Since the generator is a nonlinear element, the control effect of "linear control device" is not satisfactory; Excitation control realized by using traditional single-chip microc...

Method used

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  • Motor non-linear excitation control device based on DSP chip
  • Motor non-linear excitation control device based on DSP chip
  • Motor non-linear excitation control device based on DSP chip

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Embodiment 1

[0037] Embodiment 1: a kind of digital motor nonlinear excitation control device based on DSP chip (see figure 1 ) is characterized in that it uses the latest high-performance motor control DSP chip TMS320F2812 from Texas Instruments as the central processor, and the programmable logic device as the auxiliary processor. Amplifying circuit, thyristor power circuit and switching value control circuit, the input end of the said AC sampling circuit is connected to an external transformer or current transformer, its output end is connected to the input end of the central data processing circuit, and the output end of the central processing circuit Connect the pulse amplifying circuit and the switching value control circuit respectively, the output end of the pulse amplifying circuit is connected with the thyristor power circuit, the output end of the thyristor power circuit is connected with the input end of the excitation winding of the generator, and the switching amount control c...

Embodiment 2

[0063] Embodiment 2: said whole set of control device can be by stand-alone structure (i.e. figure 1 ) independent structure, and can also be transformed into a dual-machine structure for mutual hot standby to ensure the high reliability of large-capacity generator sets. There is a dual-port random access memory for communication between the two-machine structures to facilitate synchronous tracking, and other circuits are the same as those of the single-machine structure. Each circuit (see figure 2 ).

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Abstract

The invention is a DSP-based machine nonlinear excitation control device, and its character: it uses machine control special DSP chip as CPU and PLD as auxiliary processor, and consists of AC sampling circuit, CPU, pulse amplifying circuit, controlled silicon power circuit and switching quantity control circuit. It uses high-performance DSP chip to implement multiple generator excitation control laws of multiple generators relying mainly on nonlinear control and can largely enhance the speed and precision of excitation control, reduce control delay, making the whole system of excitation control have very good adjusting performance and reliability, enhancing network stability, assuring safety working of generator, reducing large-area power failure rate, and it is a new-generation generator excitation auto-control device with a huge market prospect.

Description

(1) Technical field: [0001] The invention belongs to the technical field of motor automatic control, in particular to a non-linear excitation control device for a motor based on a DSP chip. (two) background technology: [0002] The automatic control device has an important influence on the operation status of the generator. The excitation control device with good performance can not only ensure the reliability and stability of the generator operation, but also improve the economy of the power system operation. At present, on the one hand, the Generator excitation control devices are mostly designed according to linear control theory, which is called "linear control device". Since the generator is a nonlinear element, the control effect of "linear control device" is not satisfactory; Excitation control realized by using traditional single-chip microcomputers, such as 51 series and 96 series, due to the limited calculation accuracy and speed, coupled with the time delay of the t...

Claims

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Application Information

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IPC IPC(8): G05B13/00H02P9/14
Inventor 李希宏张宝华李成伟陈卡佳马幼捷何彦民周雪松
Owner 中国石化集团天津石油化工公司
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