Motor non-linear excitation control device based on DSP chip

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...

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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 microcomputers, such as 51 series and 96 series, due to the limited calculation accuracy and speed, coupled with the time delay of the transmitter used to collect data in some devices, affects the further improvement of excitation control response speed and accuracy , which limits the promotion and application of some advanced control theories, it is difficult to better meet the needs of my country's large-area power system to further improve the stability of the power system and minimize large-scale power outages and effectively ensure the continuous reliability of power consumption for people's livelihood and economic development. sexual needs

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