DSP Chip-based excitation controller communication system and its method for realizing USB protocol

Abstract

Characters of the method are that core processor is based on TMS32OF2812 chip in high performance; USB communication control chip is prepared from flexible CH375; man-machine interface is configured from abundant functional application software of device in upper layer. Digital signal processing chip and the application software realize each function including implementation for continuous exhaustive recording change of voltage and current in system oscillation, abrupt change of system frequency, and systems dynamical procedure caused by each broken fault in generator. Report of reliability of current operating state can be obtained directly through analyzing real time voltage-current curve by analysis software.

Description

(1) Technical field: [0001] The invention belongs to the field of motor automation, in particular to a DSP chip-based excitation controller communication system and a method for realizing the USB protocol. (2) Technical background [0002] Motor automation control is an important field of power system automation, which has an important impact on the operation of the entire power system. The excitation control device with good performance can not only ensure the reliability and stability of generator operation, but the current generator control theory mostly adopts linear control theory, the core structure is mostly 8-bit or 16-bit single-chip microcomputer, and the communication interface is mostly RS232 serial communication. The generator itself is a nonlinear system, so the nonlinear control effect is often unsatisfactory. On the one hand, the reason here is that the core structure used is mostly a single-chip microcomputer, and the operation speed and precision are limite...

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Problems solved by technology

The excitation control device with good performance can not only ensure the reliability and stability of the generator operation, but the current generator control theory mostly adopts the linear control theory, the core structure is mostly 8-bit or 16-bit single-chip microcomputer, and the communication interface is mostly RS232 serial communication. The generator itself is a nonlinear system, so the nonlinear control effect is often unsatisfactory. On the one hand, the reason here is that the core structure used is mostly a single-chip microcomputer, and the operation speed and precision are limited. In addition, the time delay of the peripherals makes it difficult Realize various complex control theories. On the other hand, because the original excitation controller communication system mostly uses RS232, the speed is limited, the protocol is simple, and it is difficult to realize complex transmission functions, so that the means of monitoring and analyzing the operating status of the generator are limited. , thereby degrading the operating performance of the generator

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