Signal processing method and measuring device for high-voltage frequency converter

Abstract

The invention discloses a signal processing method and a measuring device for a high-voltage frequency converter. A voltage collecting circuit adopts a resistance division processing mode and is characterized in that voltage signals of input and output ends of a high-voltage frequency converter are collected respectively in the resistance division mode; the collected voltage signals are sent into an input / output voltage detecting device, are subjected to differential amplification, isolation and filtering of a modulation circuit, and then subjected to signal modulation, such as digitalization, conversion and the like; the digitalization and conversion results obtained after the signal modulation are sent into a logic processor for operation and control; and the signals processed by the logic processor perform optical fiber communication with the high-voltage frequency converter through optical fibers. By adopting the resistance type voltage collecting circuit, the technical problem that a high-voltage mutual inductor has large volume, large error and inaccurate control can be solved in voltage detection; in addition, the resistance division mode is used for measuring input and output voltages of the frequency converter, the effects of small volume, low cost and high reliability are achieved.

Description

Technical field [0001] The present invention involves a working method and device of an electrical component. Specifically, it is a high -voltage inverter voltage signal processing method and measurement device, which is mainly used for voltage signal processing of high -voltage inverter. Background technique [0002] With the rapid development of the economy, energy has become a bottleneck restricting economic growth, and saving consumption reduction has become a serious concern for the country and enterprises.High -voltage inverters with ideal energy conservation effects and speed regulating performance have aroused high attention from government authorities and high -energy enterprises, and frequency conversion has become the first choice of energy -saving products. [0003] In the current development of high -voltage frequency frequency, the main test method of input and output voltage is performed by electromagnetic voltage transformers.This detection method has large volume...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to propose a high-voltage inverter input and output voltage with small volume, high reliability and high accuracy in view of the problems of large volume, large error and inaccurate measurement of the existing high-voltage inverter input and output voltage testing methods. Test method and device

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