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

Abstract

A voltage signal processing method of a high-voltage frequency converter and a measuring device, the voltage acquisition circuit adopts a resistance voltage division processing method, and is characterized in that: the voltage signal is collected by a resistance voltage division at both ends of the input and output of the high-voltage frequency converter, and respectively The collected voltage signal is sent to an input and output voltage detection device, after differential amplification, isolation and filtering of the conditioning circuit, signal conditioning such as digital processing and conversion processing is performed, and then the digital processing and conversion results after signal conditioning are sent to the The logic processor performs calculation and control; and the signal after the logic processor communicates with the main control board of the high-voltage frequency converter through optical fiber. The resistive voltage sampling circuit of the present invention solves the technical problems of large volume, large error and inaccurate control of the high-voltage transformer in voltage detection, and measures the input and output voltage of the frequency converter by means of resistance voltage division, which is small in size, low in cost and high in reliability .

Description

technical field [0001] The invention relates to a working method and device of an electrical component, in particular to a voltage signal processing method and a measuring device of a high-voltage frequency converter, which are mainly used for voltage signal processing of a high-voltage frequency converter. Background technique [0002] With the rapid development of the economy, energy has become a bottleneck restricting economic growth, and saving and reducing consumption has become a serious concern of the country and enterprises. The high-voltage frequency converter with ideal energy-saving effect and speed regulation performance has attracted great attention from government departments and high-energy-consuming enterprises, and frequency conversion has become the first choice for energy-saving products. [0003] In the current process of developing high-voltage frequency converters, the main test method for input and output voltages is through electromagnetic voltage tra...

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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