中圖分類號： TM133 文獻標(biāo)識碼： A DOI：10.16157/j.issn.0258-7998.211590 中文引用格式： 王蓓蓓,，張良,，武丹，等. 基于NTC熱敏電阻的溫度實時在線監(jiān)測技術(shù)研究[J].電子技術(shù)應(yīng)用,，2022,，48(2)：107-110. 英文引用格式： Wang Beibei，Zhang Liang,，Wu Dan,，et al. Research on real-time on-line temperature monitoring technology based on NTC thermistor[J]. Application of Electronic Technique，2022,，48(2)：107-110.
Research on real-time on-line temperature monitoring technology based on NTC thermistor
Wang Beibei1,，2,，Zhang Liang1，2,，Wu Dan1,，2，Dong Liang1,，2,，Zhang Jialin1，2
1.China EPRI Electric Power Engineering Co.,，Ltd.,，Beijing 102200，China,； 2.Beijing DC Transmission & Distribution Engineering Technology Research Center,，Beijing 102200，China
Abstract： For semiconductor devices, such as IGBT,，the high junction temperature will seriously affect the operation characteristics, and such affect the reliability of power electronic devices constructed by them. The real-time on-line temperature monitoring technology based on NTC thermistor is proposed in this paper. By using the negative temperature coefficient(NTC) thermistor integrated inside IGBT module, temperature signals are converted to frequency signals and transferred to the logic processing chip(CPLD) via fiber isolation. The temperature is displayed in real time on computer after logic processing. It has the advantages of high reliability and accurate display. Finally, an engineering prototype of real-time on-line temperature monitoring technology is built to verify the effectiveness of this technology by testing the frequency values at different temperatures under the experiment of the power electronic device.
Key words : negative temperature coefficient thermistor,；IGBT junction temperature；voltage and frequency conversion,；real-time mon- itoring,；power electronic device
