电磁搅拌电源IGBT结温检测系统研究与应用  

Research and Application of IGBT Junction Temperature Monitoring System for Electromagnetic Stirring Power Supply

作　　者：袁鹏 徐冬 邹志强 彭国强 陈浪 YUAN Peng;XU Dong;ZOU Zhiqiang;PENG Guoqiang;CHEN Lang(Hunan Zhongke Electric Co.,Ltd.,Yueyang 414000,China)

机构地区：[1]湖南中科电气股份有限公司,湖南岳阳414000

出　　处：《电工技术》2023年第14期108-111,114,共5页Electric Engineering

摘　　要：精准的逆变IGBT内核结温大小实时检测是连铸生产线上的电磁搅拌装置系统正常可靠长久运行的前提条件之一。首先分析了传统IGBT结温检测系统的特点以及各自适用场景,接着分析电磁搅拌专用变频电源中IGBT结温检测系统所应具备的条件,最后采用大功率IGBT自身内部携带的NTC热敏电阻传感器,并结合电压源采集处理电路和电流源传输处理电路优势,设计一种适用于大功率电磁搅拌专用变频系统的IGBT结温在线检测系统。该IGBT结温检测系统具有硬件电路简单、成本低、容易集成和电磁兼容性好的优点。试验和应用实践结果表明该系统满足大功率电磁搅拌电源系统对IGBT结温在线实时检测的性能需求,该系统已集成在国内某公司的电磁搅拌装置系统中。Accurate real-time monitoring of the core junction temperature of inverter IGBT is one of the preconditions for the normal and reliable long-term operation of electromagnetic stirring system in continuous casting production line.Firstly,the characteristics of traditional IGBT junction temperature detection systems and their respective application scenarios are analyzed.Then,the conditions of IGBT junction temperature detection system in the frequency conversion power supply for electromagnetic stirring are analyzed.Finally,combined with the advantages of voltage source acquisition and processing circuit and current source transmission processing circuit,an IGBT junction temperature online detection system suitable for high-power electromagnetic stirring special frequency conversion system is designed by using the NTC thermistor sensor carried by the high-power IGBT itself.This IGBT junction temperature detection system has the advantages of simple hardware circuit,low cost,easy integration and good electromagnetic compatibility.The experimental and practical results show that the system meets the performance requirements of online real-time detection of IGBT junction temperature for high-power electromagnetic stirring power systems.At present,the system has been integrated into the electromagnetic stirring device system of a domestic company.

关 键 词：电磁搅拌系统 NTC热敏电阻 IGBT结温 在线实时检测 

分 类 号：TM933.14[电气工程—电力电子与电力传动] B[哲学宗教]