电工技术学报  2021, Vol. 36 Issue (12): 2535-2547    DOI: 10.19595/j.cnki.1000-6753.tces.L90451
先进功率半导体器件及其封装、集成与应用专题(特约主编:王来利 教授) |
基于量化电压并行比较的IGBT状态监测保护电路
黄先进, 李鑫, 刘宜鑫, 王风川, 高冠刚
北京交通大学电气工程学院 北京 100044
Condition Monitoring and Protection Circuit for IGBTs Based on Parallel Comparison Methods of Quantized Voltages
Huang Xianjin, Li Xin, Liu Yixin, Wang Fengchuan, Gao Guangang
School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China
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摘要 在中高压、大容量电力电子变流系统中,大功率IGBT模块是变流器的核心器件,而驱动电路是影响IGBT模块及其组成的变流系统运行可靠性的关键因素。已有研究表明,对于IGBT模块的突发故障与老化失效,通过驱动电路进行状态监测与保护是目前能够对其实现故障诊断最快的方法。因此,该文提出一种基于量化电压并行比较的IGBT状态监测保护电路。首先,建立IGBT模块等效电路模型,分析模块内部寄生参数对饱和导通压降Vce(sat)、短路电流Isc、开通延迟时间tdon及门极峰值电流Igpeak等状态参数的影响,利用其在不同老化程度下的变化范围构建IGBT模块的全寿命安全工作区,为量化电压设定提供依据。其次,以Vce(sat)tdon作为采集对象,设定特定阈值,对检测信号进行量化,根据比较电路的逻辑输出实时监测并辨别短路故障与老化程度,从而保护IGBT模块。最后,利用Pspice进行仿真分析,验证了该方法的正确性与可行性。
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黄先进
李鑫
刘宜鑫
王风川
高冠刚
关键词 状态监测量化电压全寿命安全工作区驱动电路    
Abstract:The high-power insulated gate bipolar transistor (IGBT) module is a key component in the medium-high voltage and large-capacity power electronic converter system, while the existing gate driver is a critical factor influencing the performance of the IGBT module and converter system. Literature about the reliability of IGBT revealed that the condition monitoring and protection by gate drivers for the random failure and wear-out failure is currently the only way to achieve the fastest fault diagnosis on packaged IGBT modules at a low cost. Hence, this paper presents the condition monitoring and protection circuit based on parallel comparison of quantized voltages. Firstly, this paper analyzes the parasitic parameters' effects on saturated on-state voltage drop Vce(sat), short-circuit current Isc, turn-on delay time tdon and gate peak current Igpeak using the equivalent circuit of high-power IGBT module. Based on the variation range under different aging degrees, the life cycle safe operating area is established to provide a basis for quantized voltage setting. Then, taking Vce(sat) and tdon as the detection signals, the proposed monitoring circuit and control scheme are introduced. The detection signals are quantized by setting several specific thresholds, and the multiple-comparator circuit's logic output signals are used to judge short-circuit faults and degradation degree of the IGBT module in real time. Finally, the feasibility and correctness of the proposed method are verified by Pspice simulation.
Key wordsCondition monitoring    quantized voltage    life cycle safe operating area    gate driver   
收稿日期: 2020-07-11     
PACS: TM46  
基金资助:中央高校基本科研业务费资助项目(2019JBM063)
通讯作者: 李 鑫, 男,1995年生,硕士研究生,研究方向为IGBT驱动保护电路等。E-mail: 18121470@bjtu.edu.cn   
作者简介: 黄先进,男,1980年生,博士,副教授,博士生导师,研究方向为变流器控制与设计、半导体功率器件特性与应用等。E-mail:xjhuang@bjtu.edu.cn
引用本文:   
黄先进, 李鑫, 刘宜鑫, 王风川, 高冠刚. 基于量化电压并行比较的IGBT状态监测保护电路[J]. 电工技术学报, 2021, 36(12): 2535-2547. Huang Xianjin, Li Xin, Liu Yixin, Wang Fengchuan, Gao Guangang. Condition Monitoring and Protection Circuit for IGBTs Based on Parallel Comparison Methods of Quantized Voltages. Transactions of China Electrotechnical Society, 2021, 36(12): 2535-2547.
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