Thermal characteristics of high voltage and high current thyristor assembly
-
摘要: 晶闸管具有控制特性好、寿命长、噪声小等优点，目前在脉冲功率技术应用中，利用大功率晶闸管代替传统气体开关是研究趋势。晶闸管在高电压、大电流、重复频率工作条件下使用，需要对开关组件进行仔细的选型和组合。基于晶闸管的失效机理，对晶闸管组件在高电压、大电流、高di/dt，高du/dt、重复频率工作下的发热问题进行了理论分析、仿真计算和试验研究，对晶闸管组件在重复频率脉冲功率系统中的使用条件给出了理论依据。随着晶闸管工作电压、电流、频率增大，晶闸管的热损耗也越大，晶闸管的发热也越严重。为保证晶闸管安全稳定地工作，需要结温保持在安全范围内，不能长时间在重复频率下工作。Abstract: Thyristors have the advantages of good control characteristics, long life and low noise. At present, in the application of pulse power technology, the use of high-power thyristors instead of traditional gas switches is a research trend. Thyristors are used under high voltage, high current, and repetitive operating conditions, requiring careful selection and combination of switch components. Based on the failure mechanism of thyristors, the theoretical analysis, simulation calculation and experimental research on the heating of thyristor components under high voltage, high current, high di/dt, high du/dt and repetitive frequency are carried out. The use conditions of the thyristor components in repetitive frequency pulse power system thus have a theoretical basis. As the operating voltage, current, and frequency of the thyristor increase, the thermal loss of the thyristor increases and the heating of the thyristor becomes more serious. To ensure the safe and stable operation of the thyristor, the junction temperature needs to be kept within a safe range, and it cannot work at repetitive frequencies for a long time.
-
表 1 电传导参数和热传导参数对比
Table 1. Comparison of electrical conduction parameters and heat transfer parameters
electrical parameters thermal parameter voltage $U({\rm{V}})$ temperature difference $\Delta T({\rm{K}})$ current $i({\rm{A}})$ thermal power $P({\rm{W}})$ amount of charge $Q({\rm{C}})$ heat ${Q_{{\rm{th}}}}({\rm{J}})$ resistance $R(\Omega) $ thermal resistance ${R_{{\rm{th}}}}({\rm{K }}\cdot {{\rm{W}}^{ - 1}})$ capacitance $C({\rm{F}})$ heat capacity ${C_{{\rm{th}}}}{\rm{/(J }}\cdot{{\rm{K}}^{{\rm{ - 1}}}}{\rm{)}}$ 
下载: 导出CSV
表 2 晶闸管热阻抗参数
Table 2. Thyristor’s thermal impedance parameters
thermal resistance Rth/(K·W−1) heat capacity Cth/(J·K−1) 2.06 0.777 00 1.60 0.169 00 0.76 0.034 00 0.08 0.006 75
下载: 导出CSV
表 3 热等效电路仿真结果
Table 3. Simulation data of thermal equivalent circuit
voltage/kV maximum temperature difference/℃ stable temperature difference/℃ 3 71.9 9.13 4 292.7 37.35 5 484.6 61.55
下载: 导出CSV
表 4 热平衡壳温
Table 4. Heat balance shell temperature
voltage/kV duration/min initial shell temperature/℃ final shell temperature/℃ shell temperature rise/℃ minimum junction temperature/℃ maximum junction temperature/℃ single average temperature rise/℃ 3 1 20.8 23.2 2.4 32.30 95.1 0.008 0 3 3 22.0 26.2 4.2 36.33 99.1 0.004 7 3 5 23.0 30.2 7.2 39.33 102.1 0.004 8 4 1 22.2 27.1 4.9 64.45 319.8 0.016 3 4 3 24.7 35.5 10.8 72.85 328.2 0.012 0 5 1 23.4 29.9 6.5 91.45 514.5 0.021 7
下载: 导出CSV
-
[1] 尉健翔, 张金友. 散热对晶闸管使用寿命的影响[J]. 电子元器件应用, 2001(3):26-27. (Wei Jianxiang, Zhang Jinyou. Effect of heat dissipation on the service life of thyristors[J]. Electronic Components & Applications, 2001(3): 26-27 [2] 卢茨 J. 功率半导体器件: 原理、特性和可靠性[M]. 北京: 机械工业出版社, 2013.Lutz J.. Power semiconductor devices: Principles, characteristics and reliability[M]. Beijing: China Machine Press, 2013 [3] 蓝元良, 汤广福, 印永华, 等. 大功率晶闸管热阻抗分析方法的研究[J]. 中国电机工程学报, 2007(19):3-8. (Lan Yuanliang, Tang Guangfu, Yin Yonghua, et al. Research on thermal impedance analysis method of high power thyristor[J]. Proceedings of the CSEE, 2007(19): 3-8 [4] 杨俊, 汤广福, 曹均正, 等. HVDC阀晶闸管结温计算等效电路模型[J]. 中国电机工程学报, 2013, 33(15):156-163. (Yang Jun, Tang Guangfu, Cao Junzheng, et al. Equivalent circuit model for calculation of thyristor junction temperature of HVDC valve[J]. Proceedings of the CSEE, 2013, 33(15): 156-163 [5] 李皎明, 余岳辉, 白铁城, 等. 晶闸管的瞬态热阻抗及其结温温升的研究[J]. 微纳电子技术, 2001, 38(2):52-55. (Li Yuming, Yu Yuehui, Bai Tiecheng, et al. Study on transient thermal impedance of thyristor and its junction temperature rise[J]. Micronanoelectronic Technology, 2001, 38(2): 52-55 [6] 宋峰青. 高压变频器中晶闸管串联的均压问题[J]. 电气时代, 2004(12):138-138. (Song Fengqing. Voltage equalization problem of thyristor series in high voltage frequency converter[J]. Electric Age, 2004(12): 138-138 [7] 张适昌. 磁开关[C]//全国高功率粒子束文集: 第 5 卷. 绵阳: 中国粒子束加速器学会, 1995: 323-326.Zhang Shichang. Magnetic switch[C]//Prec of National High Power Particle Beam Collection: Volume 5. Mianyang: China Particle Beam Accelerator Society, 1995: 323-326 [8] Jiang J, Liu J, Liu M, et al. Design and construction of a±100 kV gas switch for linear transformer drivers[J]. IEEE Trans Dielectrics and Electrical Insulation, 2015, 22(2): 1292-1297. doi: 10.1109/TDEI.2015.7076833 [9] 陈旭. 高压脉冲晶闸管热特性研究[D]. 武汉: 华中科技大学, 2015.Chen Xu. Study on thermal characteristics of high voltage pulse thyristors[D]. Wuhan: Huazhong University of Science and Technology, 2015. [10] 董汉彬. 功率晶闸管的暂态热特性研究及应用[D]. 武汉: 华中科技大学, 2012.Dong Hanbin. Research and application of transient thermal characteristics of power thyristors[D]. Wuhan: Huazhong University of Science and Technology, 2012 -
点击查看大图
图(8) / 表(4)
计量
- 文章访问数: 2518
- HTML全文浏览量: 697
- PDF下载量: 109
- 被引次数: 0
