Parallel Technique for IGBT Modules Applied in High-Power Converter
Wang Xuesong, Zhao Zhengming, Yuan Liqiang, Lu Ting
State Key Laboratory of Control and Simulation of Power System and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing 100084 China
Abstract：For large-current application and low cost, switching devices sometimes have to be connected in parallel in high power converter. In this paper, the theoretical analysis and experimental study of static current balancing and transient current balancing for IGBT paralleling application are presented. Moreover, the current sharing of IGBTs in parallel with thermal imbalance is focused and researched by experiments. An active gate control circuit which is based on adjusting the gate voltages and gate resistances, is proposed and verified by experiments. The application of four IGBTs connected in parallel is implemented based on the research of two parallel-connected IGBTs. The four parallel-connected IGBTs can work at over 2kA, which has been applied in a 315kW/380V converter prototype.
[1] Hideki M, Hiyazaki, Hideshi F, Shigeru S, et al. Neutral-point-clamped inverter with parallel driving of IGBTs for industrial applications[J]. IEEE Transactions on Industry Applications, 2000, 36(1): 146-151. [2] 乔尔敏, 温旭辉, 郭新. 基于IGBT并联技术的大功率智能模块研制[J]. 电工技术学报, 2006, 21(10): 90-93, 100. Qiao Ermin, Wen Xuhui, Guo Xin. Development of high power intelligent module based on paralleled IGBTs[J]. Transactions of China Electrotechnical Society, 2006, 21(10): 90-93, 100. [3] 赵宏涛, 吴峻, 常文森. 门极电压控制IGBT 并联时静态均流可行性研究[J]. 电力电子技术, 2007, 41(9): 101-103. Zhao Hongtao, Wu Jun, Chang Wensen. Research on the feasibility of balancing on-state current for paralleled IGBTs by controlling gate voltage[J]. Power Electronics, 2007, 41(9): 101-103. [4] Azar R, Udrea R, Wai Tang, et al. The current sharing optimization of paralleled IGBTs in a power module tile using a pspice frequency dependent impedance model[J]. IEEE Transactions on Power Electronics, 2008, 23(1): 206-217. [5] Hofer Noser, Karrer. Monitoring of paralleled IGBT/diode modules[J]. IEEE Transactions on Power Electronics, 1999, 4(3): 438-444. [6] Hofer P, Karrer N, Gerster C. Paralleling intelligent IGBT power modules with active gate-controlled current balancing[C]. 27th IEEE Power Electronics Specialist Conference, 1996, 2: 1312-1316. [7] Dominik Bortis, Juergen Biela, Johann. Kolar. Active gate control for current balancing of parallel- connected IGBT modules in solid-state modulators[J]. IEEE Transactions on Plasma Science, 2008, 36(5): 2632-2637. [8] Romeo Letor. Static and dynamic behavior of paralleled IGBT’s[J]. IEEE Transactions on Industry Applications, 1992, 28(2): 395-402 [9] Fink A, Torti R, Reinhardt N, et al. High-voltage IGBT switching arrays[J]. IEEE Transactions on Magnetics, 2009, 45(1): 282-287. [10] Sze M. Physics of Semiconductor Dvices[M]. New York: Murray Hill, 1981. [11] Wang R, Dunkley J, De Massa T, et al. Threshold voltage variations with temperature in MOS transistors[J]. IEEE Transactions on Electron Devices, 1971, 386-388. [12] Hu C, Chi M, Vikram P. Optimum design of power MOSFET’s[J]. IEEE Transactions on Electron Devices, 1984, 31(12): 1693-1700. [13] Kenneth B, David J B, Malcolm T. The optimization of on-resistance in vertical DMOS power devices with linear and hexagonal surface geometries[J]. IEEE Transactions on Electron Devices, 1984, 31(1): 75-80. [14] Mohamed D, Kenneth B. Optimization of breakdown voltage and on-resistance of VDMOS transistors[J]. IEEE Transactions on Electron Devices, 1984, 31(12): 1769-1773. [15] Xuesong Wang, Zhengming Zhao, Liqiang Yuan. Current sharing of IGBT modules in parallel with thermal imbalance[C]. IEEE Energy Conversion Congress and Exposition, 2010: 234-238. [16] 陈娜, 何湘宁, 邓焰, 等. IGBT开关特性离线测试系统[J]. 中国电机工程学报, 2010, 30(12): 50-55. Chen Na, He Xiangning, Deng Yan, et al. An off-line IGBT switching characteristics measurement system[J]. Proceedings of the CSEE, 2010, 30(12): 50-55. [17] 白华, 赵争鸣, 胡弦, 等. 三电平变频调速系统中直流预励磁试验研究[J]. 中国电机工程学报, 2006, 26(3): 159-163. Bai Hua, Zhao Zhengming, Hu Xian, et al. The experimental analysis of DC pre-excitation for 3-level inverter-motor system[J]. Proceedings of the CSEE, 2006, 26(3): 159-163 [18] 白华, 赵争鸣. 三电平高压大容量变频调速系统中的预励磁方案[J]. 电工技术学报, 2007, 22(11): 91-97. Bai Hua, Zhao Zhengming. Research on starting strategies in the three-level high voltage high power inverters[J]. Transactions of China Electrotechnical Society, 2007, 22(11): 91-97.
2012, Vol. 27 
