| 基于混合七电平电压型逆变器的新型6kV变频器 |
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| 引用本文： | 刘文华,陈远华,宋强,李建国. 基于混合七电平电压型逆变器的新型6kV变频器[J]. 中国电力, 2005, 38(8): 10-14 |
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| 作者姓名： | 刘文华 陈远华 宋强 李建国 |
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| 作者单位： | 清华大学,电机工程与应用电子技术系,北京,100084 |
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| 摘 要： | 提出了一种基于混合七电平电压型逆变器的6kV变频器。混合七电平逆变器由1个采用10CT的三相中点箝位三电平逆变器和3个采用IGBT的H桥逆变器串联而成，可充分利用IGCT高压大容量及IGBT高速的特点。PWM控制采用基于参考电压分解的多电平直接PWM算法。数字化实现容易。采用了改进的死区效应补偿方法以获得理想的输出波形。研制了1台基于混合七电平逆变器的交流380V变频调速实验样机。实验结果为新型6kV变频器工业装置的研制打下了基础。
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| 关 键 词： | 高压变频器 IGCT PWM控制 混合多电平逆变器 |
| 文章编号： | 1004-9649(2005)08-0010-05 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-06-11 |
New 6 kV drive based on hybrid 7-level voltage sourced inverter |
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| LIU Wen-hua,CHEN Yuan-hua,SONG Qiang,LI Jian-guo. New 6 kV drive based on hybrid 7-level voltage sourced inverter[J]. Electric Power, 2005, 38(8): 10-14 |
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| Authors: | LIU Wen-hua CHEN Yuan-hua SONG Qiang LI Jian-guo |
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| Abstract: | A 6 kV drive based on hybrid 7-level Voltage Sourced Inverter (VSI) was proposed. Hybrid 7-level VSI is composed of a NPC three-level VSI employing IGCTs and three H-bridge VSI employing IGBTs, it can fully use the high capacity and voltage of IGCT and the high switching speed of IGBT. A multilevel direct PWM control strategy based on reference voltage decomposition suitable for digital implementation was employed. A modified dead time compensation method was used to obtain better output voltage waveforms. An experimental drive system based on hybrid 7-level inverter was developed. Various experimental results laid the foundation for the development of the new industrial drive. |
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| Keywords: | MVD IGCT PWM hybrid multilevel inverter |
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