| 消除偶次谐波的三电平NPC逆变器调制方法 |
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| 引用本文： | 刘斌,薛毓强. 消除偶次谐波的三电平NPC逆变器调制方法[J]. 电力系统及其自动化学报, 2011, 23(1): 80-85 |
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| 作者姓名： | 刘斌 薛毓强 |
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| 作者单位： | 福州大学电气工程与自动化学院,福州,350108 |
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| 摘 要： | 针对传统空间矢量脉宽调制(SVPWM)方法的矢量选取方案使得二极管箝位型(NPC)三电平逆变器输出电压产生偶次谐波的缺陷,提出了一种能消除偶次谐波的改进型矢量选取方案.该方案在分析传统SVPWM产生偶次谐波机理的基础上,通过改进SVPWM中各矢量的作用顺序,使得逆变器输出电压半波奇对称,从而达到消除偶次谐波、抑制中点电...
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| 关 键 词： | 偶次谐波消除 二极管箝位型三电平逆变器 矢量选取 空间矢量调制 半波奇对称 |
Even Order Harmonic Elimination Method of Three-level Neutral Point Clamped Inverter |
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| LIU Bin,XUE Yu-qiang. Even Order Harmonic Elimination Method of Three-level Neutral Point Clamped Inverter[J]. Proceedings of the CSU-EPSA, 2011, 23(1): 80-85 |
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| Authors: | LIU Bin XUE Yu-qiang |
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| Affiliation: | LIU Bin,XUE Yu-qiang(College of Electrical Engineering & Automation,Fuzhou University,Fuzhou 350108,China) |
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| Abstract: | To overcome the drawback of the conventional space vector pulse with modulation(SVPWM)method applied to neutral point clamped(NPC)three-level inverter,which produces even order harmonics in the inverter output voltages,a new SVPWM shceme was proposed.The even order harmonics can be eliminate and the neutral voltage drift is suppressed by rearranging the vectors in the propsed method.Furthermore,the 60°coordinate frame is introduced to alleviate the computation cost.Simulation results results verify the validity of the scheme. |
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| Keywords: | even order harmonic elimination neutral point clamped(NPC) three-level inverter vector selection space vector pulse with modulation(SVPWM) half wave odd symmetry |
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