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| 三电平中点箝位型逆变器中点电压平衡和控制方法研究 | |
| 引用本文： | 胡存刚,王群京,严辉,杨益.三电平中点箝位型逆变器中点电压平衡和控制方法研究[J].电子测量与仪器学报,2009,23(6):74-81. |
| 作者姓名： | 胡存刚 王群京 严辉 杨益 |
| 作者单位： | 1. 合肥工业大学电气与自动化工程学院,合肥,230009 2. 合肥工业大学电气与自动化工程学院,合肥,230009;安徽大学电子科学与技术学院,合肥,230039 3. 安徽建筑工业学院电子与信息工程学院,合肥,230022 |
| 基金项目： | 安徽省“十一五”科技攻关(编号:06012143H)资助项目;;合肥工业大学科研发展基金(编号:GDBJ2008-046)资助项目 |
| 摘 要： | 建立了三电平中点箝位型逆变器中点电压的数学模型;分析了在不同的负载条件下,传统的最近三矢量合成方法中点电压存在不能平衡的区域;利用合成空间矢量的调制方法,实现了对中点电压的有效控制。为了在扇区切换时输出矢量平稳过渡,提出了在每个大区内全部采用相同首发小矢量的方法。用MATLAB/Simulink仿真研究了中点电压平衡控制的效果,并用MOSFET搭建了三电平逆变器实验电路模型,对中点电压平衡控制效果进行了验证。实验结果证明了基于合成空间矢量的三电平NPC逆变器中点电压平衡控制方法的有效性。 |
| 关 键 词： | 中点箝位型逆变器 空间矢量调制 中点电压平衡 合成空间矢量 |
Research on neutral-point potential balancing and control method for three-level NPC inverter |
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| Hu Cungang,Wang Qunjing,Yan hui,Yang Yi.Research on neutral-point potential balancing and control method for three-level NPC inverter[J].Journal of Electronic Measurement and Instrument,2009,23(6):74-81. | |
| Authors: | Hu Cungang Wang Qunjing Yan hui Yang Yi |
| Affiliation: | 1. Hefei University of Technology;Hefei 230009;China;2. Anhui University;Hefei 230039;3. Anhui Institute of Architecture & Industry;Hefei 230022;China |
| Abstract: | A significant problem with neutral-point-clamped three-level inverters is the fluctuation in the neutral-point voltage. The mathematics model of neutral-point potential is developed while the neutral-point potential is unbalanced. In this paper the limitations of neutral-point potential balancing problem for different loading conditions of three-level neutral-point-clamped inverters is explored. And a novel modulation approach for the complete control of the neutral-point potential is introduced. The new mo... |
| Keywords: | neutral point clamped inverter SVPWM neutral-point potential balancing synthetic-space-vector |
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