| 三电平逆变器的点电压平衡控制 |
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| 引用本文： | 卫建荣,周伟.三电平逆变器的点电压平衡控制[J].黑龙江科技学院学报,2007,17(1):79-82. |
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| 作者姓名： | 卫建荣 周伟 |
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| 作者单位： | 西南交通大学,电气工程学院,成都,610030 |
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| 摘 要： | 为解决电压型逆变器中点电压不平衡问题,分析了中点钳位式(NPC)三电平逆变器的基本原理,介绍了三电平逆变器的SVPWM算法.根据正负小矢量对中点电位的影响提出了两种平衡中点电位的控制策略,并通过设定电压误差滞环把两者结合起来.仿真结果表明,该方法能有效约束三电平逆变器的中点电压.
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| 关 键 词： | 中点钳位 三电平逆变器 电压误差滞环 三电平逆变器 平衡控制 control strategy balancing 有效约束 方法 仿真结果 结合 滞环 电压误差 控制策略 影响 中点电位 小矢量 算法 SVPWM 基本原理 中点钳位式 分析 不平衡问题 |
| 文章编号： | 1671-0118（2007）01-0079-04 |
| 修稿时间： | 2006-07-252006-11-14 |
Neutral-point balancing control strategy for three-level neutral-point-clamped (NPC) inverter |
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| WEI Jianrong,ZHOU Wei.Neutral-point balancing control strategy for three-level neutral-point-clamped (NPC) inverter[J].Journal of Heilongjiang Institute of Science and Technology,2007,17(1):79-82. |
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| Authors: | WEI Jianrong ZHOU Wei |
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| Institution: | Electric Engineering Institute, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | To solve the unbalance due to neutral voltage in voltage-source inverter,this paper introduces the SVPWM algorism by analyzing the basic theory of three-level neutral-point-clamped(NPC)inverter.The paper presents two kinds of control strategies,based on the impact of the positive and negative space voltage vectors on neutral voltage,and discusses joining them through a hysteresis of voltage.The simulation results show that the strategy can keep the neutral voltage of three-level inverter within given limits. |
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| Keywords: | neutral-point-clamped three-level inverter hysteresis of voltage |
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