| 一种SPWM控制的多电平逆变器电压误差补偿策略 |
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| 引用本文： | 李世平,李擎,李华德.一种SPWM控制的多电平逆变器电压误差补偿策略[J].电力电子技术,2005,39(5):33-34,53. |
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| 作者姓名： | 李世平 李擎 李华德 |
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| 作者单位： | 山东工商学院,山东,烟台,264005;北京科技大学,北京,100083 |
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| 摘 要： | 以中点箝位式(Neutral Point Clamped,NPC)三电平电路和双三电平电路拓扑结构为例,分析了SPWM控制的多电平逆变器中功率元件的死区及管压降对输出特性的影响。提出了通过改变SPWM电压控制矢量来补偿死区和管压降造成的电压误差的策略。实验表明,对于多电平逆变器供电的异步电动机控制系统,在无定子电流闭环调节的情况下,采用该补偿策略可以有效地改善输出特性。
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| 关 键 词： | 逆变器 异步电机 死区/多电平 正弦脉宽调制 管压降 |
| 文章编号： | 1000-100X（2005）05-0000-00 |
| 修稿时间： | 2005-07-30 |
A Voltage-Error Compensation Strategy for Multi-level Inverter based on SPWM Control |
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| LI Shi-ping,LI Qing,LI Hua-de.A Voltage-Error Compensation Strategy for Multi-level Inverter based on SPWM Control[J].Power Electronics,2005,39(5):33-34,53. |
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| Authors: | LI Shi-ping LI Qing LI Hua-de |
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| Affiliation: | 1.Shandong Institute of Busincss and Technology, Yantai 264005 ,China; 2.Beijing University of Science and Technology, Beijing 100083, China |
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| Abstract: | Take neutral point clamped (NPC) three-level inverter and double three-level inverter as example,the IGBT dead-time and voltage-drop in multi-level inverter,which influence on the output-characteristics of multi-level inverter based on SPWM, are analyzed in this paper. A compensation strategy is proposed, which can improve the output-characteristics by means of the compensation of voltage control vector of SPWM. The test shows that the proposed strategy is efficient for multi-level inverter-fed induction machine control system without stator-current loop. |
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| Keywords: | inverter induction motor dead-time / multi-level SPWM control voltage-drop |
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