| 双级矩阵变换器输入电压不平衡控制策略 |
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| 引用本文： | 李刚,孙凯,黄立培.双级矩阵变换器输入电压不平衡控制策略[J].电工电能新技术,2009,28(4). |
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| 作者姓名： | 李刚 孙凯 黄立培 |
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| 作者单位： | 清华大学电机系电力系统及大型发电设备安全控制国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 双级矩阵变换器(又称为间接矩阵变换器)是一种新的矩阵变换器拓扑,存在中间直流环节,但不包含储能的电容或者电感.因此,当输入侧电压不平衡时,输入输出电流波形将直接受到影响,降低了双级矩阵变换器的性能.针对这一问题,本文提出了一种基于瞬时无功理论的补偿方法.在输入电压不平衡情况下,该方法控制输入侧有功为恒定,构造输入电流矢量参考值,并对整流级电路和逆变级电路分别采用空间矢量脉宽调制,从而保证输出性能的稳定.实验结果表明,该方法有效地减小了输入输出电流中的谐波含量,改善了变换器的性能.
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| 关 键 词： | 双级矩阵变换器 不平衡 瞬时无功 |
Control strategy of two-stage matrix converter under unbalanced input voltages |
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| LI Gang,SUN Kai,HUANG Li-pei.Control strategy of two-stage matrix converter under unbalanced input voltages[J].Advanced Technology of Electrical Engineering and Energy,2009,28(4). |
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| Authors: | LI Gang SUN Kai HUANG Li-pei |
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| Affiliation: | LI Gang,SUN Kai,HUANG Li-pei(State Key Lab of Security Control , Simulation of Power Systems , Large Scale Generation Equipments,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Two-stage matrix converter(TSMC,also named indirect matrix converter) is a novel topology of matrix converters,which is a direct three-phase AC to AC power conversion device.It has a real DC link,but without energy-stored capacitor or inductor.Input voltage unbalance in the source of TSMC can immediately reflect to the output side and lower its performance.In order to reduce the effect of input voltage unbalance,a compensation method based on instantaneous reactive power theory is proposed in this paper.Und... |
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| Keywords: | two-stage matrix converter unbalance instantaneous reactive power |
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