电工技术学报  2018, Vol. 33 Issue (12): 2850-2860    DOI: 10.19595/j.cnki.1000-6753.tces.170411
电力电子 |
考虑不同调制策略的间接矩阵变换器输入电流谐波特性分析
梅杨1, 2, 陈丽莎1, 2, 王闪闪1, 2
1. 北方工业大学北京市电力节能关键技术协同创新中心 北京 100144;
2. 北京电动车辆协同创新中心 北京 100144
Harmonic Analysis on the Input Current of Indirect Matrix Converter under Different Modulation Strategies
Mei Yang1, 2, Chen Lisha1, 2, Wang Shanshan1, 2
1. Collaborative Innovation Center of Key Power Energy-Saving Technologies in Beijing North China University of Technology University Beijing 100144 China;
2. Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100144 China
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摘要 为明确间接矩阵变换器(IMC)的输入电流谐波特性,进而抑制其输入谐波以改善网侧电能质量,利用变换器传递函数建立输入电流数学模型,确定其谐波组成,同时通过引入脉冲重心思想,综合考虑不同脉宽调制策略下脉冲幅值、宽度以及分布位置等特征,进一步分析明确输入电流谐波的主要频率成分及其含量。此外,在理论分析过程中发现了降低谐波频率成分的脉宽分布规律,即输出电压矢量脉宽比例对称分布。仿真和实验结果表明,根据所发现的脉宽比例对称分布原则,在采用双空间矢量调制(SVM)策略和两段式脉宽调制(PWM)策略时,输入电流中均主要含有输入频率的6n±1倍次谐波,而与输出频率无关。仿真和实验中测得的各次谐波含量符合理论分析结果,且随频率提高而衰减,证明了理论分析的有效性和正确性。
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梅杨
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王闪闪
关键词 间接矩阵变换器脉冲宽度调制脉冲重心输入电流谐波    
Abstract:The mathematical model based on the transfer function of the indirect matrix converter (IMC) is established for ascertaining harmonic components, to clarify the characteristics of input current harmonics and further suppress harmonics for improving power grid quality. Furthermore, the pulse barycenter concept, in which the amplitude, width and distribution position of a pulse are all considered, is introduced to analyze and determine the frequencies and magnitudes of main harmonic components. In addition, the principle of the output voltage vector pulse proportional symmetric distribution, which is able to attenuate input current harmonics, is discovered in the process of theoretical analysis and utilized under different modulation strategies. Simulation and experimental results show that, by using either dual space vector modulation (SVM) or two-stage pulse-width-modulation (PWM) with the pulse proportional symmetric distribution, the input currents mainly contain (6n±1)th low order harmonics, which are irrelevant to the output frequency, and the harmonic contents decrease as the frequency increases. Simulation and experimental results coincide with the theoretical results, which demonstrate the validity of the theoretical analysis.
Key wordsIndirect matrix converter    pulse width modulation    pulse barycentre    input current harmonic   
收稿日期: 2017-04-10      出版日期: 2018-06-22
PACS: TM921.2  
基金资助:国家自然科学基金(51477003),北京市自然科学基金(4152013)和北京市科技新星计划(Z161100004916049)资助项目
作者简介: 梅 杨 女,1981年生,博士,教授,主要从事电力电子与电力传动方向的研究。E-mail: meiy@ncut.edu.cn(通信作者);陈丽莎 女,1992年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: 799218907@qq.com
引用本文:   
梅杨, 陈丽莎, 王闪闪. 考虑不同调制策略的间接矩阵变换器输入电流谐波特性分析[J]. 电工技术学报, 2018, 33(12): 2850-2860. Mei Yang, Chen Lisha, Wang Shanshan. Harmonic Analysis on the Input Current of Indirect Matrix Converter under Different Modulation Strategies. Transactions of China Electrotechnical Society, 2018, 33(12): 2850-2860.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.170411          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I12/2850