Improved double line voltage synthesis of matrix converter for input current enhancement under unbalanced power supply

Yan Yan; Haijiao An; Tingna Shi; Changliang Xia

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Improved double line voltage synthesis of matrix converter for input current enhancement under unbalanced power supply

机译：矩阵转换器的改进双线电压合成，可在不平衡电源下增强输入电流

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Input voltage unbalance causes input current waveform degradation of matrix converter because of the lack of reactive component in dc link. To reduce the harmonic content of input current, dynamic input current modulation methods based on space vector modulation strategy have been presented in some works. This study proposes two improved double line voltage synthesis (DLVS) strategies for matrix converters. Both strategies apply the dynamic input current modulation methods to DLVS aiming at improving input and output waveforms at the same time. Besides, simplicity is another advantage of the methods proposed in this study. Phase detection of input current modulation vector is eliminated, which reduces the calculation time of control algorithm. Numerical simulations and experiments with a 10 kW prototype are carried out. The results are given to verify the feasibility and effectiveness of the proposed strategies.

机译：由于直流链路中缺少无功分量，因此输入电压不平衡会导致矩阵转换器的输入电流波形劣化。为了减少输入电流的谐波含量，一些工作提出了基于空间矢量调制策略的动态输入电流调制方法。这项研究提出了两种改进的矩阵转换器双线电压合成（DLVS）策略。两种策略都将动态输入电流调制方法应用于DLVS，旨在同时改善输入和输出波形。此外，简单性是本研究中提出的方法的另一个优点。消除了输入电流调制矢量的相位检测，从而减少了控制算法的计算时间。进行了10 kW原型的数值模拟和实验。结果证明了所提出策略的可行性和有效性。

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《Power Electronics, IET》 |2013年第4期|798-808|共11页
作者
Yan Yan; Haijiao An; Tingna Shi; Changliang Xia;
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Tianjin University, People¿s Republic of China;

Tianjin Institute of Metrological Supervision Testing, People¿s Republic of China;

Tianjin University, People¿s Republic of China;

Tianjin University, People¿s Republic of China;

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Improved double line voltage synthesis of matrix converter for input current enhancement under unbalanced power supply

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