Modulation Strategy Based on Mathematical Construction for Matrix Converter Extending the Input Reactive Power Range
Modulation Strategy Based on Mathematical Construction for Matrix Converter Extending the Input Reactive Power Range
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DOI：
10.1109/tpel.2013.2256929
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发表时间：
2014-02
影响因子：
6.7
通讯作者：
Xing Li;M. Su;Yao Sun;Hanbing Dan;Wenjing Xiong
中科院分区：
文献类型：
--
作者：
Xing Li;M. Su;Yao Sun;Hanbing Dan;Wenjing Xiong
本文提出了一种基于数学构造的三相矩阵变换器的调制策略来扩展输入无功功率范围，该方法物理意义明确，计算量小。该策略是基于由多个矩阵之和组成的调制矩阵的构造而开发的，其中一个矩阵用于产生所需的输出电压。其他的是为了提供更多的控制自由度，使得矩阵变换器可以产生尽可能多的输入无功功率。在数学构造法的框架内，建立了一个最大输入无功功率的优化问题，其解析解是很难得到的。通常，优化问题可以通过一些数值方法来解决，但会消耗大量的时间。因此，提出了一种次优方法来减轻计算负担。此外，该策略与最佳振幅和间接SVM方法进行了比较，在不同的操作条件下的最大输入无功功率。结果表明，该方法可以获得最大的输入无功功率在大多数情况下。仿真和实验结果验证了该方法的正确性。
In this paper, a modulation strategy based on mathematical construction is proposed to extend the input reactive power range for the three-phase matrix converter, which offers clear physical meanings and less computational efforts. This strategy is developed based on the construction of the modulation matrix composed by the sum of several matrices, one of which is used to generate the required output voltage. The others are intended to provide more degrees of freedom for control such that the matrix converter can produce the input reactive power as much as possible. In the framework of mathematical construction method, an optimization problem for the maximum input reactive power is formulated, whose analytical solution is difficult to obtain. Usually, optimization problem can be solved by using some numerical methods, but lots of time will be consumed. Therefore, a suboptimal method is presented to mitigate the computational burden. Besides, the proposed strategy is compared with the optimum-amplitude and indirect SVM methods, in terms of the maximum input reactive power for different operating conditions. It is shown that the proposed method can obtain the maximum input reactive power over most situations. Finally, the correctness of the proposed method is confirmed by simulation and experimental results.