基于改善电压传输比的矩阵变换器研究

Study for Matrix Converters Based on Improving Their Voltage Transfer Ratio

矩阵变换器具有自身的一系列优点 ,必定会在各行业得到广泛应用。因此 ,矩阵变换器的研究愈来愈成为热点。首先简单介绍了矩阵变换器的优、缺点 ,然后分两种情况详细介绍了矩阵变换器电压传输比的国外研究状况。第一种是电压传输比在 0 .866以下的研究状况 ;第二种是电压传输比在 0 .866以上的研究状况 ,并对电压传输比从变流技术的角度进行了推导 ,揭示了电压传输比与控制角的内在联系。

Matrix converters will have to be widely applied in all sorts of ways in not long future because of their a series of advantages. Thus, a more and more significant attention will be paid in the development of matrix converters. The advantages and disadvantages of matrix converters are briefly introduced for the first time. Then the international research situations of their voltage transfer ratio are introduced in detail according to two kinds of things. The first one is the study situation of voltage transfer ratio below 0.866; the second one is the study situation of voltage transfer ratio above 0.866. And the voltage transfer ratio is deduced by means of power electronic transformation technique. The internal relation between the voltage transfer ratio and the control angle is disclosed. A brief revie is given to the national things.