A high-frequency link matrix rectifier with a pure capacitive output filter has the advantages of reduced converter size and clamped voltage over the rectifier diode. However, when the converter operates in discontinuous conduction mode (DCM), there is high input current distortion. The distortion has to be compensated such that the total harmonic distortion (THD) does not exceed 5%. The straightforward way of reducing distortion is by designing the switching scheme. In this study, switching schemes based on space vector modulation have been studied to improve the input current quality in DCM. Several existing switching schemes and newly proposed switching schemes have been analysed and compared. A 600 W laboratory prototype has been built to verify the effect of switching schemes over input current quality. The experimental results show that the input current THD can be greatly reduced by applying proper switching scheme.

中文翻译：

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不连续传导模式下基于空间矢量调制的高频链路矩阵整流器切换方案

具有纯电容输出滤波器的高频链路矩阵整流器具有以下优点：减小了转换器尺​​寸，并在整流二极管上钳位了电压。但是，当转换器以不连续导通模式（DCM）工作时，输入电流失真会很高。必须对失真进行补偿，以使总谐波失真（THD）不超过5％。减少失真的直接方法是设计开关方案。在这项研究中，已经研究了基于空间矢量调制的开关方案，以改善DCM中的输入电流质量。已经分析和比较了几种现有的交换方案和新提出的交换方案。已经建立了600 W的实验室原型，以验证切换方案对输入电流质量的影响。