本論文提出了一種三相/單相矩陣轉換器基於Cockcroft-Walton倍壓電路，此矩陣轉換器應用於三相交流電源，其目的為將輸入之三相交流電源轉換為具有較高可變頻率的單相交流電源來傳輸到倍壓電路，與常規的Cockcroft-Walton倍壓電路相比，此轉換器具有低電流諧波失真、功率因數可調的交流電源與降低輸出電壓漣波且具可調之直流電壓。本文所推導矩陣轉換器之數學採用MATLAB/Simulink模擬軟體所建立之模擬平台來進行驗證，其中包含了功率級電路及控制方塊圖，藉由模擬結果以證明本論文所提出架構之可行性。

This thesis presents a three-phase to single-phase matrix converter based on Cockcroft-Walton voltage multiplier. The proposed converter transfers the three-phase ac source with line frequency to a single-phase ac source with variable high frequency, then charges the voltage multiplier. Compared with the conventional Cockcroft-Walton voltage multipliers, the proposed converter provides the line current with low harmonic distortion, adjustable power factor at the ac source, ripple reduction and regulated dc output voltage. The mathematical equation for the matrix converter has been verified by using MATLAB/Simulink that includes power stage and control block diagram. Finally, computer simulation results are shown to verify the performance of the proposed three-phase to single-phasematrix converter based on Cockcroft-Walton voltage multiplier.

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