本文主旨在於探討與研製一應用於X光機之高壓電源轉換器。針對目前X光機電源的輸出電壓波動性大，使得人體所受傷害加大與造成X光成像偽影而影響醫生判斷等缺點。故本文對電壓漣波做了改善，提出一交錯式全波倍壓電路，其架構主要概念係利用輸出端兩組反向電壓漣波以疊加相消的方式，使電壓漣波更加減小。本論文將會說明電路之動作原理分析與理論推導；最後研製一新型低漣波交錯式倍壓電源轉換器，輸入電壓為400V，輸出電壓為40kV，輸出功率為300W，電壓漣波因數為0.137%。為了證明本文電路的低電壓漣波，與傳統半波倍壓電路和對稱式全波倍壓電路作電壓漣波之比較，上述兩組電壓漣波因數分別為3.98%與0.7%，實驗結果可以驗證本文電路具有低電壓漣波之優勢。

The purpose of this study is to explore and implement a high voltage converter for X-ray machine. Currently, the X-ray machine have large output voltage ripple making the body and cause harm suffered increased X-ray imaging artifact influence doctors to determine shortcomings. In this thesis, an interleaved full-wave voltage multiplier which improve voltage ripple is proposed, its main concept is using two reverse voltage ripple in the way of superposition and cancellation so that the output voltage ripple is reduced, and finally develop a novel low ripple converter with interleaved voltage multiplier. Its input voltage is 400V, output voltage is 40kV, output power is 300W, and voltage ripple factor is 0.137%. Moreover, this proposed circuit compares voltage ripple with traditional half-wave voltage multiplier and symmetrical full-wave multiplier. Theirs voltage ripple factor are 3.98% and 0.7%. Experimental result shows the output voltage ripple is better than that of the conventional circuits.

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