A Novel Low Ripple Converter with Interleaved Voltage Multiplier for X-ray Machine

• Main Authors: Ping-HsiangHuang, 黃鈵翔
• Other Authors: Jiann-Fu Chen
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/06403365558885866847

碩士 === 國立成功大學 === 電機工程學系 === 104 === 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.