Design and Implementation of Ozone-Driven Systems with Wide-Input Voltage Range

• Main Authors: Chun-WeiLin, 林峻偉
• Other Authors: Shyh-Jier Huang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/89149115880708969648

碩士 === 國立成功大學 === 電機工程學系 === 102 === This thesis proposes an ozone-driven system with wide-input voltage range. This study is motivated because the traditional ozone-driven system often used different voltage sources as the input voltage, leading to the difficulty of driving the ozone ceramic chip. Moreover, since the voltage gain of resonant circuit fails to satisfy the load demands, a transformer to boost the voltage is additionally hence required. To improve these demerits, the thesis proposes a modified half-bridge circuit integrated with a resonant inverter so that input voltage can be converted to different voltage levels. In the study, the resonant circuit is well designed such that it comes with a high voltage gain and the transformer cost can be largely saved. The study also suggests a duty-cycle modulation approach by which the wide-input voltage range is achieved, the zero-voltage switching is realized, and the constant-current is completed with the feedback control. To validate the feasibility of this proposed circuit, both software simulations and hardware experiments have been made. Experimental results support the practical value of the designated ozone-driven system.