標題: Digital Voltage Control of Boost CRM PFC AC/DC Converters with TRIAC Phase Control Dimmer
作者: Lin, Chih-Wei
Tzou, Ying-Yu
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: Power-factor-correction (PFC);critical conduction mode (CRM);phase dimming control (TRIAC);digital control;AC/DC converter;incandescent lamp
公開日期: 2012
摘要: This paper presents a digital voltage control scheme for boost critical conduction mode (CRM) power-factor-correction (PFC) AC/DC converters with TRIAC phase control dimmer to use in the lighting equipment ex. LED or fluorescent lamp. The TRIAC is a standard type of dimmer and work fine with resistive load such as ordinary Tungsten filament light bulb (incandescent lamp), however, for non-resistive lighting sources, a well-designed AC-DC converter must be designed to provide good power quality as well as wide linear non-flickering dimming control range. A variable PFC output voltage modulation method is proposed to enhance the dimming control range. The TRIAC dimmer will cause switching oscillations due to the PFC input filter, a damper circuit is designed to minimize this effect. The proposed control scheme has been verified by using simulation software PSIM in applications to a 50 W prototype of boost CRM PFC AC/DC converter with TRIAC phase control dimmer. Simulation and experimental results are given to illustrate the feasibility of the proposed control scheme.
URI: http://hdl.handle.net/11536/23139
ISBN: 978-1-4673-2868-5
期刊: 2012 IEEE INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY (POWERCON)
顯示於類別:會議論文