Title :
New control strategy for a two-stage low-frequency square-wave electronic ballast for MHD lamp
Author :
Xu, Jianbing ; Chen, Min ; Qian, Zhaoming
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents a novel control strategy for a two-stage acoustic resonance free electronic ballast for high intensity discharge (HID) lamp. The ballast consists of a PFC stage, a low frequency half-bridge inverter with buck capability, and an igniter. A new control method proposed to control the half bridge inverter to supplies the lamp with low square wave current. A novel and simple method is proposed to conquer overshoot problem during output current inverting instant. The proposed control method was verified with experimental results.
Keywords :
DC-DC power convertors; discharge lamps; invertors; lamp accessories; MHD lamp; PFC stage; acoustic resonance free electronic ballast; buck capability; control strategy; half bridge inverter; high intensity discharge lamp; igniter; low frequency electronic ballast; low frequency inverter; low square wave current; overshoot problem; square wave electronic ballast; two stage electronic ballast; Bridge circuits; Costs; DC-DC power converters; Electronic ballasts; Equivalent circuits; Frequency; High intensity discharge lamps; Inverters; Magnetohydrodynamics; Switches;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620664
