Dimmable Electronic Ballast for 250W HPS Lamp in Street Lighting with Analog Dimming Interface Circuit

Author

Liu, Hankui ; Wang, Yijie ; Zhang, Xiangjun ; Xu, Dianguo ; Guo, Lili

Author_Institution

Department of Electrical Engineering, Harbin Institute of Technology, Harbin, P. R. China, 15001; Department of Information and Communications Engineering, Harbin Engineering University, Harbin, P. R. China, 15001

fYear

2007

fDate

Feb. 25 2007-March 1 2007

Firstpage

259

Lastpage

262

Abstract

A dimmable electronic ballast for 250W high pressure sodium (HPS) lamp, which is used in street lighting, is designed in this paper. Normally used dimming methods for electronic ballast are introduced and compared. Dimming control method by varying switching frequency is utilized in the designed ballast. A simple method to realize closed-loop control of lamp power is adopted. The interface circuit for analog dimming control is analyzed and tested. Open-circuit, shot-circuit and hot-lamp protections are adopted. Experimental results show that the ballast can dim from 33% to 100% rated power without acoustic resonance, its efficiency is higher than 90.3% through the whole dimming range.

Keywords

Circuit testing; Design engineering; Electromagnetic interference; Electronic ballasts; High intensity discharge lamps; Inverters; Microprocessors; Protection; Switching frequency; Voltage; Ballast; Dimming; HPS lamp; Street lighting;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE

Conference_Location

Anaheim, CA, USA

ISSN

1048-2334

Print_ISBN

1-4244-0713-3

Type

conf

DOI

10.1109/APEX.2007.357523

Filename

4195727