Hybrid electronic ballast operating the HPS lamp at constant power

被引:10
|
作者
Kaiser, W [1 ]
机构
[1] Univ Sao Paulo, Escola Politecn, BR-05508900 Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
constant power operation; high-pressure sodium lamp; hybrid lag ballast;
D O I
10.1109/28.663474
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A hybrid solid-state ballast that operates high-pressure sodium (HPS) lamps at main frequency with constant power through rated life is described, The system utilizes two inductors connected in series and a bidirectional semiconductor switch connected in parallel to one of them, A lamp-starting circuit has also been included in the ballast, The static switch, with phase angle control provided by power feedback, actuates on lamp current compensating variations of the main voltage and increases of lamp are voltage. The system offers the following: 1) increase of lamp life and system lumen maintenance; 2) power factor and total harmonic distortion of line current comparable to conventional lag ballast; and 3) operating cost savings, both in terms of energy cost and lamp replacement cost.
引用
收藏
页码:319 / 324
页数:6
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