Energy savings with solid-state ballasted high-pressure sodium lamps
Abstract
The performance of three types of solid-state ballasts used to operate high-pressure sodium lamps is discussed. Each type of solid-state ballast has been designed to operate a high pressure sodium (HPS) lamp of a different wattage (150, 200, and 400 watts). The performance of these ballasts compared to standard core-coil ballasts operating the same HPS lamps shows that system efficiency improves as much as 17%. The solid-state ballasted HPS system also demonstrates excellent regulation with respect to input voltage and output power. These new ballasts can dim the HPS lamps and reduce flicker from more than 60% to less than 3%. Refitting street lighting with these new HPS systems provides an attractive return on initial capital investment.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1981
- Bibcode:
- 1981STIN...8133415V
- Keywords:
-
- Alkali Vapor Lamps;
- Arc Lamps;
- Ballasts (Impedances);
- Sodium;
- Solid State Devices;
- Energy Conservation;
- Performance Tests;
- Electronics and Electrical Engineering