Title :
Penta-Phase Series-Parallel LCsCp Resonant Inverter to Drive 1kW HPS Lamps
Author :
Brañas, Christian ; Azcondo, Francisco J. ; Casanueva, Rosario ; Diaz, Francisco J.
Author_Institution :
Univ. of Cantabria, Santander
Abstract :
This paper presents the analysis and design of a new configuration of a resonant inverter suitable for high pressure sodium (HPS) lamp ballast applications. The proposed inverter results from the parallel connection of five class D LCsCp resonant inverters. Since the load current is shared among five equal sections, the circuit is able to drive lamps over 1kW using low cost power MOSFETs and achieves better efficiency than single class D solutions due to the reduction of the conduction losses. The regulation is implemented at constant frequency, modifying the phase displacement of the output voltage of one inverter section with respect to the others.
Keywords :
lamp accessories; power MOSFET; resonant invertors; conduction losses; high pressure sodium lamp ballasts; load current; phase displacement; power 1 kW; power MOSFET; series-parallel resonant inverters; Circuits; Costs; Displacement control; Electronic ballasts; Frequency; Ignition; Lamps; MOSFETs; Resonant inverters; Voltage;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.132
