Microelectronics Engineering Group

Microelectronics Engineering Group

Electronics Technology, Systems and Automation Engineering Department University of Cantabria
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Title:Parallel connection of multiple resonant inverters to drive high-power high-intensity discharge lamps
Type:International Conference
Where:IEEE. The 31st Annual Conference of the Industrial Electronics Society IECON 2005
Authors: Christian Brañas
Francisco J. Azcondo
Rosario Casanueva
Salvador Bracho
R&D Lines: Design of electronic circuits for industrial applications
Projects: Sistemas de alimentación para lámparas de descarga y equipos de electroer...
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Abstract:- This paper presents the analysis and design of a new configuration of a resonant inverter suitable for high-intensity discharge (HID) lamp ballast applications. The proposed inverter results from the parallel connection of three class D LCp resonant inverters, sharing the total load current. In this way, a reduction of the conduction losses is achieved. The regulation is implemented at constant frequency, modifying the phase displacement of the drive signals of one inverter section with respect to the others. High efficiency dimming operation at around 50% of full power is achieved canceling one of the non-controlled phases
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