Microelectronics Engineering Group

Microelectronics Engineering Group

Electronics Technology, Systems and Automation Engineering Department University of Cantabria
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Title:Phase Controlled LCpCs Resonant Inverter Applied to HID Lamp Control
Type:International Conference
Where:Proceedings of the 2004 IEEE 35th Annual Power Electronics Specialists Conference (PESC’04). pp. 2434-2440
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 for high-intensity discharge (HID) lamp ballast applications. The proposed inverter results from the parallel connection of two class D LCpCs resonant inverters. The dimming control is implemented at constant frequency, modifying the phase displacement between the drive signals of each inverter. At full power operation, the inverter guarantees that the power applied to the lamp is within the recommended operation area regardless of the lamp aging. In order to achieve good repeatability of the circuit performance, the design sequence also considers the tolerance of circuit components and is verified by the Monte Carlo method. A 150W prototype has been built to validate the design proposal.
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