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Publikācija: Analysis of Constant Output Power Operation of Tapped-Inductor Based LED Driver

Publication Type Full-text conference paper published in other conference proceedings
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Analysis of Constant Output Power Operation of Tapped-Inductor Based LED Driver
Field of research 2. Engineering and technology
Sub-field of research 2.2 Electrical engineering, Electronic engineering, Information and communication engineering
Authors Oļegs Tetervenoks
Keywords DC-DC power converters, LED lamps, predictive coding, pulse width modulation converters
Abstract There is a plenty of different kinds of control methods and approaches for DC-DC converters. This study was focused on the search for the most appropriate control strategy for dimmable LED driver. Predictive current programmed control seems to be such a control strategy. However, the high computational resources necessary for implementation as well as high price of such a control system prevents it from utilization in low and medium power devices. Proposed control system also uses the model of the converter to calculate necessary duty cycle at desired output power from several input parameters: input and output voltage of the converter as well as output current. These signals are relatively slowly changeable, that allows reducing the requirements for analog-to-digital converter conversion speed. However, the high computational resources also are required for this control method. Due to the problems encountered in the calculations the simplified version of the converter was considered in this article. The results of simulation for simplified version are given at the end of this article. Further evaluation of the proposed control method is necessary in order to identify potential drawbacks and to make proper evaluation and comparison with existing methods.
Reference Tetervenoks, O. Analysis of Constant Output Power Operation of Tapped-Inductor Based LED Driver. In: 54th International Scientific Conference of Riga Technical University: Section of Power and Electrical Engineering: Digest Book and Electronic Proceedings, Latvia, Rīga, 14-16 October, 2013. Riga: RTU Press, 2013, pp.17-19.
ID 17296