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A Digital Predictive Critical Conduction Mode Buck Converter Control Method

Cited 4 time in Web of Science Cited 4 time in Scopus
Authors

Lee, Jye June; Shin, Jong Won; Cho, Bo Hyung

Issue Date
2012-02
Publisher
IEEE
Citation
2012 TWENTY-SEVENTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC), pp.709-714
Abstract
Digital control of power converters has been recently recognized as a feasible solution due to its advantages over analog controllers; enhanced reliability, flexibility and modularity. Power electronic systems such as high intensity discharge (HID) lamp ballasts require relatively complex control methods and various stages of control schemes. By utilizing digital signal processors, advanced control algorithms can be easily implemented while using the left over computational capacity for basic pulse-width modulations for gate drives. This paper presents a fully digital control method for a buck converter operating in critical conduction mode (CRM). The switching frequency which assures CRM is calculated and predicted for the next period using the sensed voltage and current information generally needed for controlling the output of the converter. Simulation and experimental results of a 125 W buck converter prototype verify the feasibility of the proposed control method implemented by a digital signal processor (DSP).
ISSN
1048-2334
URI
https://hdl.handle.net/10371/201468
DOI
https://doi.org/10.1109/APEC.2012.6165897
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  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area DC-DC and AC-DC power conversion, DC-DC 및 AC-DC 전력변환, converter modeling, high-density, high-frequency power conversion, 고밀도 고주파 전력 변환, 컨버터 모델링

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