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RISS 인기검색어
- 검색키워드
- 저자 : Sami Dhahri (검색결과 3 건)
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Design of an Integrated Inductor with Magnetic Core for Micro-Converter DC-DC Application
Dhahri, Yassin,Ghedira, Sami,Besbes, Kamel The Korean Institute of Electrical and Electronic 2016 Transactions on Electrical and Electronic Material Vol.17 No.6
This paper presents a design procedure of an integrated inductor with a magnetic core for power converters. This procedure considerably reduces design time and effort. The proposed design procedure is verified by the development of an inductor model dedicated to the monolithic integration of DC-DC converters for portable applications. The numerical simulation based on the FEM (finite elements method) shows that 3D modeling of the integrated inductor allows better estimation of the electrical parameters of the desired inductor. The optimization of the electrical parameter values is based on the numerical analysis of the influence of the geometric parameters on the electrical characteristics of the inductor. Using the VHDL-AMS language, implementation of the integrated inductor in a micro Buck converter demonstrate that simulation results present a very promising approach for the monolithic integration of DC-DC converters.
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Design of an Integrated Inductor with Magnetic Core for Micro-Converter DC-DC Application
Yassin Dhahri,Sami Ghedira,Kamel Besbes 한국전기전자재료학회 2016 Transactions on Electrical and Electronic Material Vol.17 No.6
This paper presents a design procedure of an integrated inductor with a magnetic core for power converters. Thisprocedure considerably reduces design time and effort. The proposed design procedure is verified by the developmentof an inductor model dedicated to the monolithic integration of DC-DC converters for portable applications. Thenumerical simulation based on the FEM (finite elements method) shows that 3D modeling of the integrated inductorallows better estimation of the electrical parameters of the desired inductor. The optimization of the electricalparameter values is based on the numerical analysis of the influence of the geometric parameters on the electricalcharacteristics of the inductor. Using the VHDL-AMS language, implementation of the integrated inductor in a microBuck converter demonstrate that simulation results present a very promising approach for the monolithic integrationof DC-DC converters.
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walid Trabelsi,Mondher Belhaj Amor,Mohamed Anis Lebbi,Chiheb Romdhani,Sami Dhahri,Mustapha Ferjani 대한마취통증의학회 2013 Korean Journal of Anesthesiology Vol.64 No.4
Background: Infraclaviculr Brachial plexus (ICBP) block is useful for upper extremity surgery. The aim of this study was to compare the ultrasound (US) technique with the nerve stimulation (NS) technique in their success rates and times to perform ICBP block. Methods: 60 patients undergoing surgery of the upper limb were randomly allocated into two groups (n = 30 per group). Group 1; US, and Group 2; NS. Procedure time (including time for initial ultrasound examination), the success rate and the onset time of sensory and motor blockade were assessed. Results: The time needed to perform the ICBP block is similar in both groups (220 seconds ± 130 in US group versus 281 ± 134 seconds in NS group; P = 0.74). The success rate of all the nerve blocks in the US group was 100%. The success rate in the NS group was 73.3%, 76.7%, 76.7% and 100% for radial, ulnar, medial, and musculocutaneous nerve, respectively. A significantly faster onset of sensory block for the radial, ulnar, median, musculocutaneous, and the four nerves considered together were observed. The onset of motor block for the radial, ulnar, and medial nerves was faster in the US group. However, the onset of motor block for the musculocutaneous nerve and the four nerves considered together was comparable between the two groups. Conclusions: The ultrasound-guided infraclavicular brachial plexus block is a significantly efficacious method with faster onset but similar procedure time compared to the nerve stimulation technique.
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