The Experts below are selected from a list of 265266 Experts worldwide ranked by ideXlab platform
Nicola Femia - One of the best experts on this subject based on the ideXlab platform.
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a power loss dependent inductance model for ferrite core power Inductors in switch mode power supplies
IEEE Transactions on Circuits and Systems I-regular Papers, 2019Co-Authors: Alberto Oliveri, Matteo Lodi, Marco Storace, Kateryna Stoyka, Giulia Di Capua, Nicola FemiaAbstract:This paper proposes a new modeling approach for ferrite-core (FC) power Inductors used in switch-mode power supplies (SMPSs). In particular, a novel power-loss-dependent inductance behavioral model is proposed, whose parameters can be identified through a limited set of proper experimental measurements of Inductor current and voltage. Unlike conventional thermal modeling approaches, which require information on core temperature, the proposed behavioral model relies only on easily measurable quantities. The model is also suitable for being implemented in circuit simulators. By comparing PSIM simulations and experimental measurements on a buck converter for commercial FC Inductors, we show that the model allows a reliable prediction of the steady-state Inductor current, under different SMPS working conditions.
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a novel method to predict the real operation of ferrite Inductors with moderate saturation in switching power supply applications
IEEE Transactions on Power Electronics, 2016Co-Authors: Giulia Di Capua, Nicola FemiaAbstract:This paper presents a method to predict the real operation current wave-shape of Ferrite Core (FC) Inductors in switching power supply applications involving a moderate Inductor saturation. The method is based on a behavioral analytical model of inductance versus current saturation curve, obtained starting from the data provided by Inductors manufacturers. The algorithm developed to solve the nonlinear model of the Inductor can be applied to predict the range of the operating conditions involving a sustainable partial saturation for FC Inductors, and the resulting method is best suited for the selection of minimum size Inductors for high-power-density power supply design solutions.
Alberto Oliveri - One of the best experts on this subject based on the ideXlab platform.
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a power loss dependent inductance model for ferrite core power Inductors in switch mode power supplies
IEEE Transactions on Circuits and Systems I-regular Papers, 2019Co-Authors: Alberto Oliveri, Matteo Lodi, Marco Storace, Kateryna Stoyka, Giulia Di Capua, Nicola FemiaAbstract:This paper proposes a new modeling approach for ferrite-core (FC) power Inductors used in switch-mode power supplies (SMPSs). In particular, a novel power-loss-dependent inductance behavioral model is proposed, whose parameters can be identified through a limited set of proper experimental measurements of Inductor current and voltage. Unlike conventional thermal modeling approaches, which require information on core temperature, the proposed behavioral model relies only on easily measurable quantities. The model is also suitable for being implemented in circuit simulators. By comparing PSIM simulations and experimental measurements on a buck converter for commercial FC Inductors, we show that the model allows a reliable prediction of the steady-state Inductor current, under different SMPS working conditions.
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Accurate Modeling of Inductors Working in Nonlinear Region in Switch-Mode Power Supplies with Different Load Currents
2018 15th International Conference on Synthesis Modeling Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2018Co-Authors: Alberto Oliveri, Matteo Lodi, Marco StoraceAbstract:In this paper a nonlinear model is proposed to characterize ferrite-core Inductors operating in saturation region in Switch-Mode Power Supplies (SMPSs). The model, identified through experimental measurements of Inductor current and voltage, relates the inductance to the current flowing through the Inductor and also to the SMPS load current. Results show that the model allows reproducing the Inductor current with high accuracy, in different working conditions.
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SMACD - Accurate Modeling of Inductors Working in Nonlinear Region in Switch-Mode Power Supplies with Different Load Currents
2018 15th International Conference on Synthesis Modeling Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2018Co-Authors: Alberto Oliveri, Matteo Lodi, Marco StoraceAbstract:In this paper a nonlinear model is proposed to characterize ferrite-core Inductors operating in saturation region in Switch-Mode Power Supplies (SMPSs). The model, identified through experimental measurements of Inductor current and voltage, relates the inductance to the current flowing through the Inductor and also to the SMPS load current. Results show that the model allows reproducing the Inductor current with high accuracy, in different working conditions.
Jeffrey H Lang - One of the best experts on this subject based on the ideXlab platform.
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Modeling, design and performance of integrated power electronics using MEMS toroidal Inductors
2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, 2014Co-Authors: Mohammad Araghchini, Jeffrey H LangAbstract:This paper presents the design and optimization of MEMS-microfabricated toroidal Inductors targeted for use in integrated power electronics. The process is based on Monte-Carlo Inductor synthesis, performance evaluation based on analytic Inductor models and circuit simulation, and Pareto-optimal filtering. The models and simulation are verified through comparison with magnetic finite element analysis and measurements. The design process is illustrated through the development of a buck converter in a 25-W LED driver that uses air-core toroidal Inductors and GaN transistors. Design results indicate that efficiencies higher than 90% and power densities higher than 100 W/in3 are possible. In the resulting designs the Inductors are no longer the physically largest part of the converter.
Marco Storace - One of the best experts on this subject based on the ideXlab platform.
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a power loss dependent inductance model for ferrite core power Inductors in switch mode power supplies
IEEE Transactions on Circuits and Systems I-regular Papers, 2019Co-Authors: Alberto Oliveri, Matteo Lodi, Marco Storace, Kateryna Stoyka, Giulia Di Capua, Nicola FemiaAbstract:This paper proposes a new modeling approach for ferrite-core (FC) power Inductors used in switch-mode power supplies (SMPSs). In particular, a novel power-loss-dependent inductance behavioral model is proposed, whose parameters can be identified through a limited set of proper experimental measurements of Inductor current and voltage. Unlike conventional thermal modeling approaches, which require information on core temperature, the proposed behavioral model relies only on easily measurable quantities. The model is also suitable for being implemented in circuit simulators. By comparing PSIM simulations and experimental measurements on a buck converter for commercial FC Inductors, we show that the model allows a reliable prediction of the steady-state Inductor current, under different SMPS working conditions.
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Accurate Modeling of Inductors Working in Nonlinear Region in Switch-Mode Power Supplies with Different Load Currents
2018 15th International Conference on Synthesis Modeling Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2018Co-Authors: Alberto Oliveri, Matteo Lodi, Marco StoraceAbstract:In this paper a nonlinear model is proposed to characterize ferrite-core Inductors operating in saturation region in Switch-Mode Power Supplies (SMPSs). The model, identified through experimental measurements of Inductor current and voltage, relates the inductance to the current flowing through the Inductor and also to the SMPS load current. Results show that the model allows reproducing the Inductor current with high accuracy, in different working conditions.
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SMACD - Accurate Modeling of Inductors Working in Nonlinear Region in Switch-Mode Power Supplies with Different Load Currents
2018 15th International Conference on Synthesis Modeling Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2018Co-Authors: Alberto Oliveri, Matteo Lodi, Marco StoraceAbstract:In this paper a nonlinear model is proposed to characterize ferrite-core Inductors operating in saturation region in Switch-Mode Power Supplies (SMPSs). The model, identified through experimental measurements of Inductor current and voltage, relates the inductance to the current flowing through the Inductor and also to the SMPS load current. Results show that the model allows reproducing the Inductor current with high accuracy, in different working conditions.
Kunrong Wang - One of the best experts on this subject based on the ideXlab platform.
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modeling and analysis of coupled Inductors in power converters
IEEE Transactions on Power Electronics, 2011Co-Authors: Guangyong Zhu, Brent Mcdonald, Kunrong WangAbstract:This paper describes a new approach to the analysis of switched mode power converters utilizing coupled Inductors and presents a novel canonical circuit model for N-winding coupled Inductors. Waveform and ripple of the winding current in a coupled Inductor converter can be easily determined using the developed model similar to those obtained in an uncoupled Inductor converter. Influence of coupling coefficient on converter steady state and transient performance is readily predicted by the proposed model. It is found that in an N-phase coupled Inductor converter, the voltage waveforms driving the leakage Inductors are no longer the phase node voltages but are the modified voltages with a frequency N times the original switching frequency. In addition, their magnitudes also vary with the coupling coefficient among the coupled windings. Through coupling, a converter is capable of responding faster to load transient depending on the coupling coefficient and control mechanism, and that dependency is analytically revealed in the paper. Finally, a two-phase buck regulator is experimentally tested to verify the proposed model.
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modeling and analysis of coupled Inductors in power converters
Applied Power Electronics Conference, 2009Co-Authors: Guangyong Zhu, Brent Mcdonald, Kunrong WangAbstract:This paper describes a new approach to the analysis of switched mode power converters utilizing coupled Inductors and presents a novel canonical circuit model for N-winding coupled Inductors. Waveform and ripple of the winding current in a coupled Inductor converter can be easily determined using the developed model similar to those obtained in an uncoupled Inductor converter. Influence of coupling coefficient on converter steady state and transient performances is readily predicted by the proposed model and a comparison of coupled and uncoupled Inductor converters is provided. It is found that coupling among windings effectively alters the phase node voltage waveforms driving the coupled Inductors. Through coupling, a converter is capable of responding faster to load transient depending on the coupling coefficient and control mechanism, and this dependency is analytically revealed in the paper. Some design constraints regarding coupling coefficient are also discussed for two-winding and multi-winding coupled Inductors in power converter applications. Finally, a two-phase buck regulator is experimentally tested to verify the proposed model.
