Search results for "non-linear magnetic"

showing 4 items of 4 documents

NON-LINEAR INDUCTOR CONTRIBUTION TO HARMONIC SPECTRUM IN POWER CONVERTERS

The paper investigates the harmonic content in DC/DC power converters where the inductor is operated in the non-linear region. This operation is often exploited to use lighter and cheaper inductors; as a drawback, an increasing number of harmonics is noticeable. A theoretical analysis is proposed. It is based on a polynomial model of the inductor used in a boost converter. Results are given by the spectra of the output voltage performed on a circuit prototype.

Non-linear incuctorpower converterDC-DC converterpower inductornon-linear magneticSettore ING-INF/01 - Elettronica
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Non-Linear Inductors Characterization in Real Operating Conditions for Power Density Optimization in SMPS

2021

The exploitation of power inductors outside their linear region in switching converters can be achieved by raising the current until a decreasing of the inductance can be noticed. It allows using a smaller magnetic core increasing the power density of the converter. On the other hand, a detailed description of the magnetization curve including the temperature is required. Since this information is often not included in the inductor’s datasheets, this paper shows how to identify the behavior of an inductor when it is operated up to saturation and its temperature rises. In order to characterize the inductor in real operating conditions, a dedicated measurement rig has been developed. It consi…

TechnologyControl and OptimizationMaterials science020209 energyEnergy Engineering and Power Technologypower inductor02 engineering and technologyInductorSettore ING-INF/01 - ElettronicaSaturation currentinductance measurement0202 electrical engineering electronic engineering information engineeringElectrical and Electronic Engineeringnon-linear magneticEngineering (miscellaneous)Saturation (magnetic)modelDC/DC power converterRenewable Energy Sustainability and the Environmentbusiness.industryTsaturation020208 electrical & electronic engineeringElectrical engineeringpower densityConvertersinductorPower (physics)InductanceFERRITE INDUCTORSMagnetic corenon-linear magnetic; inductance measurement; power inductor; saturation magnetization; DC/DC power converter; power densityTransient (oscillation)saturation magnetizationbusinessEnergy (miscellaneous)Energies
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Design and Modeling of an Interleaving Boost Converter with Quasi-Saturated Inductors for Electric Vehicles

2020

This paper is focused on the analysis and modeling of DC-DC boost converters in interleaving configuration exploiting inductors in the quasi-saturation region. The converter is designed to optimize the power density by minimizing the size of the inductors. A simulation study for electric vehicle applications is conducted analyzing the effects of duty cycle and temperature variation on the ripple of the input current giving, moreover, information on the performances and dynamics of the converter for further implementation and optimizations.

business.product_categorynon-linear magneticsInterleavingComputer science020209 energysaturation020208 electrical & electronic engineeringhybrid vehicle02 engineering and technologyConvertersInductorinductorSettore ING-INF/01 - ElettronicaNon-linear magnetics inductor saturation power electronics interleaving boost converter fuel cell hybrid vehiclefuel cellpower electronicsDuty cyclePower electronicsElectric vehicleBoost converter0202 electrical engineering electronic engineering information engineeringElectronic engineeringbusinessHybrid vehicleinterleaving boost converter
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Non-Linear Inductor Models Comparison for Switched-Mode Power Supplies Applications

2022

The use of non-linear power inductors, intended as devices exploited up to a current at which the inductance is halved, is of great interest in switched-mode power supplies (SMPSs). Indeed, it allows the use of lighter and cheaper inductors improving the power density. On the other hand, the analysis of SMPSs equipped with non-linear inductors requires appropriate modeling of the inductor reproducing the inductance versus current. This paper compares two main analytical models proposed in the literature: the former is based on a polynomial, and the latter exploits the arctangent function to reproduce the non-linearity of the inductance. Performance is compared by considering the effort of r…

modellingswitched mode power supplynon-linear magnetics; saturable core; inductor; modelling; switched mode power supply; power densitynon-linear magneticsComputer Networks and CommunicationsHardware and ArchitectureControl and Systems Engineeringsaturable coreSignal Processingpower densityElectrical and Electronic EngineeringInductorSettore ING-INF/01 - Elettronica
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