Search results for "Power inductor"

showing 4 items of 4 documents

A Temperature Dependent Non-Linear Inductor Model for a DC/DC Boost Converter

2018

This paper is focused on the use of non-linear inductors in DC/DC switching converters, as well as their behaviour due to changes in current and temperature. The model of an inductor is set up on the basis of experimental data, which are automatically acquired by a virtual instrument; from those data, a polynomial curve describing the inductance variations is obtained. The analysis of the converter, performed by including the proposed model, is validated by experimental tests.

PhysicsPower inductorBasis (linear algebra)020209 energy020208 electrical & electronic engineeringExperimental data02 engineering and technologyConvertersInductorPower inductor modelling partial saturation roll-off region losses and temperature rise DC/DC converterSettore ING-INF/01 - Elettronicapartial saturationlossesInductanceSet (abstract data type)modellingNonlinear systemControl theoryDC/DC converterBoost converter0202 electrical engineering electronic engineering information engineeringrolloff region
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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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A Measurement System for Power Inductors in Non-Linear Operating Conditions

2021

The exploitation of power inductors in switching converters outside the linear region requires detailed information on the magnetization curve that often is not included among those usually available on their datasheets. This paper proposes an automatic system in which the inductor is characterized in real operating conditions taking into account also the core temperature. It is based on a switching converter suitably controlled by a virtual instrument. The system was tested by retrieving the inductance vs current curves of two commercial inductors for core temperatures up to 105°C, showing the different behaviors of the magnetization curves. Results are coherent with data given by manufact…

Computer scienceNonlinear magnetics inductance measurement power inductors saturation magnetization DC-DC power convertersSystem of measurementpower inductorsConvertersInductorSettore ING-INF/01 - ElettronicaTemperature measurementPower (physics)InductanceNonlinear systemMagnetizationHardware_GENERALinductance measurementDC-DC power convertersElectronic engineeringnonlinear magneticssaturation magnetization2021 IEEE 30th International Symposium on Industrial Electronics (ISIE)
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