Results 11 to 20 of about 143,179 (310)
Breakdown of the dipole approximation in core losses.
Ultramicroscopy, 2011 The validity of the dipole approximations commonly used in the inelastic scattering theory for transmission electron microscopy is reviewed. Both experimental and numerical arguments are presented, emphasizing that the dipole approximations cause significant errors of the order of up to 25% even at small momentum transfer.
Löffler S +4 more
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Analysis of Core Losses in Transformer Working at Static Var Compensator
Energies, 2023 This article presents the comparison of 3D and 2D finite element models of a power transformer designed for reactive power compensation stations. There is a lack of studies in the literature on internal electromagnetic phenomena in the active part of a ...
Piotr Osinski, Pawel Witczak
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Determination of Core Losses Using an Inverse Modeling Technique
IEEE Access, 2022 This paper presents an inverse thermal modeling technique to determine the core losses from the temperature rise inside the transformer core. For this purpose, initially, a customized printed circuit board (PCB) with thermal sensors is used to measure ...
Osaruyi Osemwinyen +5 more
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Determination of Core Losses in Open-Core Power Voltage Transformers
IEEE Access, 2018 Power voltage transformers (PVTs) are becoming increasingly present in different substation solutions on a world scale. Such units that are based on the open-core concept introduce several advantages in terms of transformer performance and reliability ...
Igor Ziger, Bojan Trkulja, Zeljko Stih
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Physical Modeling of Core Losses in Ferrite E-Cores
IEEE Open Journal of Power ElectronicsThe development of advanced power electronic converters requires an accurate calculation of core losses in magnetic devices. But the losses in the widely used ferrite cores depend on the shape of the core, especially above 10 kHz, meaning that core ...
Theophane Dimier, Jurgen Biela
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AIP Advances, 2016 In this paper, an interior permanent magnet synchronous motor (IPMSM) with a stator core made of amorphous magnetic material (AMM) is presented. The IPMSM is driven by a voltage source three-phase inverter with classical pulse width modulation (PWM ...
Nicolas Denis +3 more
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Core loss resistance impact on sensorless speed control of an induction motor using hybrid adaptive sliding mode observer [PDF]
Archives of Electrical Engineering, 2023 Induction motors (IMs) experience power losses when a portion of the input power is converted to heat instead of driving the load. The combined effect of copper losses, core losses, and mechanical losses results in IM power losses.
Tadele Ayana +2 more
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AIP Advances, 2018 We report core loss properties of permanent magnet synchronous motors (PMSM) with amorphous magnetic materials (AMM) core under inverter and sinusoidal excitations. To discuss the core loss properties of AMM core, a comparison with non-oriented (NO) core
Atsushi Yao +3 more
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Applied Sciences, 2022 A procedure for improving the energy, economic and environmental sustainability of the transformation houses in low-voltage distribution networks is described in this paper.
Vicente León-Martínez +5 more
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IEEE Access, 2023 The article proposes a method to measure core losses in magnetic elements for medium-frequency power electronics circuits working in conditions close to those in many real industrial circuits: supplied with square-wave voltage and working in linear ...
Maciej Chojowski +4 more
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