Results 21 to 30 of about 145,387 (305)

Practical Evaluation of Loss Reduction in Isolated Series Resonant Converter with Fixed Frequency Modulation

open access: yesEnergies, 2022
Nowadays, power converters with reduced cost, compact size and high efficiency are evolving to overcome the emergent challenges of renewable energy integrations.
Danish Khan   +5 more
doaj   +1 more source

Accurate Measurement of Dynamic on-State Resistances of GaN Devices under Reverse and Forward Conduction in High Frequency Power Converter [PDF]

open access: yes, 2020
Because of trapped charges in GaN transistor structure, device dynamic ON-state resistance RDSon is increased when it is operated in high frequency switched power converters, in which device is possibly operated by zero voltage switching (ZVS) to reduce ...
Evans, Paul   +4 more
core   +4 more sources

CONDUCTIVE HEARING LOSS IN BIGHORN SHEEP [PDF]

open access: yesJournal of Wildlife Diseases, 1995
In January 1993 we simulated a conductive hearing loss in three Mexican bighorn sheep (Ovis canadensis mexicana) by placing bone wax or saline solution in their ear canals. Our objective was to test whether lesions of the external auditory canal caused by psoroptic mites (Psoroptes ovis) may lead to conductive hearing loss in bighorn sheep. We assessed
Norrix, L. W.   +4 more
openaire   +3 more sources

A Modified Topology of Two-Switch Buck-Boost Converter

open access: yesIEEE Access, 2017
Two-switch buck-boost (TSBB) is one of the non-isolated dc-to-dc converters that can change its mode from among buck, boost, and buck-boost modes. Changing its mode is possible by controlling gate signals. This paper presents a novel modified topology of
Byunghee Moon   +3 more
doaj   +1 more source

Evaluation of the magnetization direction effects on ferrite PM brushless fractional machines [PDF]

open access: yes, 2012
Permanent magnets are frequently adopted in small brushless machines for automotive applications. Normally anisotropic ferrites, but some research on bonded magnets is being carried on.
Ferraris, Luca   +3 more
core   +1 more source

Analytical Calculation of the Residual ZVS Losses of TCM-Operated Single-Phase PFC Rectifiers

open access: yesIEEE Open Journal of Power Electronics, 2021
Triangular-current-mode (TCM) modulation guarantees zero-voltage-switching across the mains cycle in AC-DC power converters, eliminating hard-switching with a minor ${\approx} {30}{\%}$ penalty in conduction losses over the conventional continuous ...
Michael Haider   +6 more
doaj   +1 more source

The measurement of very low conductivity and dielectric loss in XLPE cables: A possible method to detect degradation due to thermal aging [PDF]

open access: yes, 2011
The dielectric response of crosslinked polyethylene (XLPE) insulated, miniature power cables, extruded with inner and outer semicons, was measured over the frequency range 10-4 to 104 Hz at temperatures from 20 to 100 °C.
Dissado, L. A.   +4 more
core   +1 more source

Normally-Off AlGaN/GaN HEMTs With a Low Reverse Conduction Turn-On Voltage

open access: yesIEEE Access, 2023
Third quadrant operation is vital for power applications such as synchronous DC-DC converters and inverters, which require a low drain-source voltage drop to reduce conduction losses.
Dai-Jie Lin   +5 more
doaj   +1 more source

A Bidirectional DC–DC Converter With Direct Power Transfer

open access: yesIEEE Open Journal of Power Electronics
This paper presents a novel bidirectional DC–DC converter for several applications such as energy storage systems. The proposed power circuit topology not only has inherent soft switching but also offers reduced conduction losses. The reduction in
Sajjad Goudarzitaemeh, Majid Pahlevani
doaj   +1 more source

Efficiency analysis of wide band-gap semiconductors for two-level and three-level power converters [PDF]

open access: yes, 2019
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Collado Escolano, Alfonso   +4 more
core   +1 more source

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