Results 31 to 40 of about 148,355 (280)

Core-less Multiphase Converter with Transformer Coupling [PDF]

open access: yes, 2010
A coupled multiphase converter where the coupling among the phases is done using core-less planar transformers is presented in this paper. Operating principle of the transformer-coupled converter has been presented previously in the literature and in ...
Alou Cervera, Pedro   +6 more
core   +1 more source

An alternative for reducing the layers in the construction of three-phase planar transformers [PDF]

open access: yes, 2012
A modified winding layout for three-phase transformers with PCB windings is proposed in this paper. This modified layout can be used in high current transformers with many PCB layers to simplify the fabrication process.
Asensi Orosa, Rafael   +5 more
core   +1 more source

Ensuring safe operating conditions for power transformers under thermal effects of short-circuit curre

open access: yesAdvanced Engineering Research, 2018
Introduction. Power transformers are the basic equipment of the industrial power systems. One of the key indicators of determining the service lifetime of the transformer including its performance characteristics is the condition and residual life of its
A. V. Kostyukov   +2 more
doaj   +1 more source

Transformer Monitoring and Protection in Dynamic Power Systems – A Review

open access: yesFrontiers in Energy Research, 2020
Increasing distributed energy resources, especially the renewable energy resources (RESs) are being installed across power systems these years. These RESs, including solar photovoltaic, wind turbines, etc., provide opportunities for operators to improve ...
Boqi Xie, Dongbo Zhao, Tianqi Hong
doaj   +1 more source

Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation

open access: yesIEEE Access, 2021
Geomagnetically induced current (GIC) is a ground end manifestation of geomagnetic disturbances (GMDs) and space weather arising from solar activity, which causes half-cycle saturation and represents a potential hazard for a stable and safe operation of ...
Z. M. Khurshid   +3 more
doaj   +1 more source

Developments in space power components for power management and distribution [PDF]

open access: yes, 1984
Advanced power electronic components development for space applications is discussed. The components described include transformers, inductors, semiconductor devices such as transistors and diodes, remote power controllers, and transmission ...
Renz, D. D.
core   +1 more source

A Recipe for State-and-Effect Triangles

open access: yes, 2017
In the semantics of programming languages one can view programs as state transformers, or as predicate transformers. Recently the author has introduced state-and-effect triangles which capture this situation categorically, involving an adjunction between
Jacobs, Bart
core   +1 more source

Partial Discharge Monitoring in Power Transformers Using Low-Cost Piezoelectric Sensors

open access: yesSensors, 2016
Power transformers are crucial in an electric power system. Failures in transformers can affect the quality and cause interruptions in the power supply.
Bruno Castro   +6 more
doaj   +1 more source

Design and operation of a protection system for transformers with superconducting windings [PDF]

open access: yes, 1985
Power transformers with superconducting windings need a protection system to prevent damage to the low-loss superconducting winding by an abnormally high current.
Klundert, L.J.M. van de   +2 more
core   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

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