Results 21 to 30 of about 592,624 (324)

Performance analysis of three‐phase five‐leg transformers under DC bias using a new frequency‐dependent reluctance‐based model

open access: yesIET Generation, Transmission & Distribution, 2022
This paper presents a reluctance‐based model considering the frequency‐dependent loss nature of the windings for the analysis of three‐phase five‐leg transformers under grid voltages with direct current (DC) bias.
Sevket Canturk   +3 more
doaj   +1 more source

The absoption refrigerator as a thermal transformer [PDF]

open access: yes, 2009
The absorption refrigerator can be considered a thermal transformer, i.e. a device that is analogous to the electric transformer. The analogy is based on a correspondence between the extensive quantities entropy and electric charge and that of the ...
Carnot S   +4 more
core   +1 more source

Quantum transformations [PDF]

open access: yesPhysics Letters A, 1998
We show that the stationary quantum Hamilton-Jacobi equation of non-relativistic 1D systems, underlying Bohmian mechanics, takes the classical form with $\partial_q$ replaced by $\partial_{\hat q}$ where $d\hat q={dq\over \sqrt{1- ^2}}$. The $ ^2$ term essentially coincides with the quantum potential that, like $V-E$, turns out to be proportional to ...
Institute for Fundamental Theory, Department of Physics, University of Florida, Gainesville, FL 32611, USA ( host institution )   +2 more
openaire   +6 more sources

Voltage regulation considerations for the design of hybrid distribution transformers [PDF]

open access: yes, 2014
The future substation depends on finding a way to mitigate the effects of the drawbacks of the conventional legacy by employing the efficiency of the solid state switches [1].
Alqarni, M, Darwish, M, Radi, MA
core   +1 more source

Study on the Method of Calculating Temperature Rise of Transformer [PDF]

open access: yesE3S Web of Conferences, 2020
The internal temperature of the transformer is a key parameter to measure the thermal state of the transformer. The service life of the transformer generally depends on the life of the insulating material, and high temperature is the main reason why ...
Li Tao   +3 more
doaj   +1 more source

Buckling Strength Investigation for Power Transformer Winding Under Short Circuit Impact Considering Manufacture and Operation

open access: yesIEEE Access, 2023
Power transformers are inevitably subjected to external short circuit impact during their service period. The electromagnetic force generated by the fault current may cause winding destabilization and collapse.
Qiang Ou   +4 more
doaj   +1 more source

On the maximum transform and semigroups of transformations [PDF]

open access: yesBulletin of the American Mathematical Society, 1962
Abstract : Part of the Project RAND research program consists of basic supporting studies in mathematics. A problem frequently occurring in applications is that of determining the maximum or minimum value of a function subject to prescribed constraints.
Bellman, Richard, Karush, William
openaire   +3 more sources

Комбінований фільтрокомпенсуючий пристрій

open access: yesElektrotehnìka ta Elektroenergetika, 2010
Пропонується схема комбінованого фільтрокомпенсуючого пристрою. Основні переваги фільтра полягають в автоматичній зміні параметрів компенсації вищих гармонік з мінімальними втратами електричної енергії при передачі реактивної потужності, а також у ...
V. V. Kushch   +3 more
doaj   +1 more source

Monad transformers as monoid transformers

open access: yesTheoretical Computer Science, 2010
AbstractThe incremental approach to modular monadic semantics constructs complex monads by using monad transformers to add computational features to a pre-existing monad. A complication of this approach is that the operations associated to the pre-existing monad need to be lifted to the new monad.In a companion paper by Jaskelioff, the lifting problem ...
JASKELIOFF M, MOGGI, EUGENIO
openaire   +2 more sources

A Solid State Transformer model for power flow calculations [PDF]

open access: yes, 2017
This paper presents the implementation of a Solid State Transformer (SST) model in OpenDSS. The goal is to develop a SST model that could be useful for assessing the impact that the replacement of the conventional iron-and-copper transformer with the SST
Guerra Sánchez, Luis Gerardo   +1 more
core   +2 more sources

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