Results 31 to 40 of about 32,552 (250)

Experimental comparison of sinusoidal motion and non-sinusoidal motion of rise-dwell-fall-dwell in a Stirling engine

open access: yesJournal of Mechanical Engineering and Sciences, 2020
The Stirling engine is deemed to play a role in the near future of power generation. However, there is a large performance difference between the real and ideal Stirling engine.
H.M. Wong, S.Y. Goh
doaj   +1 more source

Relationship between Buchholz’s Apparent Power and Instantaneous Power in Three-Phase Systems

open access: yesApplied Sciences, 2020
Similarly to how Steinmetz developed his theory of alternating current in single-phase sinusoidal systems, a few formal relationships between expressions of the instantaneous and Buchholz’s apparent power in three-phase systems were identified in ...
Vicente León-Martínez   +3 more
doaj   +1 more source

Analysis of Electric Power Quantities of Road LED Luminaires under Sinusoidal and Non-Sinusoidal Conditions

open access: yesEnergies, 2019
The paper presents the results of laboratory tests concerning the measurements of electrical parameters of road lighting luminaires. These measurements were focused on determining the dependence of the electrical parameters of the luminaires versus the ...
Roman Sikora, Przemysław Markiewicz
doaj   +1 more source

Geometric Algebra Framework Applied to Symmetrical Balanced Three-Phase Systems for Sinusoidal and Non-Sinusoidal Voltage Supply

open access: yesMathematics, 2021
This paper presents a new framework based on geometric algebra (GA) to solve and analyse three-phase balanced electrical circuits under sinusoidal and non-sinusoidal conditions. The proposed approach is an exploratory application of the geometric algebra
Francisco G. Montoya   +4 more
doaj   +1 more source

Numerical Study on the Effect of Non-Sinusoidal Motion on the Energy Extraction Performance of Parallel Foils

open access: yesApplied Sciences, 2019
The effect of non-sinusoidal motion which influences the energy extraction performance of foil is considered in this paper. Two oscillation motions, the combined non-sinusoidal plunging and sinusoidal pitching motion, as well as the combined non ...
Yulu Wang, Fahui Zhu, Yonghui Xie
doaj   +1 more source

Reactive Power and Energy Instrument’s Performance in Non-Sinusoidal Conditions Regarding Different Power Theories

open access: yesMeasurement Science Review, 2023
It is important to conduct the examination of reactive power and energy instruments in normal operating conditions, due to their place in the regulated trade of electrical energy.
Demerdziev Kiril, Dimchev Vladimir
doaj   +1 more source

A Signal Theory of Instantaneous and Average Power

open access: yesIEEE Access
In this paper the standard formulas for instantaneous and average power in sinusoidal systems are generalized to non-sinusoidal systems by appealing to the Hilbert Transform and Bedrosian’s Theorem for a general class of non-sinusoidal currents ...
Dongliang Duan, Louis L. Scharf
doaj   +1 more source

Predicting the influence of the non-sinusoidal network mode on power transformers [PDF]

open access: yesE3S Web of Conferences, 2019
The parameters of electrical network modes often do not meet the requirements of Russian GOST 32144-2013 and the guidelines of Vietnam. In the actual operating conditions while there is the non-sinusoidal mode in electrical networks voltage and current harmonics are present.
Van Cuong Ngo, Kovernikova Lidiia I.
openaire   +2 more sources

Optimal Design of C-Type Filter in Harmonics Polluted Distribution Systems

open access: yesEnergies, 2022
This paper aims to find the optimal size of parameters of a C-type filter in a non-sinusoidal system using a new optimization method called the Archimedes optimization algorithm (AOA).
Rohollah Tamaskani   +2 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

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