Results 21 to 30 of about 1,206,578 (296)

A meta‐heuristic capacitor placement framework for distribution grids using modal resonance analysis

open access: yesIET Renewable Power Generation, 2022
Shunt capacitors are usually installed in distribution grids for power factor correction. On the other hand, the number of harmonic‐producing sources such as wind turbines (WTs), photovoltaic (PV) panels, storage units, and electronic loads is rapidly ...
Hossein Farzin, Mehdi Monadi
doaj   +1 more source

Hybrid Filters To Damp Harmonic Resonance In Power Transmission Systems

open access: yesEletrônica de Potência, 2006
Problems related to harmonic propagation in transmission systems have been noticed in the last years. Passive filters, commonly used to attenuate noncharacteristic harmonics in HVDC systems, stay at risk of disconnection from the system due to ...
Lucas F. Encarnação   +4 more
doaj   +1 more source

ON THE CONVERGENCE OF THE EULER HARMONIC SERIES [PDF]

open access: yes, 2000
The aim oj this article is to study the convergence oj the Euler harmonic series. Firstly, the results concerning the convergence oj the Smaralldache and Erdos harmonic junctions are reviewed Secondly, the Euler harmonic series is proved to be convergent
Tabirca, Tatiana, Tabirca, Sabin
core   +1 more source

Harmonic resonances in granular plane Couette flow [PDF]

open access: yesEPJ Web of Conferences
The shearbanding instability patterns and bifurcations have been well-studied in granular plane Couette flow using the single-mode Landau equations. However, shearbanding modes interact with each other and undergo harmonic resonances.
Biswas Lima, Shukla Priyanka
doaj   +1 more source

Second harmonic resonance in electrohydrodynamics [PDF]

open access: yesQuarterly of Applied Mathematics, 1986
Summary: The stability of the nonlinear waves on the surface of a perfectly conducting fluid in the presence of an applied electric field was investigated by the second author, \textit{R. K. Jndia} and the first author [ibid. 39, 23-32 (1981; Zbl 0464.76009)].
Malik, S. K., Kant, Rama
openaire   +1 more source

Reducing Harmonic Voltage At Industrial Area Distribution Network Using Network Configuration Management [TK1007. S526 2008 f rb]. [PDF]

open access: yes, 2008
Syarikat pembekal elektrik diperlukan untuk mengekalkan tahap voltan harmonik di dalam sistem di bawah batas piawaian. Electric utility company is required to maintain harmonic voltage level in the system below the standard’s ...
Latif, Mohd Shahed
core   +1 more source

Resonance propagation analysis for inverter‐dominated multi‐AC‐bus systems

open access: yesIET Renewable Power Generation, 2021
Harmonic resonance in a system with multiple inverters connecting to a single AC bus has been well studied in previous literature. However, in reality, a large number of distributed inverters are often classified into several groups using a few matching ...
Beihua Liang, Jinwei He, Chengshan Wang
doaj   +1 more source

A Novel Suppression Method for Low-Order Harmonics Causing Resonance of Induction Motor

open access: yesMachines, 2022
In the motor drive system of electric vehicles, there are some nonlinear factors, such as the deadtime and the conduction voltage drop of switching devices, which will generate low-order harmonics of the stator current and the torque ripple.
Pengyun Song   +4 more
doaj   +1 more source

Harmonic diffeomorphisms of noncompact surfaces and Teichmüller spaces [PDF]

open access: yes, 2002
Let g : M -> N be a quasiconformal harmonic diffeomorphism between noncompact Riemann surfaces M and N. In this paper we study the relation between the map g and the complex structures given on M and N.
Markovic, V. (Vladimir)   +1 more
core   +1 more source

Analysis of harmonic resonance mechanism of PV power plant [PDF]

open access: yesE3S Web of Conferences, 2019
Great amount of PV inverters connected with the PV power plant causes the power system to become electronically power and affects the operation mode of the traditional power system.
Jing Shi   +3 more
doaj   +1 more source

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