Results 11 to 20 of about 38,040 (262)

Harmonic Modeling and Analysis for Parallel 12-Pulse Rectifier under Unbalanced Voltage Condition in Frequency-Domain

open access: yesEnergies, 2022
This paper treats a parallel 12-pulse rectifier as the study subject. The influence of unbalanced terminal voltage, the triggering angle, as well as the commutation angle of a thyristor-controlled rectifier circuit are considered in switching functions ...
Guochao Qian   +5 more
doaj   +1 more source

Carathéodory Convergence and Harmonic Measure [PDF]

open access: yesPotential Analysis, 2018
We give several new characterizations of Caratheodory convergence of simply connected domains. We then investigate how different definitions of convergence generalize to the multiply-connected case.
Ilia Binder   +2 more
openaire   +3 more sources

Optimal Harmonic Measuring Device Placement in Distribution Networks in Consideration of Topology Changes

open access: yesIEEE Access, 2020
As effective measures of energy savings and emission reduction, non-linear loads, such as variable-frequency drives, are widely used. However, the problem of harmonic pollution in power systems is becoming increasingly severe.
Zhihua Zhang, Zeqi Qu, Jie Yang
doaj   +1 more source

Generation of second harmonic component of fault current in a doubly‐fed induction generator and mitigation measures for transformer protection

open access: yesIET Renewable Power Generation, 2021
The transient characteristics of short‐circuit current (SCC) in doubly‐fed induction generator (DFIG) are quite different from the widely researched conventional synchronous machines.
Tao Zheng   +5 more
doaj   +1 more source

On the Riemann-Hilbert problem in multiply connected domains

open access: yesOpen Mathematics, 2016
We proved the existence of multivalent solutions with the infinite number of branches for the Riemann-Hilbert problem in the general settings of finitely connected domains bounded by mutually disjoint Jordan curves, measurable coefficients and measurable
Ryazanov Vladimir
doaj   +1 more source

New approach to modeling the nonlinear loads [PDF]

open access: yesE3S Web of Conferences, 2019
Parameters of operating conditions of electric power systems shall ensure efficient and reliable operation of both power generating companies and of consumers, which to a great extent depends on power quality.
Kovernikova L.I., Luong Van Chung
doaj   +1 more source

A Novel Method for Estimating and Balancing the Second Harmonic Error of Cylindrical Fused Silica Resonators

open access: yesMicromachines, 2021
The cylindrical resonator gyroscope (CRG) is a type of Coriolis vibratory gyroscope which measures the angular velocity or angle through the precession of the elastic wave of the cylindrical resonator.
Yunfeng Tao   +5 more
doaj   +1 more source

Seven Means, Generalized Triangular Discrimination, and Generating Divergence Measures

open access: yesInformation, 2013
Jensen-Shannon, J-divergence and Arithmetic-Geometric mean divergences are three classical divergence measures known in the information theory and statistics literature.
Inder Jeet Taneja
doaj   +1 more source

An Adaptive Virtual Impedance Method for Grid-Connected Current Quality Improvement of a Single-Phase Virtual Synchronous Generator under Distorted Grid Voltage

open access: yesSensors, 2023
The proportion of distributed generation systems in power grids is increasing, leading to the gradual emergence of weak grid characteristics. Moreover, using voltage-sourced grid-connected inverters can enhance the stability of a weak grid.
Caomao Zhong   +3 more
doaj   +1 more source

Statistical Hyperbolicity for Harmonic Measure [PDF]

open access: yesInternational Mathematics Research Notices, 2020
Abstract We consider harmonic measures that arise from random walks on the mapping class group determined by probability distributions that have finite first moments with respect to the Teichmüller metric and whose supports generate nonelementary subgroups.
Azemar, Aitor   +2 more
openaire   +4 more sources

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