Results 41 to 50 of about 819 (196)

Effect of Interharmonics on Flicker of Fluorescent Lamps [PDF]

2018 China International Conference on Electricity Distribution (CICED), 2018
In order to analyze the inter-harmonic affections on the voltage flicker, the relationship between the inter-harmonics and flicker analysis are carried out. In order to be able to accurately determine the level of inter-harmonics to make the electric light flicker, inter-harmonic-flicker limit curve drawing method based on the voltage flicker ...
Huiyan Cao, Tianci Li, Yuanlin Song, Bo Zhu, Xiaolei Yang, Chengye Yuan   +5 more
openaire   +2 more sources

Monitoring and Suppression Strategies of the Interharmonic in the Grid-Connected Photovoltaic System: A Review

Energies
With the continuous advancement of the green and low-carbon transformation of energy structures in countries around the world, renewable energy sources such as solar energy are receiving increasingly widespread attention.
Mingxuan Mao, Yuhao Tang, Jiahan Chen, Zhao Xu, Haojin Sun, Chengqi Yin   +5 more
doaj   +1 more source

Estimation of Electric Power Quantities for Nonsinusoidal Conditions Based on Operating Point Fluctuations

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes an operating point fluctuations (OPF) framework to describe nonsinusoidal, nonstationary waveforms by modeling distortions as amplitude and phase fluctuations of a time‐varying fundamental component. Based on OPF, single‐phase and three‐phase power quantity expressions consistent with IEEE Std. 1459–2025 are derived under stationary
Yang Li, Guobing Song, Yiming Ren, Yuxuan Zhang   +3 more
wiley   +1 more source

Harmonic and Interharmonic Measurement Method Using Two-Fold Compound Convolution Windows and Zoom Fast Fourier Transform

Energies
With the rapidly increasing penetration of new energy resources, the power grid faces significant threats from harmonics. To measure and suppress these harmonics, numerous harmonic measurement methods have been proposed.
Xiangui Xiao, Lei Zhao, Shengjun Zhou, Haijun Liu, Zhong Fu, Dan Hu   +5 more
doaj   +1 more source

A Stability Enhancement Method for Grid‐Forming Inverters With Inductor Current Feedforward and Coupling‐Enhancing Control

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
A sequence impedance model of grid‐forming inverters is developed; a grid‐forming inverter's stabilisation strategy combining inductor current feedforward and coupling‐enhancing techniques is presented for strong‐grid applications. ABSTRACT Although the stable operation of grid‐forming inverters (GFMIs) in weak grids is well‐documented, undesirable ...
Xu Wu, Huafeng Xiao, Mingming Shi, Cunwen Tang, Wei Wang, Ming Cheng   +5 more
wiley   +1 more source

Modeling and Nonlinear Dynamic of Dual‐Rotor System With Misalignment During Aircraft Climbing Flight

Shock and Vibration, Volume 2026, Issue 1, 2026.
Misalignment of the dual‐rotor system in aeroengines may lead to abnormal vibration and rubbing faults between the rotor and the stator. The dynamic model of the dual‐rotor system with misalignment during aircraft climbing flight is presented in this paper. The dynamic equation of the dual‐rotor system is obtained from the Lagrange equation.
Guofang Nan, Jinrui Hu, Jingya Yao, Chen Zhang, Bodong Zhang, Antonio Giuffrida   +5 more
wiley   +1 more source

Optimal control of single‐phase microgrid with photovoltaic and energy storage for improving operation performance and seamless state transition

Energy Conversion and Economics, Volume 6, Issue 5, Page 324-340, October 2025.
Abstract Under voltage sags, swells, stochastic load profiles and harmonic voltage distortion, conventional synchronisation mechanisms often fail to track the grid voltage immediately and accurately, leading to degraded control performance and potential power quality violations.
Shiv Shambhu Choudhary, Tripurari Nath Gupta   +1 more
wiley   +1 more source

Improved processing of harmonics and interharmonics by time-domain averaging

, 2005
The harmonic and interharmonic analysis recommendations are contained in the latest International Electrotechnical Commission (IEC) standards on power quality.
Himmel, Jörg (Prof.), Bonfig, Karl Walter, Liu, Zhongdong   +2 more
core   +1 more source

DEEP LEARNING FOR PATTERN RECOGNITION OF INTERHARMONICS IN TIME-SERIES AND SPECTROGRAMS

, 2021
This work applies an unsupervised deep feature learning to finding patterns of interharmonics. The main objectives of this work are to provide an additional graphical tool to handle two distinct data inputs: (a) individual interharmonics components in ...
Bollen, Math,, V. Ravindran, S. Rönnberg, de Oliveira, Roger Alves,, R. A. Oliveira, M. H. J. Bollen, Ravindran, Vineetha,, Rönnberg, Sarah,   +7 more
core   +1 more source

Accurate Analysis of Harmonic Transmission of Line Commutated Converter Considering Firing Angle Fluctuation

IEEE Access, 2020
Line commutated converter (LCC) has been widely applied in hybrid high voltage direct current (HVDC) transmission system, where the modular multilevel converter (MMC) is applied as receiving end and may induce low order harmonics in DC-link voltage ...
He Huang, Junpeng Ma, Shunliang Wang, Yuqing Dong, Ning Jiao, Tianqi Liu   +5 more
doaj   +1 more source