Results 51 to 60 of about 946 (192)
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 +5 more
wiley +1 more source
Virtual Instrumentation and Educational Platform for Time-Varying Harmonics and Interharmonics Detection [PDF]
, 2010 [[abstract]]Selection of a suitable method among various techniques for assessment of harmonic and interharmonic components of a measured voltage or current waveform is not an easy task for the students.
C. I Chen;G. W. Chang
core
CURRENTS OF SINGLE-PHASE INDUCTION MOTORS SUPPLIED WITH VOLTAGE CONTAINING INTERHARMONICS
Scientific Journal of Gdynia Maritime UniversityIn real power systems the voltage waveform is not a perfect sine, but contains various additional frequency components, like harmonics, and in some power systems also subharmonics and interharmonics, that are components of frequency less than the ...
Marcin Pepliński, Piotr Gnaciński
doaj +1 more source
Energies, 2021 This paper presents an application of the IpDFT spectrum interpolation method to estimate the fundamental frequency of a power waveform. Zero-crossing method (ZC) with signal prefiltering was used as a reference method.
Józef Borkowski +2 more
doaj +1 more source
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 +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.) +2 more
core +1 more source
Energy Science &Engineering, Volume 13, Issue 9, Page 4539-4552, September 2025.ABSTRACT In this paper, a PLL‐less control technique for single‐phase grid‐connected voltage source converter (VSC) system is proposed that overcomes shortcomings in traditional PLL‐based and existing PLL‐less techniques. The proposed method avoids the use of a PLL and thus significantly decreases the computational complexity of the system as well as ...
Adnan Tan
wiley +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, +7 more
core +1 more source
Energy Science &Engineering, Volume 13, Issue 6, Page 2891-2900, June 2025.ABSTRACT The development of a dependable and secure protection system is critical for further integration of renewable energy sources into electrical energy systems. To address the bidirectional power flow and limited fault current contribution of 100% inverter‐based microgrids, this article presents a differential fault detection scheme (DFDI) based ...
Ali Mallahi, Iman Sadeghkhani
wiley +1 more source
Induction Motor Supplied with Voltage Containing Symmetrical Subharmonics and Interharmonics
, 2022 Sinusoidal voltage fluctuations can be considered a specific result of the occurrence of voltage subharmonics and interharmonics, which are components of low frequency or not being an integer multiple of the frequency of the fundamental voltage harmonic.
Marcin Pepliński +4 more
core +1 more source