Design and Analysis of Front Side Modular Multilevel Converter for Smart Transformer in 15 kV Arba Minch Distribution Network Using Diverse Controllers and Multicarrier Modulation... by Yalisho Girma Loaena, Ing. Getachew Biru, Chandra Sekha Reddy

“…The model is developed in MATLAB/Simulink, and its performance with respect to input side voltage harmonics, current harmonics, and output DC voltage value has been tested by carrying out several case studies under different controllers such as proportional integrator(PI), fuzzy inference system (FIS), and adaptive neuro fuzzy inference system (ANFIS) for obtaining reference signal for modulation. …”
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Model Predictive Current Control with Asymmetric Stacked Multilevel Inverter and LCL-Filter Based STATCOM by Mostafa Q. Kasim, Raaed Faleh Hassan

“…The STATCOM was used to inject reactive power to raise the source power factor to unity and reduce source current harmonics by injecting harmonic current. The proposed prototype could absorb 70% of source current harmonics, which is nearly 25% better than a conventional inverter, inject an appropriate amount of reactive power, and raise the source power factor to unity in two case scenarios. …”
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Transition from the chaotic turbulence to the turbulent structures by A. Kingsep

“…Weak turbulence, similar to incoherent light, may be represented as an ensemble of quasi-free quanta or Fourier harmonics. Unlike it, strongly turbulent state should be based on nonlinear structures. …”
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Solar Tide‐like Signatures in the Ionospheric Total Electron Content During the 2018 Sudden Stratospheric Warming Event by Han Ma, Maosheng He, Libo Liu, Wenbo Li, Yuyan Yang, Ruilong Zhang, Yiding Chen, Huijun Le, Hui Zhang, Guozhu Li

“…The results reveal that after the SSW onset, the third harmonic enhances and the fourth harmonic weakens at all selected receivers. …”
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Study on Intelligent Compaction-Equipment Logistics Scheduling and Propagation Characteristics of Vibration Wave in Nonlinear Systems with Multistability Based on Field Test by Yixuan Han, Changwei Yang, Degou Cai, Hongye Yan, Hailing Zeng

“…Third, in the propagation process, with the increase in buried depth, the amplitude of fundamental, primary, secondary, until fifth harmonics decreases exponentially (R2>0.9), and the concrete functional relationship among different amplitudes of harmonics can be summarized as y = Ae−BX; fourth, the vibration energy is mainly concentrated near 10–30 Hz in the vibratory roller, but when the vibration wave propagates from vibratory roller⟶filling material, the vibration energy gradually decreases with the increase in depth, and the marginal spectrum gradually changes from one peak to two peaks, that is, 30–50 Hz and 50–100 Hz; fifth, the vibration energy in the vibrational wheel is distributed averagely in the compaction process, and the effective compaction time is two seconds, which will be helpful for revealing the propagation characteristics of vibration wave, optimizing the compaction quality control models and providing some support for the development of intelligent compaction theory of railway subgrade.…”
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Interior and Gravity Field Models for Uranus Suggest a Mixed-composition Interior: Implications for the Uranus Orbiter and Probe by Zifan Lin, Sara Seager, Benjamin P. Weiss

“…We confirm that high degrees of mixing are required for Uranus interior models to be consistent with the J _2 and J _4 gravity harmonics measured by Voyager 2. Empirical models, which have smooth density profiles that require extensive mixing, can reproduce the Voyager 2 measurements. …”
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NUCLEOSOME ORGANIZATION IN PLANT DNA SATELLITES by V. N. Babenko, K. O. Kutashev, V. F. Matvienko

“…As many as 50 % of the monomers have a periodicity of DNA bends in the vicinity of 170 bp, fitting the wrapping length of a single nucleosome within two highest-order harmonics in the DNA curvature profile. The nucleosome positioning scheme in subtelomeric satellites in plants differs from that in centromeric satellites.…”
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The complete ellipsoidal shell-model in EEG imaging

“…The solution of this multitransmission problem is given analytically in terms of elliptic integrals and ellipsoidal harmonics, in such way that makes clear the effect that each shell has on the next one and outside of the head. …”
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Operation Optimization of Microgrid System Based on Intelligent System Model by Jian Kang

“…In addition, this paper adopts the method of extracting the harmonic current command in the synchronous coordinate system based on the band-pass filter composed of SOGI and combines the RDFT algorithm to determine the number of harmonics that can be compensated and the degree of compensation for the harmonic number. …”
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Analysis of the Vibration Characteristic for Heavy Duty Gear Under Different Load Levels by Guan Xiaoyang, Long Zhenhai

“…The vibration acceleration signals of two gearboxes under the load condition of 1 600 ³ 000 N·m are collected.The changes of time domain characteristic parameters and the sensitivity of gear meshing frequency and harmonics amplitude to the load change are analyzed.The results show that the gear meshing frequency amplitude is approximately linear with the load level.Both of the harmonic frequency 3fmof gearbox A,the harmonic frequency 3fm,4fmand high order harmonic frequency 10fm13 fmof gearbox B are sensitive to the load level.The results have some significance for the further study of vibration characteristic on heavy duty gear transmission.…”
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Five-Phase Modular External Rotor PM Machines with Different Rotor Poles: A Comparative Simulation Study by A. S. Abdel-Khalik

“…The preferred slot and pole number combinations eliminate the effect of low-order harmonics in the stator magnetomotive force and thereby the vibration and stray loss are reduced. …”
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Efficient Prediction of Superlattice and Anomalous Miniband Topology from Quantum Geometry by Valentin Crépel, Jennifer Cano

“…In the absence of electronic interactions, our analysis provides a systematic rule to find the Chern number of the superlattice-induced miniband starting from the harmonics of the applied potential and a few material-specific coefficients. …”
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Spectral study of COVID-19 pandemic in Japan: The dependence of spectral gradient on the population size of the community. by Ayako Sumi, Masayuki Koyama, Manato Katagiri, Norio Ohtomo

“…For all prefectures, many spectral lines observed in each PSD can be fully assigned to a fundamental mode and its harmonics and subharmonics, or linear combinations of a few fundamental periods, suggesting that the COVID-19 data are substantially noise-free. …”
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Links between Main Frequencies of Established Rotating Stall and Rotational Frequencies and/or Blade Passing Frequencies by Yeshayahou Levy, Asaf Modelevsky, Joseph Pismenny, Jens Friedrichs, Detlev Wulff

“…The experimentally received characteristics of power spectral density of pressure signals also show the presence of components with combinations of blade passing frequency and different harmonics of main rotating stall frequency.…”
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Evidence of $\phi_0$-Josephson junction from skewed diffraction patterns in Sn-InSb nanowires by B. Zhang, Z. Li, V. Aguilar, P. Zhang, M. Pendharkar, C. Dempsey, J. S. Lee, S. D. Harrington, S. Tan, J. S. Meyer, M. Houzet, C. J. Palmstrom, S. M. Frolov

“…The effect modeled is the $\phi_0$-Josephson junction with higher-order Josephson harmonics. The system is of interest for Majorana studies: the effects are either precursor to or concomitant with topological superconductivity. …”
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Effects of ADC Nonlinearity on the Spurious Dynamic Range Performance of Compressed Sensing by Rongzong Kang, Pengwu Tian, Hongyi Yu

“…It presents intuitive yet quantitative insights into the harmonics of quantization output of AIC, and the effect of other AIC nonlinearity on the spurious dynamic range (SFDR) performance is also analyzed. …”
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A Novel Engine Mount with Semi-Active Dry Friction Damping by M. Lorenz, B. Heimann, V. Härtel

“…The control policy imitates viscous damping forces that exert a minimum of harmonics. Damping is activated only when necessary. …”
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ANALYSIS ON DYNAMIC CHARACTERISTICS OF TOOTH ROOT CRACK OF GEAR DRIVE SYSTEM UNDER VARIABLE LOAD EXCITATION by SHI PeiMing, ZHAO Na, LIANG Kai, HAN DongYing

“…Analysis shows that,under variable load excitation,the vibration wave forms are very similar to the variable load excitation; Cracks caused by the impact phenomenon on the waveform and meshing frequency and its harmonics appear sideband.Sideband spectrum of the meshing frequency is the rotating frequency of the fault gear; Under variable load excitation,the frequency components of the low frequency is related to the variable load excitation.…”
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Frequency and Time Series Analysis of Surge Arrester in Power Distribution Systems by Alireza Zabihi, Mohammad Parhamfar

“…By integrating these two analyses, engineers can enhance their understanding of surge arrester behavior during short circuits, refine design strategies to address issues like resonance and harmonics, and ensure reliable system protection against overvoltage occurrences.…”
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Simulation and Analysis of the Loss of Hybrid Magnetization Magnetic Gear Composite Motor by Bangjing Zhang, Zina Zhu, Di Wu, Rui Zhang

“…The loss of a hybrid magnetized magnetic gear composite motor is studied， and the magnetic field and air gap magnetic density and harmonics of the hybrid magnetized magnetic gear composite motor and the radial magnetized magnetic gear composite motor are compared and analyzed. …”
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