FLEXIBLE SYNCHRONOUS REGULATION OF POWER ELECTRONIC BLOCKS OF TRANSFORMER-BASED PHOTOVOLTAIC STATIONS by OLESCHUK, Valentin

“…The proposed control and PWM techniques ensure the elimination of even-order harmonics and subharmonics in spectra of voltage at inverter-side windings of power transformer, helping to increase the operating efficiency of inverter-based PV stations. …”
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Generalized α-Attractor Models from Elementary Hyperbolic Surfaces by Elena Mirela Babalic, Calin Iuliu Lazaroiu

“…For each elementary surface, we discuss its decomposition into canonical end regions and give an explicit construction of the embedding into the Kerekjarto-Stoilow compactification (which in all three cases is the unit sphere), showing how this embedding allows for a universal treatment of globally well-behaved scalar potentials upon expanding their extension in real spherical harmonics. For certain simple but natural choices of extended potentials, we compute scalar field trajectories by projecting numerical solutions of the lifted equations of motion from the Poincaré half plane through the uniformization map, thus illustrating the rich cosmological dynamics of such models.…”
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Design of Self-Tuning Regulator Adaptive Cascade Control for Power Factor Correction in Boost Rectifier by Chiyo Saito, Connor Davis

“…The widespread use of electronic devices in various applications has led to increased harmonic distortion in power lines, resulting in a decreased power factor and reduced overall power quality. …”
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Analysis of the Matching Media Effects by Microwave Field Distribution Simulations for the Cylindrically Layered Human Arm Model by Tanju Yelkenci

“…In this context, first, the electromagnetic scattering problem related to the layered cylindrical model in question was solved analytically using cylindrical harmonics. Then, based on this solution, a frequency-dependent functional in terms of the electromagnetic parameters of the matching medium was defined, and the parameters that minimize this functional were determined through the graphs of this functional. …”
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Development of Shunt-Type Three-Phase Active Power Filter with Novel Adaptive Control for Wind Generators by Ming-Hung Chen

“…The performance of the system was first simulated using MATLAB/Simulink, and the possibility of an adaptive digital low-pass filter eliminating current harmonics was confirmed in steady and transient states. …”
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Experimental Analysis of an Active Vibration Frequency Control in Gearbox by Han Wang, Feng Zhang, Haiyan Li, Wenhao Sun, Shunan Luo

“…The experiments performed show 10 dB reduction in housing vibrations at certain targeted mesh harmonics over a range of operating speeds.…”
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Particle Swarm Optimization Based Sliding Mode Controller for Performance Improvement of Unified Power Quality Controllers Inverters by Mohammad Amin Heidari, Mehdi Nafar, Taher Niknam

“…The obtained results show the effectiveness of the proposed control compared to the standard sliding mode controller in reducing harmonics, reducing voltage imbalance and improving other power quality indicators.…”
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Assessment of Power Quality for Large Scale Utility Grid-Connected Solar Power Plant Integrated System by Ahmed Haji, Mehdi F. Bonneya

“…The study takes into account the effect of solar system power variation as well as the PV inverter's introduction of penetrating harmonics into the system. The simulation of the system is done in MATLAB software using the SIMULINK environment and is tested by the Pysyst program. …”
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A Novel AC Green Plug Switched Filter Scheme for Low Impact Efficient V2G Battery Charging Stations by Albe M. Bloul, Adel M. Sharaf, Hamed H. Aly, Jason Gu

“…The technique, which employs modified multimode weighted charging modes for fast charging, improved power quality, and minimal inrush currents, results in reduced voltage transients on the DC side and less harmonics on the AC side. An intercoupled DC-AC capacitor interface that features dual complementary switching modes is used by the switched modulated filter as a way to provide optimal pulsing in both the tuned-arm filter and capacitive compensator modes of operations. …”
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Design and Dynamic Modelling of a Hybrid Power System for a House in Nigeria by Lawrence O. Aghenta, M. Tariq Iqbal

“…Dynamic simulation of the proposed PV system component of the hybrid power system is carried out in MATLAB/Simulink environment to study the power quality, harmonics, load impact, voltage transients, etc. of the system, and the simulation results are presented in the paper.…”
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Prediction of Landslide Displacement Based on EMD-TAR Combined Model by CHEN Xi, GAO Yaping, TU Rui

“…This study aims to more accurately predict the displacement changes of landslides with nonlinear volatility development.The empirical mode decomposition is first employed to process the time series of monitoring surface displacement of a landslide,and then the irregularly changing displacement series is converted into modal components with regular changes,which generates displacement components at different frequencies.Each component is predicted separately so that the mutual influence of errors can be avoided.The comprehensive prediction of the changing trend of displacement series is based on the prediction of the changing trends of all components.The improved threshold autoregressive model able to well describe non-stationary harmonics is used to predict the landslide displacement components.Finally,the modal superposition yields the final predicted displacement.In this way,a combined prediction model based on empirical mode decomposition and threshold autoregressive model is established,and its prediction accuracy is verified with Baishuihe landslide data.Compared with a BP neural network model and a long short-term memory network model,the proposed model has a high prediction accuracy,which provides a new method for the prediction of landslide displacement.…”
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ELECTRICITY METER WITH THE FACILITY TO DETERMINE THE QUALITY OF THE ELECTRICITY SUPPLIED by DAN ROTAR, GEORGE CULEA

“…The developed system determines the power consumed and the main elements that define the quality of electricity: harmonics and other deviations from the frequency of nominal power supply, flicker, voltage gaps, voltage variations, transient surge, temporary surge, etc. …”
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Grid-Connection Half-Bridge PV Inverter System for Power Flow Controlling and Active Power Filtering by Chih-Lung Shen, Jye-Chau Su

“…Furthermore, the system eliminates current harmonics and improves power factor simultaneously. …”
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EARLY DETECTION OF GEAR TOOTH CRACKING FAULT BASED ON RESONANCE BAND AMPLITUDE-PHASE DEMODULATION TECHNIQUE by SUN ShouBao, GUO Yu, WU Xing

“…It’s a method that taking the resonance frequency as carrier frequency instead of meshing harmonics,hence the low-frequency interference can be suppressed. …”
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FPGA Techniques Based New Hybrid Modulation Strategies for Voltage Source Inverters by L. U. Sudha, J. Baskaran, S. A. Elankurisil

“…The main tale of this proposed method is to optimize a specific performance criterion, such as minimization of the total harmonic distortion (THD), lower order harmonics, switching losses, and heat losses. …”
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Investigating the Effect of Winding Structures in Dynamic Wireless Power Transmission in Electric Vehicle Applications by M. Rafinejad, A. Ghayebloo

“…In this paper, the winding function method is used for more accurate modeling of coils in terms of spatial harmonics and calculation of their self and mutual inductances by changing the location of the vehicle. …”
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Stator and Rotor Faults Diagnosis of Squirrel Cage Motor Based on Fundamental Component Extraction Method by Guoqing An, Hongru Li

“…However, in the case of interturn short circuit in stator, the traditional symmetrical component method has lost the precondition due to the harmonics and noise; the negative sequence component (NSC) is hard to be obtained accurately. …”
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Sliding-Mode Control of a Dc/Dc Postfilter for Ripple Reduction and Efficiency Improvement in POL Applications by S. I. Serna-Garcés, R. E. Jiménez, C. A. Ramos-Paja

“…Finally, the proposed solution significantly reduces the current harmonics injected into the load, and at the same time, it improves the overall electrical efficiency. …”
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Analysis of the Influence of Progressive Wear of Helical Gear on Gear Vibration Characteristic by Xiuquan Sun, Tie Wang, Ruiliang Zhang, Fengshou Gu

“…The variation of the amplitudes of the gear meshing frequency and its harmonics demonstrates that the wear causes an increase in gear vibrations. …”
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Power Quality Improvement by Unified Power Quality Conditioner Based on CSC Topology Using Synchronous Reference Frame Theory by Rajasekaran Dharmalingam, Subhransu Sekhar Dash, Karthikrajan Senthilnathan, Arun Bhaskar Mayilvaganan, Subramani Chinnamuthu

“…UPQC is used to mitigate the power quality problems like harmonics and sag. The shunt and series active filter performs the simultaneous elimination of current and voltage problems. …”
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