A Frequency-Aware Transformer for Multiscale Fault Diagnosis in Electrical Machines by Yurim Choi, Inwhee Joe

“…This study introduces a novel transformer-based fault diagnosis paradigm, contributing to the stable operation of power systems and improving maintenance efficiency.…”
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Seasonal and periodic patterns in US COVID-19 mortality using the Variable Bandpass Periodic Block Bootstrap. by Edward L Valachovic, Ekaterina Shishova

“…Results show that both methods find a significant seasonal component, but the Variable Bandpass Periodic Block Bootstrap produces smaller confidence intervals and only the Variable Bandpass Periodic Block Bootstrap found significant components at the second through the fifth harmonics of the seasonal component, as well as weekly component. …”
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Search Coil-Based Startup Angle and Rotor Position Estimation for Enhanced Full-Speed-Range Motor Drives by Hsien-Yuan Hsu, Min-Fu Hsieh

“…Performance was assessed across key metrics, including current harmonics, efficiency, and load-handling capability. …”
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An isolated asymmetrical AC-DC converter based brushless direct current motor drive without bridge rectifier and low pass filter by Tanmay Shukla

“…The input inductor of the NC converter takes care of harmonics during NC, and the same inductor, along with an external capacitor, acts as a filter during PC and thus omits the need for a filter. …”
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Study on Photon Transport Problem Based on the Platform of Molecular Optical Simulation Environment by Kuan Peng, Xinbo Gao, Jimin Liang, Xiaochao Qu, Nunu Ren, Xueli Chen, Bin Ma, Jie Tian

“…The results are compared with Tracepro, simplified spherical harmonics method (SPn), and physical measurement to verify the performance of our study method on both accuracy and efficiency.…”
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Analysis the Composition of Hydraulic Radial Force on Centrifugal Pump Impeller: A Data-Centric Approach Based on CFD Datasets by Hehui Zhang, Kang Li, Ting Liu, Yichu Liu, Jianxin Hu, Qingsong Zuo, Liangxing Jiang

“…The force on the impeller can be decomposed into the contributions of each blade, with symmetric blades canceling out the main harmonics, leaving only constant terms and residuals. …”
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Design and Analysis of Low-Speed External Frame Motors with Halbach-Type and Olive-Shaped Magnet Structures by Rana Md Sohel, Youtao Shen, Runze Ji, Kai Liu

“…This study focused on optimizing rotor pole configurations to enhance efficiency and torque stability. An olive-shaped magnet structure provides a more uniform magnetic field distribution in the air gap, substantially reducing magnetic field harmonics and minimizing cogging torque and torque pulsation—critical performance factors for low-speed applications. …”
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Design of Two Phase DC-AC Interleaved Boost Inverter with Voltage Control System using PI Controller by Juan Marco Alexander Wasiatno, Leonardus Heru Pratomo

“…Testing was carried out using several test signals, and it was found that the proposed method worked well. System efficiency and Total Harmonic Distortion (THD) tests carried out using various load values, and a maximum efficiency of 93.87% and a minimum THD of 2.46% were obtained.…”
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Five-Level MLI-Based Grid-Connected Photovoltaic Systems: A Review on Control Methodologies, Modulation Strategies and Recent Developments by Anurag Tiwari, Vinayak Kumar, Ruchi Agarwal, Mohammad Amir, Mohammed A. Alharbi, S. M. Muyeen

“…Five-level MLI-based PV systems have become a crucial option as the relevance of renewable energy keeps increasing because of their increased efficiency, less harmonic distortion, and greater power quality. …”
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Adaptive differential current relay based on form/ripple factors for busbar current signals by R. A. Mahmoud

“…The simulation results manifest the functional efficiency of the suggested technique under diverse operating and fault conditions and its ability to discriminate fault location. …”
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Application of the Non-Hermitian Singular Spectrum Analysis to the Exponential Retrieval Problem by D. J. Nicolsky, G. S. Tipenko

“…In practical signal processing and its many applications, researchers and engineers try to find a number of harmonics and their frequencies in a time signal contaminated by noise. …”
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Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus by Qingqing He, Zhaoyang Tang, Wenzhe Zhao, Keliang Zhou

“…Fully considering the impact of higher harmonics, this paper derives an exact solution for the output current. …”
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Methods, Techniques, and Algorithms of Synchronous Multi-Zone Modulation of Signals of Voltage Source Inverters (literature review) by Oleschuk V., Tirsu M.

“…It provides minimization of even harmonics and undesirable subharmonics (of the fundamental frequency) in spectra of the basic voltages of systems, leading to reducing of losses in systems and to increasing of its efficiency. …”
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Investigating bearing and gear vibrations with a Micro-Electro-Mechanical Systems (MEMS) and machine learning approach by Gagandeep Sharma, Tejbir Kaur, Sanjay Kumar Mangal, Amit Kohli

“…These disruptions result in distinct vibration patterns characterised by increased harmonics and side bands within the bearing frequency range. …”
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ANALYSIS OF THE FUNCTIONING OF A COMBINED ACTIVE FILTER OF A SEQUENTIAL TYPE WITH SELECTIVE LINKS FOR DIRECT CURRENT TRACTION SUBSTATION by Ya. V. Shcherbak, Yu. A. Semenenko

“…The logarithmic amplitude-frequency characteristics of the combined active filter with and without selective link that had been determined clearly demonstrated the higher efficiency of suppression of the non-canonical harmonics in the second case. …”
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Novel UAV-based 3D reconstruction using dense LiDAR point cloud and imagery: A geometry-aware 3D gaussian splatting approach by Kai Qin, Jing Li, Sisi Zlatanova, Haitao Wu, Yin Gao, Yuchen Li, Sizhe Shen, Xiangjun Qu, Zhiyuan Yang, Zhenxin Zhang, Banghui Yang, Shaoyi Wang

“…Secondly, addressing the limitations of current photometric supervision in 3DGS, which struggles with illumination variations due to the constraints of spherical harmonics (SH) color representation and lighting changes, we propose a spatial–temporal SH method. …”
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Backward wave optical parametric oscillator pumped by subnanosecond microlaser pulses by J. Banys, J. Jakutis Neto, A. Žukauskas, V. Pašiškevičius, V. Jarutis, J. Vengelis

“…This paper reports a thorough performance investigation of BWOPO setups pumped by the first (1064 nm) and second (532 nm) harmonics of the microlaser. Based on a periodically poled Rb-doped KTiOPO4 crystal with a 427 nm grating period, BWOPO achieved nearly transform-limited pulses and diffraction-limited beams of the signal and idler waves in the near and mid-infrared with 50% conversion efficiency. …”
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A Hybrid Control Scheme for a Single-Stage LED Driver With Inherent Power Factor Correction and Low Flicker by Christian K. Kruuse, Nicolai J. Dahl, Bima N. Sanusi, Michael A. E. Andersen, Ahmed M. Ammar

“…Experimental results demonstrate a power factor (PF) of 0.97, a total harmonic distortion (THD) of 16.8% and a 100-Hz output current flicker content of 6.75% at 30 W of output power. …”
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Compensation of Dynamic Phase Error in the Formation of Orthogonal Components of Input Signals in Microprocessor Protections by F. A. Romaniuk, Yu. V. Rumiantsev, V. Yu. Rumiantsev, I. V. Novash

“…The resulting orthogonal components with minimal dynamic phase errors are calculated in accordance with samples of calculated orthogonal components and Fourier components. The efficiency of the proposed solution was evaluated by a computational experiment using a digital model implemented in the MATLAB-Simulink dynamic modeling environment. …”
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Research on High-Frequency Modification Method of Industrial-Frequency Smelting Transformer Based on Parallel Connection of Multiple Windings by Huiqin Zhou, Xiaobin Yu, Wei Xu, Weibo Li

“…The results show that the efficiency of this scheme is 12–15% higher than the traditional IF system, the temperature rise in the system is 20 K lower, the voltage at the electrode end is 10–15% higher, the input power of the furnace is increased by 12%, and the harmonic indexes meet the requirements of GB/T 14549, which verifies the value of the scheme for realizing high efficiency, miniaturization, and reliable DC power supply in metallurgy.…”
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