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2024 International Conference on Computer engineering, Network and Intelligent Multimedia, CENIM 2024

作者： Irhamsyah, Muhammad Roslidar Yunidar Al Lail Qadrillah, M. Nasaruddin Arnia, Fitri Munadi, Khairul Universitas Syiah Kuala Post Graduate Program in Engineering Banda Aceh2311 Indonesia Faculty of Engineering Department of Electrical and Computer Engineering 2311 Indonesia

ISBN: (纸本)9798350368802

Tuberculosis (TB) is an infectious disease that can attack the lungs and other organs. In the diagnosis of TB, the interpretation of X-ray radiological images requires special skills from medical specialists. However, the lack of experience of medical personnel and focus on X-ray examinations can be a challenge for radiologists because it has the potential to cause diagnostic errors in image interpretation. Therefore, we proposed a web-based application of real-time chest X-ray interpreter by integrating the deep learning model of Vision Transformer (ViT) to interpret chest X-ray images. The inference model was trained and tested on 652 normal and 652 tuberculosis X-ray images. The data preprocessing of Contrast Adaptive Histogram Equalization (CLAHE) was implemented to increase chest X-ray image contrast as well as inference model performance. The proposed real time system can inteprete the tested chest x-ray images with an accuracy of 95% and with simulation duration time of 4.7 seconds. © 2024 IEEE.

关键词： Diagnosis

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Independent Field Excitation Control of an In-Wheel Wound-Field Flux-Switching Machine for Micro-Hybrid Applications 8

Independent Field Excitation Control of an In-Wheel Wound-Fi...

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8th Southern Power electronics Conference and the 17th Brazilian Power electronics Conference, SPEC / COBEP 2023

作者： Vilela Galo, Diogo Pereira Carvalho Maia, Thales Alexandre De Jesus Cardoso Filho, Braz Ufmg Graduate Program in Electrical Engineering Belo Horizonte Brazil Ufmg Department of Electrical Engineering Belo Horizonte Brazil

ISBN: (纸本)9798350321128

The tightening global emission regulations are com-pelling original equipment manufacturers and researchers to prioritize electrified solutions. In developing countries, fossfl fuel-powered vehicles are expected to continue being the primary choice for light-duty passenger vehicles in the medium term. It is crucial to recognize that micro and mild hybrid electric vehicles can make a significant contribution to reducing emissions and mitigating environmental impact. Electric machine designs with fewer or no rare-earth permanent magnets will play an important role in the widespread adoption of hybrid solutions. In this context, doubly salient reluctance machines exhibit a simple structure, robust mechanical strength, excellent fault tolerance, and a wide speed regulation range, making them well-suited for in-wheel applications. Particular emphasis should be placed on flux-switching ma-chines, which offer great operating flexibility, efficient heat dissipation, and power density of up to 4.8 kW/kg. This paper introduces a wound-field flux-switching machine designed for in-wheel applications, featuring individual field current control. Firstly, the machine is reconfigured to enable independent control of field currents, with a dedicated test bench equipped for precise current control. The primary objective of this research is to enhance the machine's operational versatility by facilitating electronic adjustment of the number of poles, promoting balanced operation' and auamentina field-weakenina capabilities. © 2023 IEEE.

关键词： Hybrid Electric Vehicles In-wheel drives Independent Field-Current Control Wound-Field Flux-Switching Machine

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Interfacial-Layer-Free Ge0.95Si0.05Nanosheet FeFETs

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IEEE Transactions on Electron Devices 2024年第3期71卷 1758-1763页

作者： Hsieh, Wan-Hsuan Chen, Yu-Rui Liu, Yi-Chun Zhao, Zefu Lee, Jia-Yang Tu, Chien-Te Huang, Bo-Wei Wang, Jer-Fu Lee, M.H. Liu, C.W. Graduate Institute of Electronics Engineering National Taiwan University Taipei10617 Taiwan Institute and Undergraduate Program of Electro-Optical Engineering Graduate School of Advance Technology National Taiwan University Taipei10617 Taiwan National Taiwan University Graduate School of Advance Technology Taipei10617 Taiwan Graduate Institute of Electronics Engineering Graduate Institute of Photonics and Optoelectronics Graduate School of Advanced Technology National Taiwan University Department of Electrical Engineering Taipei10617 Taiwan

The substantial memory window (MW) of 1.8 V is achieved by utilizing stacked two nanosheet (NS) gate-all-around (GAA) Ge0.95 Si0.05 ferroelectric field-effect transistors (FeFETs), employing a low write voltage of 2 V. The channel phosphorus concentration 1E18 cm-3 is used to erase the absence of interfacial layer (IL) can reduce the operation voltage. An isotropic wet etching process is employed for channel release. The stacked two NSs offer the advantages of reducing cell-to-cell variation and doubling the read current. Additionally, the stability of data storage is demonstrated with the data retention of >1E4 s, linearly extrapolated to a span of 10 years, and exhibiting high endurance >1E11 cycles. The thermal budget is as low as 400 °C. © 1963-2012 IEEE.

关键词： III-V semiconductors

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Deep Convolutional Neural Networks for Accurate Solar Module Classification in Thermal Images 12

Deep Convolutional Neural Networks for Accurate Solar Module...

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12th International electrical engineering Congress, iEECON 2024

作者： Phungket, Chutinun Nangthin, Prasit Pathumwan Institute Of Technology The Graduate Program Faculty Of Engineering Faculty Of Engineering Bangkok Thailand Pathumwan Institute Of Technology Faculty Of Engineering Department Of Electrical Engineering Bangkok Thailand

ISBN: (纸本)9798350383591

The rapid and continuous technological advancements in computer and internet technologies, combined with data management techniques, find applications in various domains. For example, they aid in predictive maintenance systems, evaluate the performance of solar modules, and differentiate efficiently performing solar modules from less efficient ones using thermal imagery. The accuracy of solar module classification significantly impacts the subsequent assessment. In this study, we employ advanced techniques, particularly deep learning through Convolutional Neural Networks (CNN), to classify thermal images of solar modules. The practical aspects of applying CNN to the dataset of thermal images are explored, including transfer learning from pretrained CNN architectures and custom CNN architecture training. Experiments are conducted with three prominent types of solar module conditions: normal, cracked, and dusty. The results reveal that the most effective approach involves learning and fine-tuning pre-trained architectures on detailed studies, achieving a classification accuracy of up to 94.5% © 2024 IEEE.

关键词： Convolutional neural networks

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A Novel Low Temperature Cofired-Cordierite Ceramic Substrate Based Compact Ultra-Wideband Circularly Polarized Array Antenna for C-Band Remote Sensing Application

IEEE Open Journal of Antennas and Propagation

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IEEE Open Journal of Antennas and Propagation 2025年第3期6卷 715-725页

作者： Pramono, Subuh Sumantyo, Josaphat Tetuko Sri Ibrahim, Muhammad Hamka Takahashi, Ayaka Yoshimoto, Yuki Kashihara, Hisato Santosa, Cahya Edi Gao, Steven Ito, Koichi Universitas Sebelas Maret Department of Electrical Engineering Faculty Engineering Indonesia Chiba University Center for Environmental Remote Sensing Japan Chiba University Department of Environmental Remote Sensing Graduate School of Science and Engineering Japan Teikyo University Japan National Research and Innovation Agency Indonesia Chinese University of Hong Kong Department of Electronic Engineering Hong Kong

This research proposes a novel antenna substrate that is realized based on low-temperature co-fired ceramic (LTCC) technology using cordierite ceramic (2MgO 2Al2O3 5SiO2). Compared to other existing ceramics, it has an impressive low dielectric constant (ϵ r) of 4.674 and a loss tangent (tan δ) of 0.0723 at 5.3 GHz, which makes it ideal for creating an ultra-wide-band (UWB) circularly polarized (CP) array antenna. In addition, cordierite ceramic is suitable for high-temperature environments, its coefficient of linear thermal expansion is about 1.8 × 10-6/K (40° C- 800° C), and it expands only 0.1% of its room temperature dimensions even in a 1000 ° C environment. Through a sputtering process, platinum with a melting point of 1768 oC and very good oxidation resistance is used as a conductive material on the cordierite ceramic substrate. Based on the measured results, the proposed 2 × 2 CP array antennas have an ultrawide impedance bandwidth (IBW) of 1.74 GHz (32.83 %), an axial ratio bandwidth (ARBW) of 1.26 GHz (23.77 %), and a maximum gain of 12.2 dBic. In the experimental test, the proposed 2 × 2 CP antennas are set up as transmitters and receivers in a CP synthetic aperture radar (SAR) system with full polarimetric modes (L-L, L-R, R-L, and R-R) for remote sensing applications. The transceiver 2 × 2 CP array antennas have high isolation with an average mutual coupling level of around -65.9 dB. The back projection algorithm is applied to convert the received data into the scattering images and samples the maximum scattering intensities from the scattering images that are presented in scattering matrices. The measured scattering matrices have a similar trend to the theoretical scattering matrices. Based on the heat-exposed measurement, exposure to 500° C of heat on the 2 × 2 CP array antennas causes physical change. The antennas expand in size, which leads to a slight shift in the center frequency by 140 MHz. This proves that the proposed 2 × 2 CP array antennas pe

关键词： Low-k dielectric

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Development of LED Lighting for Microalgae Propagation with Emission Spectrum Having Broader Emission Peaks

Development of LED Lighting for Microalgae Propagation with ...

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2024 IEEE Sustainable Smart Lighting World Conference and Expo, LS24 2024

作者： Hosoda, Nobuaki Murata, Takashi Misu, Takayuki Kanagawa Institute of Technology Graduate School of Engineering Master's Degree Program in Electrical and Electronic Engineering Atsugi Kanagawa243-0292 Japan Kanagawa Institute of Technology Faculty of Engineering Department of Applied Chemistry and Bioscience Atsugi Kanagawa243-0292 Japan Kanagawa Institute of Technology Faculty of Engineering Department of Electrical and Electronic Engineering Atsugi Kanagawa243-0292 Japan

ISBN: (纸本)9798331540197

In this study, we aimed to develop LED lighting with an emission spectrum effective for microalgae propagation, and fabricated LED lighting with Phosphor layer RGB, which has peaks in the red, green, and blue wavelength bands, and Phosphor layer RG'B', which has broader peaks in the red, green, and blue wavelength bands. In order to examine the effect of microalgae propagation, Closterium ehrenbergii samples prepared at different dilution rates were irradiated with LED illumination light of Phosphor layer RG'B' and Phosphor layer RGB, respectively, for 7 days, and their propagation rates were compared. The results of the experiment showed that Phosphor layer RG'B' produced a higher propagation rate than Phosphor layer RGB. © 2024 IEEE.

关键词： Light emitting diodes

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Record 22-dB Net Gain of Broadband Single-Mode Cr-Doped Crystalline Core Fiber by AI-Assisted Image Recognition Growth

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Journal of Lightwave Technology 2024年第8期42卷 2971-2977页

作者： Liu, Chun-Nien Chang, Kai-Chieh Tsai, Chia-Ling Huang, Chien-Wei Shih, Tien-Tsorng Huang, Sheng-Lung Cheng, Wood-Hi National Chung Hsing University Department of Electrical Engineering Taichung402 Taiwan National Taiwan University Graduate Institute of Photonics and Optoelectronics Taipei102 Taiwan National Chung Hsing University Graduate Institute of Optoelectronic Engineering Taichung402 Taiwan National Kaohsiung University of Applied Sciences Department of Electronic Engineering Kaohsiung800 Taiwan

A record net gain of 22-dB and improved twice gain-per-unit length (GPUL) of 110 dB/m in a 13-μm core, 20-cm length, and 300-nm broadband single-mode Cr-doped crystalline core fibers (CCFs) are demonstrated by AI-assisted image recognition growth. The gain is significantly higher compared to the previous core of 25-μm. Both high gain and GPUL are achieved thanks to a novel AI-assisted, image recognition applied to the precise control of the molten zone with luminance of 2.39 cd/m2 for fabricating smaller core diameter of 13-μm. The AI-assisted growth is performed by capturing images of the molten zone, RGB image recognition, luminance calculation, and real-time luminance adjustment within required value. The gain of several core diameters and fiber lengths has been thereafter simulated, which agrees with measured result. The smaller core of 13-μm exhibits higher coupling efficiency that is 65% the previous core of 25-μm. A lower noise figure of 4.2-dB is also obtained. In this study, the proposed CDFs looks promising for broadband fiber amplifiers. © 1983-2012 IEEE.

关键词： Luminance

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Comparison of 2L and 3L-NPC Power Converter-Based a Level-2 Isolated Off-Board Charger

Comparison of 2L and 3L-NPC Power Converter-Based a Level-2 ...

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2023 IEEE International Conference on electrical, Computer and Energy Technologies, ICECET 2023

作者： Thanakam, Thidarat Kumsuwan, Yuttana Graduate Program in Electrical Engineering Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai Thailand Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai Thailand

ISBN: (纸本)9798350327816

This paper presents an off-board charger system for any electric vehicle based on a single-stage power converter operation that performs as a three-phase pulse width modulation rectifier. To enhance the safety issue by itself, a step-down transformer with galvanic isolation is added. Additionally, the off-board charger system allows bidirectional power flow in both grid-to-vehicle (G2V) and vehicle-to-grid operations. To analyze this system, only G2V operation is shown by comparing a two-level power converter charger with a three-level neutral point clamped power converter charger. In light of its controller, the off-board charger is designed to charge a battery in constant current and constant voltage mode in compliance with Level 2 of charging power. Based on this controller, it can support grid power quality under a unity power factor. Simulation-based verification is conducted on a maximum power rating of 22 kW to claim the performance of steady-state operation and dynamic operation. © 2023 IEEE.

关键词： Electric vehicles galvanic isolation off-board charger three-level neutral point clamped power converter two-level power converter

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Control of Three-Level PWM Inverter-Fed Induction Motor Drives

Control of Three-Level PWM Inverter-Fed Induction Motor Driv...

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2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2023

作者： Mueangngoen, Sutthimat Jarutus, Neerakorn Kumsuwan, Yuttana Chiang Mai University Graduate Program in Electrical Engineering Department of Electrical Engineering Faculty of Engineering Chiang Mai Thailand Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai Thailand

ISBN: (纸本)9798350314274

This paper presents the control of three-level PWM committed to a three-level twelve-switch inverter-fed induction motor drive. The proposed control is totally capable of extracting the maximum DC utilization with the classical continuous and discontinuous PWM. Moreover, in the light of the multi-level inherency, the low switching frequency is attractive to this application to avoid the high power losses, while it can maintain the stability of the operation. Regardless of the single or double carrier waves, optimized switching states associated with the proposed logical operation part, which is responsible for obtaining the multi-level characteristic of the inverter, are also proposed. Importantly, through the MATLAB/Simulink program, the steady-state and dynamic response of the high-performance drive with the classically indirect vector control are definitely investigated to confirm the effectiveness of the proposed control strategy. © 2023 IEEE.

关键词： Pulse width modulation

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On-Board Integrated Charger Based on Open-End Winding AC Machine

On-Board Integrated Charger Based on Open-End Winding AC Mac...

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2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2023

作者： Thanakam, Thidarat Jarutus, Neerakorn Kumsuwan, Yuttana Chiang Mai University Graduate Program in Electrical Engineering Department of Electrical Engineering Faculty of Engineering Chiang Mai Thailand Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai Thailand

ISBN: (纸本)9798350314274

This paper presents an on-board integrated charger for electric vehicles (EVs) based on an open-end winding AC machine. To reduce weight, volume, and costs, including additional space area in EVs, the main component of the traction system is utilized as a part of the charger system, i.e., the wound rotor open-end winding AC machine fed by a dual converter with a single battery source. In charging operation, the rotor winding side of the AC machine is at standstill and reconfigured through magnetic contactors to interface with the three-phase utility grid, whereas the stator winding side is still connected to the converters. It performs as a transformer isolated by itself. On the other hand, the rotor windings are shorted together for the driving operation. Besides, the charger system assists the stability of the utility grid by consuming constant power, absorbing maximum power rated at 22 kW. To enhance excellent control, the modulation strategy of the dual converter is determined by means of different phase angles of 120° As a result, the differential-mode voltage problem is suppressed. The simulation results are validated to confirm the performance of the proposed system. © 2023 IEEE.

关键词： Winding

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