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1st IEEE International Conference on Smart and Sustainable developments in Electrical engineering, SSDEE 2025

作者： Satyanarayana, Karri v.v. Amrolia, H.Z. Nirma University Institute of Technology Department of Electrical Engineering Gujarat Ahmedabad382481 India

ISBN: (纸本)9798331542108

The penetration of conventional energy sources is decreasing while energy demand is increasing. Therefore, alternative energy sources are required to ensure an emission-free environment and to meet energy demands, such as photovoltaic (Pv) systems. The generating voltage of a Pv source is low, so high-voltage gain converters have been developed to meet the required load demands. This article presents a grid-connected Pv system using a high-gain converter. The high-gain converter in the proposed system offers several advantages, such as fewer components, design with a single switch, minimal gate driver circuitry, low cost, and high efficiency. The Pv source voltage acts as the input to this high-gain converter. The bidirectional DC/AC converter is controlled by hysteresis current control. The active component current for hysteresis current control is generated using the loss component current, load power, and Pv power. The aforementioned control strategy maintains power management between the electrical sources and the load. The suggested system is simulated for a 1.2 kW power rating, and the obtained simulation results are presented. © 2025 IEEE.

关键词： Power management (telecommunication)

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design and Assessment of DC-DC Interleaved Flyback Stage for Module-Integrated Pv Microinverters 1

Design and Assessment of DC-DC Interleaved Flyback Stage for...

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1st IEEE International Conference on Smart and Sustainable developments in Electrical engineering, SSDEE 2025

作者： Laxmi, Nakkella Kumar, v. vignesh Sv, Salai Thavakkodi National Institute of Technology Department of Electrical and Electronics Engineering Trichy India

ISBN: (纸本)9798331542108

Microinverters are typically integrated with individual solar photovoltaic (Pv) modules to enhance system performance. This paper presents the design and evaluation of an interleaved flyback DC-DC converter for microinverters in a methodical approach. The flyback converter is selected for its advantages, including a reduced component count and a simplified architecture. Additionally, it provides electrical isolation, meeting grid code requirements, and offers high voltage gain, making it suitable for a wide range of input voltages. The time-interleaved operation of the DC-DC flyback stage, utilizing multiple parallel switching phases, effectively reduces ripple current, minimizes component stress, and improves power density. An active clamp circuit is incorporated to recover leakage energy. The operational principles, including all modes of operation, are thoroughly explained. The complete design is presented with relevant mathematical formulations and validated through software simulations. © 2025 IEEE.

关键词： Software design

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design strategies for electrochromic displays

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Journal of the Korean Ceramic Society 2025年 1-36页

作者： Shin, Dongbin Lee, Jeongseo Pyo, Hoon Lee, Sihyun Kang, Hyunmook Kim, Hyojung Moon, Cheon Woo Department of Display Materials Engineering Soonchunhyang University Asan31538 Korea Republic of Department of Semiconductor Systems Engineering Sejong University Seoul05006 Korea Republic of

Non-emissive displays that harness ambient light are one of the cornerstones in the area of visually representing the desired object. Among the materials used, therein, electrochromic (EC) materials have shown their great potential, due to their low power consumption, wide-viewing angle, and excellent bistability. These features lead to ease of daily applications like IoT, where traditional famous displays such as LCD and LED cannot easily be adopted. Moreover, EC material-based pixels can dynamically represent RGB colors and contrast within a single pixel, which significantly differentiates them from traditional emissive devices. Displays based on EC materials demand complicated requirements, for example, the design of optically efficient nanostructures, the development of energetically efficient electrochemical systems, and the design of optimized device architectures. However, as these individual aspects and inter-effects are not yet fully understood, a comprehensive understanding of the electrical, chemical, and optical interactions is crucial for advancing device design. In this review paper, an overview of the current developments in non-emissive display technology based on EC materials is provided, and the principles necessary for designing efficient EC display devices are outlined for efficient EC device design. © The Korean Ceramic Society 2025.

关键词： Pixels

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vLC positioning in low data rate for v2v communication 2024

VLC positioning in low data rate for V2V communication

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12th Euro-American Conference on Telematics and Information Systems, EATIS 2024

作者： Giraldo, Luis Miguel Soler, Joaquin Perez Botella-Mascarell, Carmen Juan, vicent Girbes varea, Sandra Roger Torres, Julio Martos Olcina, Raimundo Garcia Electronical Engineering Department Universitat de València Burjassot Valencia46100 Spain Computer Science Department Informatics Department Universitat de València Burjassot Valencia46100 Spain

ISBN: (纸本)9798400717338

The creation and implementation of a system that bridges visible light communication (vLC) with selected identifiers, envisioned as informational beacons, are outlined. This system is adept at controlling LED panels and orchestrating communication between LED lights and the receiving unit, laying the groundwork for vehicle-to-vehicle (v2v) communication systems tailored for precise positioning. The design and assessment of test-bed requirements cater to the anticipation of future v2v optical wireless communication scenarios. Through analysis, it is demonstrated that commercial outdoor lighting can be effectively utilized for v2v positioning, capable of operating under daylight with a data transmission rate of 100 Kbps. Crucially, the system's ability to accurately detect positioning beacons facilitates the localization of vehicles within designated areas of interest, paving the way for the advancement of v2v communication technologies. This comprehensive approach not only validates the feasibility of using vLC for vehicle positioning but also sets a precedent for future developments in v2v communication systems. © 2024 Owner/Author.

关键词： optical communication

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design optimization of a 1-D array of stemless plastic scintillation detectors

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MEDICAL PHYSICS 2025年第4期52卷 2560-2569页

作者： Aynehband, Samaneh Hill, Ian G. Syme, Alasdair Dalhousie Univ Dept Phys & Atmospher Sci 5820 Univ AveDickson BldgRm 3030 Halifax NS B3H 1V7 Canada Dalhousie Univ Dept Radiat Oncol Halifax NS Canada Nova Scotia Hlth Author QEII Hlth Sci Ctr Dept Med Phys Halifax NS Canada

BackgroundA stemless plastic scintillation detector (SPSD) is composed of an organic plastic scintillator coupled to an organic photodiode. Previous research has shown that SPSDs are ideally suited to challenging dosimetry measurements such as output factors and profiles in small fields. Lacking from the current literature is a systematic effort to optimize the performance of the photodiode component of the detector. An optimized detector could permit a reduction in detector element size, thus improving spatial resolution without degradation of the signal to noise ratio values seen *** use an organic photodiode coupled to a plastic scintillator to measure ionizing radiation fields. The design retains the benefits of plastic scintillation detectors (energy and dose rate independence, no perturbation factors, etc.) but avoids the challenges of optical fiber-based systems (Cerenkov radiation). In this work, the design of a 1-dimensional array of SPSDs is optimized to maximize the measured ***-covered PET was etched using hydrochloric acid, and the substrate was cleaned. PEDOT: PSS and P3HT: PCBM (different weight ratios) were then applied to the substrate using spin-coating. Finally, aluminum top electrodes were added using vacuum thermal evaporation to complete the fabrication process. The variables studied for the optimization included: spin coater's speed (i.e., film thickness), P3HT: PCBM ratio, solution concentration, and scintillator *** the film thickness from similar to 80 nm to similar to 138 nm increased the measured signal by a factor of approximately 7.7. Changing the ratio of P3HT to PCBM from (1:1) to (4:1) resulted in approximately 3.5 times higher signal. Additionally, increasing the total concentration of the solution from 2% to 4% by weight ratio increased the signal by roughly a factor of 2.5 for a P3HT: PCBM ratio of 2:1. However, for a P3HT: PCBM ratio of 4:1, increased solution concentration

关键词： organic detector radiation scintillator small-field dosimetry stemless plastic scintillation detector

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design and simulation of AlGaAs Curved Mirror vertical Cavity Surface Emitting Laser 29

Design and simulation of AlGaAs Curved Mirror Vertical Cavit...

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vertical-Cavity Surface-Emitting Lasers XXIX 2025

作者： Nashed, A.I. Lestrade, Michel Li, Z.Q. Li, Z.M. Simon Crosslight Software Inc. 230-3410 Lougheed Hwy VancouverBCV5M 2A4 Canada

ISBN: (数字)9781510685178

ISBN: (纸本)9781510685161

This paper presents the design and simulation of an AlGaAs-based vertical Cavity Surface Emitting Laser (vCSEL) with a curved bottom Distributed Bragg Reflector (DBR), operating at 830 nm. The curved mirror enhances mode confinement, reducing threshold current to 0.8 mA and improving output power to 5mW at 5mA bias, outperforming flat mirror designs. Dynamic simulations under 1 GHz modulation confirm excellent high-speed performance. These results demonstrate the potential of curved mirror vCSELs for compact, efficient, and high-frequency optical applications. © 2025 SPIE.

关键词： Surface emitting lasers

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Fault Detection of Distributed Power Distribution Network Based on Grey Wolf pack Algorithm

Fault Detection of Distributed Power Distribution Network Ba...

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2024 International Conference Optoelectronic Information and optical engineering, OIOE 2024

作者： Li, Yuqing Luo, Jinman Wang, Haiji Dongguan Power Supply Bureau Guangdong Power Grid Corporation Guangdong Dongguan China China Energy Construction Group Guangdong Electric Power Design and Research Institute Co. Ltd. Guangdong Guangzhou China

ISBN: (数字)9781510688209

ISBN: (纸本)9781510688193

The integration of distributed power supply into the distribution network is an important trend in the development of the current new power system. In view of the problem that the system can not quickly and accurately obtain the fault type and locate the location of the fault when the current distributed power distribution network fails. Introduce a detection method to optimize the current fault analysis system of distribution network based on the grey Wolf pack algorithm (Grey Wolf Optimization, GWO), and optimize the fault detection algorithm based on the optimization of distribution network structure. In addition, a complete analytical model of complete fault information such as medium calculation, misoperation and action is constructed to improve the analytical model of detecting complex fault situations in the distribution network. Through example analysis, the effectiveness of the fault detection model of distributed power distribution network based on gray Wolf swarm algorithm is verified, reducing the probability of fault miscalculation of distribution network to a certain extent, and solving the problem of low accuracy and slow speed of distribution network fault detection in the traditional algorithm. © 2025 SPIE.

关键词： Power distribution faults

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Dual-Polarization optical Costas Loop for DSP-Free Homodyne Short-Reach Links

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Journal of Lightwave Technology 2025年第9期43卷 4016-4025页

作者： Liu, Junqian Wissing, Aaron Movaghar, Ghazal Andrade, Hector Misak, Stephen Maharry, Aaron Dalton, James valenzuela, Luis Du, Xinhong Chansky, Evan Gilardi, Giovanni Su, Guan-Lin Kumar, Ranjeet Coldren, Larry Saleh, Adel Buckwalter, James Schow, Clint University of California Electrical and Computer Engineering Department Santa BarbaraCA93106 United States Infinera San JoseCA95119 United States Lucidean Incorporated Santa BarbaraCA93107 United States MaxLinear CarlsbadCA92008 United States Intel Corporation HillsboroOR97124 United States Intel Corporation Santa ClaraCA95054 United States

Here we report a dual-polarization, O-band optical phase-locked loop packaged in a footprint compatible with pluggable optics. Custom-designed analog Costas loop electronics and silicon photonic circuits, including a hybrid-integrated tunable laser serving as the local oscillator, were integrated into a functional receiver subsystem that was characterized as part of a full coherent link. The receiver frequency and phase locked loop had a bandwidth of 450 MHz and was capable of locking to frequency offsets -3 were achieved with 4.8 pJ/bit of transmitter and 8.8 pJ/bit of receiver power consumption, demonstrating the potential for a DSP-free solution for coherent links below 10km as an alternative to current IMDD schemes. © 1983-2012 IEEE.

关键词： Silicon photonics

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Optoelectronic co-optimization of high-performance dual-port Ge/Si lateral photodetector with side confinement trenches 2

Optoelectronic co-optimization of high-performance dual-port...

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2nd International Academic Conference on Optics and Photonics, IACOP 2024

作者： Cheng, Jialin Yan, Huimin Zhang, Shuojian Liu, Biaohan He, Jian-Jun State Key Laboratory of Extreme Photonics and Instrumentation Centre for Integrated Optoelectronics College of Optical Science and Engineering Zhejiang University Hangzhou310027 China

ISBN: (数字)9781510688827

ISBN: (纸本)9781510688810

Photodetectors, which convert optical signals into electrical signals, are critical components in integrated silicon photonic platforms. This paper introduces a high-performance Ge/Si lateral photodetector design with dual-port incidence and confinement trenches on both sides. Compared to one-port incidence, the dual-port design significantly improves the light field and the distribution of photogenerated carriers in the Ge region. The confinement trenches in the Si layer on both sides of the Ge focus light more effectively into the Ge region, enhancing absorption efficiency and boosting responsivity. Following optoelectronic co-optimization, the 64-PD array, fabricated through MPW service, demonstrates high performance: dark current below 3 nA, O-band responsivity above 0.92 A/W, and small-signal bandwidth over 34 GHz at 3 v bias. The large-signal eye diagram test achieves a rate above 36 Gbps, limited by the 40 Gbps test system. The PD array exhibits consistent performance, making it highly suitable for applications in optical interconnects and optical computing. © 2025 SPIE.

关键词： Silicon photonics

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Wideband Dual-Polarized Metasurface Antenna with Polarization Reconfigurable Controlled by Diode and Resistor, Featuring Low RCS

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IEEE Antennas and Wireless Propagation Letters 2025年第5期24卷 1208-1212页

作者： Ding, Zhendong Li, Jiawang Cao, Jianyin Wang, Hao Chia, Michael Yan-Wah Nasimuddin, Nasimuddin Nanjing University of Science and Technology School of Electronic and Optical Engineering Nanjing210094 China Södergatan Eslöv24130 Sweden Institute for Infocomm Research A∗STAR Singapore138632 Singapore

A polarization reconfigurable metasurface wideband antenna with dual polarized and a low radar cross section (RCS) is presented. The antenna employs a diode positioned between two transmission lines to control the current direction and a resistor on a defected-ground branch to manage phase shifts, enabling seamless transitions between circular polarization (CP) and linear polarization (LP). The elliptical metasurface design contributes to a reduced RCS. The design results are verified through measurement, showing an impedance bandwidth (IBW) of 49.1%, an axial ratio bandwidth (ARBW) of 23.2% for the diode is OFF, an IBW of 36.4% for the diode is ON, the IBW of the connected resistor is 40.7%, and the peak gains for the three states are 6.4 dBi, 4.4 dBi, and 4.2 dBi, respectively. The metasurface achieves a low RCS bandwidth ranging from 2 GHz to 24 GHz, showing a 6 dBsm reduction in RCS from 4.9 GHz to 19.7 GHz, which corresponds to a 120.3% decrease compared to a PEC plate. © 2002-2011 IEEE.

关键词： Radar cross section

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