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A Design of High Efficiency Non-Time Division Multiplexing Battery-less and Self-Powered Multi-Input Single-Inductor Single-Output Using 22nm FDSOI Technology 22

A Design of High Efficiency Non-Time Division Multiplexing B...

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22nd International Symposium on Communications and Information Technologies, ISCIT 2023

作者： Manabat, Francis Roi Dayondon, Jom Harvy P. Fernandez, Johnter Clint R. Adrivan, Kriz Kevin Hora, Jefferson A. Mindanao State University Iligan Institute of Technology Microelectronics Laboratory Department of Electrical Engineering and Technology Iligan City9200 Philippines

ISBN: (纸本)9781665457316

This study focuses on the development and analysis of a non-time division multiplexing technique of the multi-input single-inductor single-output energy harvesting unit using 22nm FDSOI technology. The EHU is designed to harness energy from three transducers, namely: PV, PZT, and TEG. Moreover, the proposed system operates without the need for external power sources or batteries. The proposed EHU achieves a peak extraction efficiency of 87% and a maximum power-point tracking efficiency of 99% and delivering an overall system power output of 3. 6mW. It can rapidly reach a peak output voltage of 2V within approximately 27 sec. of charging from 0 V. The findings demonstrate the efficacy of the EHU in efficiently harvesting energy from multiple sources, enabling remote and sustainable applications for wearables, wireless sensor nodes and for the internet-of-things (IoT) devices. © 2023 IEEE.

关键词： Maximum power point trackers

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Low-Quiescent and Reduced-Power Zero-Current Detector for a DC-DC Switched-Mode Converter Implemented in 22nm FDSOI 38

Low-Quiescent and Reduced-Power Zero-Current Detector for a ...

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38th IEEE Region 10 Conference, TENCON 2023

作者： Grana, Lawrence P. Hora, Jefferson A. Mindanao State University Iligan Institute of Technology Microelectronics Laboratory Department of Electrical Engineering and Technology Iligan City9200 Philippines

ISBN: (纸本)9798350302196

This paper introduces a low-quiescent and reduced-power zero current detector (ZCD) designed specifically for a DC-DC switched-mode converter operating in discontinuous current mode. The ZCD incorporates control switches strategically placed to minimize power consumption and leakage current. The ZCD operation is enabled through a ZCD controller circuit, which efficiently manages the power consumption. The controller circuit generates a voltage to control the ZCD, ensuring that the control switches are triggered only when the inductor current is about to change polarity, typically occurring when the low-side power switch of the converter is active. Once the zero current is detected, the ZCD becomes inactive after a slight delay of 1ns, as defined in this paper. The ZCD controller circuit comprises flip-flops and logic gates, managing the ZCD's activation and deactivation. Control switches are strategically placed at each branch of the ZCD circuit to optimize its efficiency. To monitor the inductor current of the DC-DC converter, the voltage polarity at one end (input side) of the inductor is sensed in relation to the ground. The ZCD is configured with transistors in reverse back gate biasing, further enhancing its performance and efficiency. The simulation results showcase impressive outcomes, with the ZCD exhibiting a quiescent current of 1.13nA and an average current of 323nA at a 0.8V supply voltage. This design is implemented using the advanced 22nm FDSOI technology, showcasing its practicality and relevance in modern circuit design. © 2023 IEEE.

关键词： Electric power utilization

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Modal Localization in Disordered Hyperbolic Lattices

Modal Localization in Disordered Hyperbolic Lattices

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2023 Novel Optical Materials and Applications, NOMA 2023

作者： Park, Hyungchul Park, Seungkyun Kim, Gyunghun Park, Namkyoo Yu, Sunkyu Intelligent Wave Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Photonic Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of

We investigate modal localization of light in disordered hyperbolic lattices. We examine modal area at the bulk of a disordered hyperbolic lattice, which demonstrates that high degree in the lattice leads to the deloc...

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Perturbative Design for Quasi-isospectrality in Multidimensional Photonic Systems

Perturbative Design for Quasi-isospectrality in Multidimensi...

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2023 Novel Optical Materials and Applications, NOMA 2023

作者： Lee, Dayeong Park, Hyungchul Park, Seungkyun Park, Namkyoo Yu, Sunkyu Intelligent Wave Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Photonic Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of

We propose a perturbative design method for engineering quasi-isospectrality in multidimensional photonic systems. Our study provides platform-transparency alleviating mathematical strictness of supersymmetric transfo... 详细信息

关键词： Photonic devices

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Physically Aware Synthesis Revisited: Guiding Technology Mapping with Primitive Logic Gate Placement 24

Physically Aware Synthesis Revisited: Guiding Technology Map...

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43rd International Conference on computer-Aided Design, ICCAD 2024

作者： Pan, Hongyang Lan, Cunqing Liu, Yiting Wang, Zhiang Shang, Li Zeng, Xuan Yang, Fan Zhu, Keren State Key Lab of Integrated Circuits and Systems School of Microelectronics Fudan University China School of Computer Science Fudan University China Department of Electrical and Computer Engineering University of California San Diego United States

ISBN: (纸本)9798400710773

A typical VLSI design flow is divided into separated front-end logic synthesis and back-end physical design (PD) stages, which often require costly iterations between these stages to achieve design closure. Existing approaches face significant challenges, notably in utilizing feedback from physical metrics to better adapt and refine synthesis operations, and in establishing a unified and comprehensive metric. This paper introduces a new Primitive logic gate placement guided technology MAPping (PigMAP) framework to address these challenges. With approximating technology-independent spatial information, we develop a novel wirelength (WL) driven mapping algorithm to produce PD-friendly netlists. PigMAP is equipped with two schemes: a performance mode that focuses on optimizing the critical path WL to achieve high performance, and a power mode that aims to minimize the total WL, resulting in balanced power and performance outcomes. We evaluate our framework using the EPFL benchmark suites with ASAP7 technology, using the OpenROAD tool for place-and-route. Compared with OpenROAD flow scripts, performance mode reduces delay by 14% while increasing power consumption by only 6%. Meanwhile, power mode achieves a 3% improvement in delay and a 9% reduction in power consumption. © 2024 Copyright is held by the owner/author(s).

关键词： Logic design

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Design and Qualification of a High-Speed Low-Power Comparator in 40 nm CMOS Technology 32

Design and Qualification of a High-Speed Low-Power Comparato...

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32nd International Scientific Conference Electronics, ET 2023

作者： Zaki, Alireza Mohammad Du, Yutong Nihtianov, Stoyan Delft University of Technology Faculty of Electrical Engineering Mathematics and Computer Science Department of Microelectronics Mekelweg 5 DelftCD 2628 Netherlands

ISBN: (纸本)9798350302004

This paper presents the design methodology, test setup and experimental qualification results of a high-speed low-power threshold comparator in 40 nm CMOS technology intended for the registry of particles landing on a PIN-detector surface in particle detector readout electronics. The operation of the designed comparator is experimentally qualified for ideal digital pulses and analog signals generated by the preceding stages in a targeted potential application. © 2023 IEEE.

关键词： Comparators (optical)

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Coordinated EMS for Stability Enhancement of NMGs During Disturbance and Fault Conditions 50

Coordinated EMS for Stability Enhancement of NMGs During Dis...

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50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Hussein, Hossam M. Abdelrahman, Mahmoud S. Kharchouf, Ibtissam Rafin, S.M. Sajjad Hossain Mohammed, Osama A. Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University MiamiFL33174 United States

ISBN: (纸本)9781665464543

Power systems are evolving from centralized power grid structures to networks of intelligent microgrids (MGs) that can share power more independently. The interconnection between these MGs, forming the networked MGs (NMGs), will increase the power system’s stability and expand its capabilities. However, a critical concern that necessitates sophisticated management strategies for voltage stabilization across the microgrids is the optimal and effective power sharing between renewable resources and energy storage devices. Effective power sharing between AC and DC sides is critical, necessitating robust control mechanisms for interlink converters (ILC). This paper presents a coordinated energy management strategy for hybrid networked MGs (NMGs) to enhance stability during contingencies and fault instances. The proposed Energy Management System (EMS) operates in two distinct modes: grid-connected and islanded. The system takes specific actions to maintain stability depending on the current mode. In grid-connected mode, the grid supplies the load demand while one of the microgrids (MGs) serves as a backup to ensure system stability. Several scenarios were created using MATLAB/Simulink to test and validate the EMS. These scenarios included varying load demands, pulsed power loads, uncertainties in photovoltaic (PV) system generation, disconnection from the AC side, and fault conditions. The proposed EMS has proven its efficiency while maintaining the system stability within the standard limits and fulfilling the load demands. © 2024 IEEE.

关键词： Microgrids

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Optimizing Different Methods of Fabricating 3D Printed UV Blocking Sheets for Solar Cells 1

Optimizing Different Methods of Fabricating 3D Printed UV Bl...

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1st Renewable Energy Technologies and Modern Communications Systems: Future and Challenges Conference, RETMCS 2024

作者： Alhindi, Amjad Fawzi Elatab, Nazek Baawad, Lujain Khalid Bahabry, Rabab R. Allam, Fahad Laboratory Electrical and Computer Engineering Computer Electrical Mathematical Science and Engineering Thuwal Saudi Arabia College of Science Department of Physical Sciences Jeddah21589 Saudi Arabia Materials Science and Engineering Department King Fahd University of Petroleum and Minerals Dhahran31261 Saudi Arabia

ISBN: (纸本)9798331519445

This study investigates the fabrication of innovative UV-blocking sheets that effectively transmit visible light while simultaneously obstructing harmful ultraviolet (UV) radiation, utilizing Cerium Oxide (CeO2) and Zinc Oxide (ZnO) nanoparticles as UV-blocking agents. Three distinct fabrication methods were explored: The Powder Method, where nanoparticles were incorporated directly into polydimethylsiloxane (PDMS);the Ball milling Mixture method, which involved mixing nanoparticles through ball milling;and the Solvent-Based Mixture method, where nanoparticles were dissolved, mixed, and dried;before incorporation into PDMS. Samples were produced using a 3D printing technique, which is Direct Ink Writing (DIW) and characterized for their optical properties via UV-Vis spectroscopy. The results indicated CeO2 demonstrated superior UV-blocking capabilities (a maximum blockage of ~99%) compared to ZnO, while maintaining high transmittance for visible light (a maximum of ~90%). Notably, the solvent-based method exhibited better results than the ball milling method;however, the powder method had the best results. Therefore, this investigation offers a promising solution for solar panel protection that aligns with Saudi Arabia's Vision 2030 energy objectives. The relentless exposure of devices, particularly solar cells, to harmful UV radiation poses a formidable challenge and leads to annual degradation rates of between −0.8% and −4.9%, besides other factors. These findings underscore the critical importance of developing effective UV-blocking solutions. ©2024 IEEE.

关键词： Polydimethylsiloxane

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A novel method to emulate the peak current-mode control in ripple-based switching regulators

A novel method to emulate the peak current-mode control in r...

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2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Cacciotto, Fabio Rizzo, Santi Agatino Industrial & Power Conversion Division St Microelectronics Catania Italy University of Catania Department of Electrical Electronic and Computer Engineering Catania Italy

ISBN: (纸本)9798350316445

This paper presents a novel method that permits emulating a peak current-mode control (PCMC) scheme in switching regulators using ripple-mode control (RMC). Differently from the traditional RMC, the switching current is regulated cycle-by-cycle, like in a traditional PCMC, thus maintaining constant switching frequency operations over a large portion of the operative conditions. Hence, the proposed method avoids the operative dependence on the switching frequency that may suffer the converters based on RMC, while maintaining the simplicity and good dynamic properties of RMC. The paper first provides a theoretical analysis of the new method, supported by a set of simulations that demonstrate the feasibility and benefits of the method. Finally, a bench analysis on a dedicated prototype has confirmed experimentally the good agreement with the theoretical prediction. © 2023 IEEE.

关键词： current-mode control discontinuous conduction mode Flyback converter quasi-resonant operation

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Adaptive Fault Detection Scheme Using an Optimized Self-healing Ensemble Machine Learning Algorithm

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 1145-1156页

作者： Levent Yavuz Ahmet Soran AhmetÖnen Xiangjun Li S.M.Muyeen Electrical and Computer Engineering Department in Abdullah Gül University Kayseri 38080Turkey Department of Electrical and Computer Engineering College of EngineeringSultan Qaboos UniversityAl-KhoudMuscat123Oman Department of Electrical Engineering Qatar UniversityDoha 2713Qatar State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems China Electric Power Rescarch InstituteBeijing 100192China

This paper proposes a new cost-efficient,adaptive,and self-healing algorithm in real time that detects faults in a short period with high accuracy,even in the situations when it is difficult to *** than using traditional machine learning(ML)algorithms or hybrid signal processing techniques,a new framework based on an optimization enabled weighted ensemble method is developed that combines essential ML *** the proposed method,the system will select and compound appropriate ML algorithms based on Particle Swarm Optimization(PSO)*** this purpose,power system failures are simulated by using the PSCA D-Python *** of the salient features of this study is that the proposed solution works on real-time raw data without using any pre-computational techniques or pre-stored ***,the proposed technique will be able to work on different systems,topologies,or data *** proposed fault detection technique is validated by using PSCAD-Python co-simulation on a modified and standard IEEE-14 and standard IEEE-39 bus considering network faults which are difficult to detect.

关键词： Decision tree(DT) ensemble machine learning algorithm fault detection islanding operation k-Nearest Neighbor(kNN) linear discriminant analysis(LDA) logistic regression(LR) Naive Bayes(NB) self-healing algorithm

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