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Universal Wireless Powered Terminals for Robust Overhead Transmission Line Monitoring

Changsong Cai, Junhua Wang, Hang Jing, Fan Zhang, Pengcheng Zhang, Zhijian Fang, Ying-Guo Zhou
2019 IET Power Electronics  
Experimental results prove the feasibility, and the system displays a robust transfer performance with various high-voltage insulators.  ...  Analyses of the WPT system crossing high-voltage insulators string indicate that system characteristics and energy loss vary under different insulation conditions.  ...  [22] proposed a CCL topology-based WPT system for monitoring terminals on the low-voltage side of transmission lines, yet it is a common mid-range power transfer system without considering the actual  ... 
doi:10.1049/iet-pel.2019.0206 fatcat:uhojdp7vlvarxf6dnxmfffiwia

A Clamping Circuit Based Voltage Measurement System for High Frequency Flying Capacitor Multilevel Inverters

Georgios Kampitsis, Efstratios Batzelis, Paul D Mitcheson, Bikash C. Pal
2022 IEEE transactions on power electronics  
In this paper we designed and developed a new FC measurement system, based on precise sampling of the inverter switching node voltage, through a bidirectional clamping circuit.  ...  compact, fast, and accurate FC voltage monitoring is also increasing.  ...  CONCLUSION In this paper we introduced a new AC-side monitoring system, based on a bidirectional voltage clamping circuit, for the precise extraction of the FC voltage levels in MLI.  ... 
doi:10.1109/tpel.2022.3174062 fatcat:nbtpyzdxajdodggl7kgxbyny3i

Modular Multilevel Converter with Sensorless Diode-Clamped Balancing through Level-Adjusted Phase-Shifted Modulation [article]

N. Tashakor, M. Kilictas, E. Bagheri, S. Goetz
2020 arXiv   pre-print
The main problem with a diode-clamped topology is that it can only balance the module voltages of a string in one direction; therefore, it cannot provide a completely balanced operation.  ...  However, their well-known advantages come at the price of complicated balancing, high-bandwidth isolated monitoring, and numerous sensors that can prevent MMCs from expanding into highly cost driven markets  ...  However, tracking the module voltages is a prerequisite that can involve a costly monitoring system with an isolated high-bandwidth interface and computationally demanding algorithms [10] [11] [12] [13  ... 
arXiv:2009.11177v1 fatcat:66elqs3ysjg77bk2lhbkm3nk7u

A Comparison of CT Secondary Open Circuit Protection SystemTechnologies

Jeff Robertson
2018 The Journal of Engineering  
These devices are based either on a silicon carbide varistorbased technology or on a gas discharge tube-based technology. The purpose of this study is to compare the performance of these devices.  ...  Should a current transformer (CT) secondary winding be left in or inadvertently become open circuited while the primary is energised, then damage may occur to the CT -leaving it inoperable or seriously  ...  used in a high-impedance relay system.  ... 
doi:10.1049/joe.2018.0275 fatcat:6tbcokuv6jg5xp66qgrpudwpyu

Energy Harvesting Techniques for Monitoring Devices in Smart Grid Application

H Pavana, Rohini Deshpande
2020 2020 Third International Conference on Advances in Electronics, Computers and Communications (ICAECC)  
Wireless sensor nodes are used to monitor physical parameters at diverse locations. They find extensive applications in military, health care industries, environmental monitoring and smart grids.  ...  Energy harvesting is a process of capturing, storing and conditioning ambient and residual energies for future use.  ...  [24] propose a magnetic field-wind energy harvesting system. The harvesting device is clamped to the 110kV high voltage transmission line.  ... 
doi:10.1109/icaecc50550.2020.9339526 fatcat:zuplez6h6jdaznh35nlj7q7pjy

Performance Analysis of Diode Clamped Five-Level Inverter integrated PV Grid system using Soft computing based MPPT Scheme

M. Eswara Prasad
2021 International Journal for Research in Applied Science and Engineering Technology  
The performance indices including PV current, DC link voltage and %THD of diode clamped inverter based grid connected PV system is compared with conventional two-level Inverter.  ...  Abstract: This paper focuses on diode clamped five-level inverter for the application of PV system. Carrier based phase disposition method is adopted for control of inverter switches.  ...  Control systems monitor and adjust the power output of your photovoltaic (PV) array on a continuous basis in either voltage control mode or current control mode, respectively.  ... 
doi:10.22214/ijraset.2021.39065 fatcat:bf62bohqxfgabe6xohv326b3le

Novel press pack IGBT device and switch assembly for Pulse Modulators

Philip Bill, Adriaan Welleman, Esie Ramezani, Soto Gekenidis, Reto Leutwyler
2011 2011 IEEE Pulsed Power Conference  
The device has excellent current sharing between the individual chips, no wire bonding, and it will be shown that the advantages of the new design are high peak current at high dt/dt and high switching  ...  The device has a collector-emitter voltage Vces of 4500V and is offering a chip set combination of 85% IGBT and 15% diode dies.  ...  Since 2002, ABB is producing so called StakPak TM press pack IGBT devices [1] in high volume for High Voltage DC Transmission (HVDC) systems.  ... 
doi:10.1109/ppc.2011.6191655 fatcat:tv54y4apyjgmxob52wfvbhrft4

Carbon-nanotube-based Nano Electromechanical Switches

SangWook Lee, Anders Eriksson, AbdelrahimA. Sourab, EleanorE. Campbell
2009 Journal of the Korean Physical Society  
Two different types of nano electromechanical switches, cantilever type and doubly clamped type, will be introduced.  ...  Both dc electromechanical properties and high frequency measurements are used to study the switching performance.  ...  Figure 5 (b) shows the results of monitoring the current through the doubly clamped NEM switch as a function of time. 5V of gate voltage was repeatedly turned on and off with 5 seconds of duration time  ... 
doi:10.3938/jkps.55.957 fatcat:hrbhwkyoebf6vluhirdfhu4zkq

Voltage clamp methods for the study of membrane currents and SR Ca2+ release in adult skeletal muscle fibres

Erick O. Hernández-Ochoa, Martin F. Schneider
2012 Progress in Biophysics and Molecular Biology  
The aim of this article is to present an historical perspective of the voltage clamp methods used to study skeletal muscle E-C coupling as well as to describe the current status of using the whole-cell  ...  In studying the origin and mechanism of voltage dependency of E-C coupling a variety of different techniques have been used to control the voltage in adult skeletal fibres.  ...  Consequently, no current directly generated by the SR Ca 2+ release channels is detected by the voltage clamp system. Therefore, SR Ca 2+ release must be measured using a second monitoring system.  ... 
doi:10.1016/j.pbiomolbio.2012.01.001 pmid:22306655 pmcid:PMC3321118 fatcat:2dg5qar6pbatlnl26crz6bnh3i

Perspectives of Convertors and Communication Aspects in Automated Vehicles, Part 1: Convertors and Condition Monitoring

U. Mohan Rao, Anant K. Verma, Naresh K. Darimireddy, I. Fofana, Chan-Wang Park, B. Vedik
2021 Energies  
Condition-monitoring issues concerning the abnormalities of electrical components, high switching frequencies, electromagnetic interference, leakage currents, and unwanted joint ruptures have also been  ...  A critical survey has been conducted on high energy-efficient bidirectional converters, various topologies that effectively meet the automated vehicle requirements, and 24 GHz/77 GHz low-profile antennas  ...  Fault detection based on gate-voltage monitoring [57] . Fault detection based on gate-voltage monitoring [57] . Fault detection based on gate-voltage monitoring [57] .  ... 
doi:10.3390/en14071795 fatcat:u754mb67ijat5cellp3eseuxae

Patch-clamp amplifiers on a chip

Pujitha Weerakoon, Eugenio Culurciello, Youshan Yang, Joseph Santos-Sacchi, Peter J. Kindlmann, Fred J. Sigworth
2010 Journal of Neuroscience Methods  
By reducing patch-clamp amplifiers to a millimeter size micro-chip, this work paves the way to the realization of massively-parallel, high-throughput patch-clamp systems for drug screening and ion-channel  ...  We present the first, fully-integrated, two-channel implementation of a patch-clamp measurement system.  ...  An important part of such highly-parallel recording systems is a high-density array of patch-clamp amplifiers.  ... 
doi:10.1016/j.jneumeth.2010.06.030 pmid:20637803 pmcid:PMC2978236 fatcat:3ioxkclhnner3m2d2ao6wqotmy

Diagnosis and localization of fault for a neutral point clamped inverter in wind energy conversion system using artificial neural network technique

M. Abid, S. Laribi, M. Larbi, T. Allaoui
2022 Electrical Engineering & Electromechanics  
bipolar transistor open-circuit faults in a three-level diode-clamped inverter of a wind energy conversion system predicated on a doubly-fed induction generator.  ...  To attain high efficiency and reliability in the field of clean energy conversion, power electronics play a significant role in a wide range of applications.  ...  -phase neutral point clamped inverter monitoring system is built using the stator current spectrum analysis technique paired with the artificial neural network.  ... 
doi:10.20998/2074-272x.2022.5.09 fatcat:mimci6caindbhk52vsp55t3w5e

Three-level modified sine wave inverter equipped with online temperature monitoring system

Suroso Suroso, Ahmad Khafidz, Winasis Winasis, Hari Siswantoro
2020 TELKOMNIKA (Telecommunication Computing Electronics and Control)  
Test outputs demonstrated that the proposed system worked properly generating a three-level modified sine wave voltage, with online temperature monitoring system.  ...  Adding online temperature monitoring system makes easier in monitoring of circuits to prevent the excessive faults of inverter. Some computer-based test data are shown and discussed.  ...  In addition, in a modern power system, a real time monitoring system of inverter is an important aspect to ensure the inverter works well as required [31] [32] [33] .  ... 
doi:10.12928/telkomnika.v18i2.14848 fatcat:tlb522gtxndopdgsrpwxe7xl3m

Prognostics Framework for Power Semiconductor IGBT Modules through Monitoring of the On-State Voltage

Nicolas Degrenne, Chihiro Kawahara, Stefan Mollov
2019 Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM  
This paper presents a literature review and an overview of original contributions on diagnostic and prognostic technologies for IGBT power modules based on the monitoring of the on-state voltage (Von).  ...  It is effectively detected by measuring Von at the Zero Temperature Coefficient (ZTC) current value. Next, a method is presented to estimate the die temperature.  ...  (at high current) Average Von jump 5% voltage increase (at high current) @ High current of 90A 18mV 33.2mV 90mV @ ZTC of 35A 7mV 12.8mV 35mV  ... 
doi:10.36001/phmconf.2019.v11i1.829 fatcat:b5qwpdirtbggze46os5d76zome

Investigation and Design of On-Chip Power-Rail ESD Clamp Circuits Without Suffering Latchup-Like Failure During System-Level ESD Test

Ming-Dou Ker, Cheng-Cheng Yen
2008 IEEE Journal of Solid-State Circuits  
The latch-on ESD-clamping NMOS, which is often drawn with a larger device dimension to sustain high ESD level, conducts a huge current between the power lines to perform a latchup-like failure after the  ...  During the system-level ESD test, where the ICs in a system have been powered up, the feedback loop used in the power-rail ESD clamp circuits provides the lock function to keep the ESD-clamping NMOS in  ...  The voltage and current waveforms on DUT (at node) after TLU test are monitored by the oscilloscope. B.  ... 
doi:10.1109/jssc.2008.2005451 fatcat:ylc3mxzterf6pnngeowyuuh6wm
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