high voltage papers
Negative High Voltage Power Supply (HVPS) For Laser Beam Printer Applications
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ABSTRACT A novel negative high voltage power supply that features the high input to output step-up voltage conversion ratio characteristics is presented. The proposed circuit features the reduced voltage stresses of the components compared to those of the conventional
High-Voltage MOSFET compact modelling
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Low Voltage Part Main Physical and Electrical Parameters TOX 50· 10-9 08 Gate oxide thickness. If TOX= 0 then COX is used. m COX 0.7· 10-3 08 Gate oxide capacitance per unit area. F/m2 VFB-1.1-88 Flat-Band voltage at source end of channel. If VFB=-103 then
Lumped parameter model for high frequency partial discharge estimation in high voltagetransformer
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ABSTRACT Lumped Parameter Model is well known in solving high frequency signal propagation in high voltage transformer windings. At Southampton University, the modelling technique has been improvised and employed to solve partial discharge (PD) problem
Electrochemical behavior of intermetallic phases in sulfuric acid at high voltage–anodization of Al7Cu2Fe and MgZn2 phase
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ABSTRACT The purpose of this article is to characterize the electrochemical behavior and the corrosion layer of bulk phases, Al7Cu2Fe and MgZn2, in the anodization electrolyte H2SO4 200 g/l at the open-circuit potential and at high voltage until 20 V. A rapid dealloying
Implementation of Digital Signal Processor Based Digital Controller for High Voltage Switch Mode Power Supply
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ABSTRACT The Paper is based on Design and implementation of TMS320F28035 Digital Signal Processor (DSP) based digital controller for 2 kW switch mode power supply (SMPS). In the earlier research has implemented the analog controller, In the analog
Development of High Capacitance, High Voltage BME X7R Multi-Layer Ceramic Capacitors
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ABSTRACT The need for high capacitance coupled with high voltage performance has driven KEMET’s development of a new range of surface mountable, multi-layer ceramic capacitors (MLCC). These X7R capacitors with nickel inner electrodes are designed for voltage
POLYMER MATRIX COMPOSITES IN HIGH VOLTAGE TRANSMISSION LINE APPLICATIONS
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The primary purpose of the weathersheds is to increase the leakage distance between the energized and ground ends of the insulators and to protect the GRP rod against the outside environment. Today, common housing materials are ethylene-propylene rubbers, different
Charge Lifetime Study of K2CsSb Photocathode Inside a JLAB DC High Voltage Gun
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ABSTRACT Two photocathodes are frequently considered for generating high average current electron beams and/or beams with high brightness for current and future accelerator applications: GaAs: Cs and K2CsSb. Each photocathode has advantages and
PRELIMINARY EXPERIMENT ON VOLTAGE DROOP COMPENSATION FOR HIGH POWER MARX MODULATORS
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P Chen, M Lundquist, D Yu ,mH ,accelconf.web.cern.ch ABSTRACT Marx modulators, promising higher efficiency, longer lifetime and reduced cost compared with existing hard tube modulator options, are under intensive research. In this article, we describe the progress of work on our voltage droop compensation scheme for a
Cooling of electrically insulated high voltage electrodes down to 30 mK: Dynamic measurements
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ABSTRACT AEgIS is an antimatter experiment, using high voltage electrodes at 100 mK. Two possible principles to cool these electrodes with a dilution refrigerator are investigated: the Rod and the Sandwich. Both designs are described in detail in . The Sandwich design
High Voltage Pulsed Discharge
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Air core inductor High Voltage Pulsed Discharge Charge Pumps: Uses Capacitors to create a higher or lower voltage power source Introduction to high voltage circuits • Fast discharge possible, but factors that influence initial discharge need to be better understood
Numerical Vision of Pre-Arc Gaseous Discharge Progress in Air under Ultra High VoltageStress
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ABSTRACT According to importance of gaseous breakdown in high voltage switching technology, a numerical analysis of pre-arc discharge progress in air under fast high voltage pulses has been presented. The results of simulation for a gaseous spark gap have been
Transient Analysis of the Triggering Behaviour of High Voltage Fuses
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F Loos, HD Lie ,uk.comsol.com ABSTRACT The aim of this work is to investigate the triggering behaviour of safety fuses for mobile on board supply systems as they are used in modern automobiles (see Figure 1). Furthermore, high voltage fuses with tensions of 400 V to 600 V will be developed for
Semiconductor nanosecond high-voltage and high-power generator for Plasma Corona Discharge Reactor
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M Balcerak ,mechatronika.polsl.pl ABSTRACT In this paper, the electrical characteristics of the positive pulsed corona in a wire– plate type reactor are investigated. The discharge current lasts less than 100ns. The voltage,
NOx Removal Using Dielectric Barrier Discharges in a Wire-cylinder Pellets-filled Reactor Stressed by High Pulse Voltage
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ABSTRACT This paper is aimed at investigating the nitrogen oxides (NOx) removal using dielectric barrier discharges (DBD) in a wire-cylinder reactor filled with dielectric pellets and stressed by high pulse voltage. The effects of various parameters (the voltage amplitude,
FAULT PROTECTION SYSTEM IN A REGULATED HIGH VOLTAGE POWER SUPPLY (80 KV, 130A) FOR NEUTRAL BEAM INJECTOR
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ABSTRACT Regulated High Voltage Power Supply (RHVPS) system has been developped at Institute for Plasma Research (IPR) for use with the Neutral Beam and RF applications. The highest ratings manufactured so far is 80 kV, 130 A. The system is developed in house
1.2 The High Voltage Laboratory
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The lectures and laboratory classes listed in the following section are part of the standard curriculum of the Electrical Engineering Department and are organized and conducted by the staff of the Power Systems and High Voltage Laboratories. Details of the entire
Use of High Voltage Electrical Stimulation to Curb Edema in Post Surgical Patients
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DM Testa, C LVT ,healthyultrasound.com Cryotherapy has long been advocated for controlling edema after orthopedic injuries or post surgery. However recent human studies show that cold treatment must be applied as soon as possible after the traumatic event to successfully curb edema formation. Icing has
THE TEST AND MEASUREMENT DEVICES FOR HIGH VOLTAGE
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M Krbal ,feec.vutbr.cz ABSTRACT High voltage presents a very perspective area of the power engineering. The test and measurement devices for high and very high voltages are typically located in a large measuring and testing laboratories. So their requirements for space and financial costs
High Voltage Live Works: Comparative Safe Distance Approach Calculation
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ABSTRACT. This work is devoted to a comparative study of the Safe Approach distances calculations when live works on high voltage structures are to be performed. These distances must be determined by the most rigorous way in order to ensure a total security
Honeycomb discharge generated with a single high voltage power supply for activating catalyst
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Abstract Atmospheric pressure discharge plasma has been widely studied with the intention to apply for many fields, especially to environmental protection. Diesel exhaust cleaning using the non-thermal plasma is one of the most promising applications. We have studied
Electrocoalescence of Field Crude Oil using High voltage Direct Current
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ABSTRACT In the treatment of crude oil from oil wells, entrained water is removed principally by using chemical demulsifiers or heat treatment. There are, however, emulsions of water in oil which have been stabilized by the presence of surface active agents in the
ALBA HIGH VOLTAGE SPLITTER-POWER DISTRIBUTION TO ION PUMPS
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ABSTRACT High Voltage Splitter (HVS) is an equipment designed in Alba that allows a high voltage (HV) distribution (up to+ 7kV) from one ion pump controller up to eight ion pumps. Using it, the total number of high voltage power supplies needed in Alba’s vacuum
Investigation of the Life Curve for High Voltage Cable Insulation
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ABSTRACT This paper covers test and visualisation methods related to electrical treeing resistance of power cable insulations. The unit was designed for investigation of electrical tree inception that allows to obtain the life curve for XLPEs, the example of such curve is
Silicone technology for reliable performance of joints and terminations for high voltage polymer power cables
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ABSTRACT Since decades, high voltage polymer cable systems are the backbone of our power supply. In recent years, they’ve become more important. Significant parts of cable systems are their accessories, the terminations and joints. Reliability, costs and easiness
Atmospheric pressure plasma microjet driven by high voltage kilohertz signals
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A plasma microjet system operating with helium at atmospheric pressure has been fabricated and investigated. The fabrication is based on a dielectric-barrier discharge driven by high voltage sinusoidal signals of audible frequencies. The produced jet is considered
A Cockcroft-Walton High-Voltage System for the ANDY Electromagnetic Calorimeter
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? Motivations for a Cockcroft-Walton HV system ? Design and principles of operation ? Control system overview ? Initial test results ? Mass production ? Cost and lead times ? Testing and
High-Voltage Nanosecond Pulse Discharge in a Low-Pressure Preionized Medium
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A disharge, created by superposition of a steady-state RF electric field and single high- voltage pulses, is being studied. RF field sustains a capacitively coupled weakly-ionized low- pressure plasma, to which the high-voltage pulses are applied. It is demonstrated, that this
TAx REVENUE FROM AN INSTALLED HIGH VOLTAGE TRANSMISSION LINE: AG uide to FiscAl impAct AnAlysis in montAnA And idAho
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Background Local government officials and other decision makers involved in the permitting process for the Mountain States Transmission Intertie (MSTI), a 500 kV electric transmission line proposed to run from central Montana to south-central Idaho, seek information about
Study of DBD electrostatic precipitator under different high voltage waveforms
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ABSTRACT This experimental work is aimed at evaluating the effects of the high voltage waveforms (sine, square and stair) on the efficiency of a wire-to-square tube electrostatic precipitator using dielectric barrier discharge. The input parameters under study are: the
High Performance Wideband CMOS CCI with High Voltage Swing
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ABSTRACT In this study, low-voltage, high performance and wideband CMOS first generation current conveyor (CCI) is proposed. The proposed CCI has very low equivalent impedance on port X. It also has high voltage swings on input and output ports and wideband current
Discharge characteristics of glow discharge in atmospheric Argon excited by sub-microsecond high voltage pulses
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ABSTRACT The sub-microsecond high voltage pulse excited glow discharges in atmospheric argon are studied. The discharge is generated between two copper electrodes both covered with ceramic sheets. The electrical characteristics of two discharge events in each voltage
Proposal of a New High Step-Up Hybrid Switch Converter with Reduced Switch VoltageStress
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ABSTRACT In this paper a new step-up DC-to-DC converter with high voltage conversion ratio with small voltage stress is presented. The converter is suitable for the applications where high voltage conversion ratio is required. The proposed converter is different from the
Analysis of the possibility of using ultraviolet radiation in the diagnosis of high voltage insulators
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The scope of this paper considers possibility determination and application area indication of a camera for ultraviolet radiation recording in diagnosis of linear insulators. Measurements results of ultraviolet radiation emitted by partial discharges (PDs)
Novel additives for protection of high voltage cathode
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Rechargeable lithium-ion batteries, due to their high energy density and long cycle life, have been widely used in mobile electric devices . There has also been an increase in demand for high energy density batteries for electric vehicles and the storage of renewable energy
TECHNICAL IMPLEMENTATION OF CROSS BONDING ON UNDERGROUND HIGH VOLTAGELINES PROJECTS
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ABSTRACT In three-phase underground systems of monopole cables the metallic sheaths are connected to earth at certain points of the circuit. The alternated current that flows on the conductor core causes energy losses on the sheaths due to the inductive and Foucault
High Voltage DC Transmission-Web course
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In early invention of electric energy, dc power was used but due to limitations of low voltage dc systems, ac systems become popular. With increase interconnection and loading of power system, the factors such as are reactive power, stability, power control, etc, impose
Lightning Critical Flashover Voltage of High Voltage Insulators: Laboratory Measurements and Calculations
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Abstract This paper presents the method for calculation of lightning critical flashover voltage (CFO) of high voltage insulators. Flashover occurrence on overhead transmission line insulators for 110 kV, 220 kV and 400 kV networks was studied using the leader
ONLINE LEAKAGE CURRENT MONITORING SYSTEM USING TIME-FREQUENCY DISTRIBUTION ON HIGH VOLTAGE INSULATOR
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ABSTRACT Leakage current frequency components are frequently used as a tool for surface condition monitoring on polymeric insulation material and their pollution severity. Fast Fourier Transform (FFT) is one of the methods that are applied for the analysis, but it has
AC-charged High Voltage Trigger Generator with an Optical Control Signal
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ABSTRACT Trigger generator is a significant device for triggering the high voltage spark-gap switch. We present the relation between breakdown delay at the load and the polarity of output voltage of trigger generator with regard to variations of pressure and how charging
HIGH-VOLTAGE ACCELERATORS INTENDED TO PRODUCE CONTINUOUS AND PULSE NEUTRON FLUXES
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ABSTRACT Recently, in NIIEFA a series of high-voltage accelerators intended to produce continuous and pulse neutron fluxes with a yield of 1010Y1012 n/s has been designed. The facilities designed can be used for operation in the continuous, microsecond and
Isolation in High-Voltage Battery Monitoring for Transportation Applications
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Battery stacks for transportation can provide hundreds of volts. These high voltages can prove lethal to human beings-and even lower voltages can damage electronic equipment- so safety is a key concern. Although these stacks are inherently dangerous, they must still
Integrated Flyback Topologies for High Step-up Voltage Conversion
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ABSTRACT this paper presents a new methodology to generate high step-up voltage gain converters based on the combination of two standard DC/DC converters. The converters are combined so that their Input sections are integrated reducing the converter component
RECENT ADVANCES IN HIGH-VOLTAGE DIRECT-CURRENT POWER TRANSMISSION SYSTEM
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ABSTRACT The ever increasing progress of high-voltage high-power fully-controlled semiconductor technology continue to have a significant impact on the development of advance power electronic apparatus used to support optimized operation and efficient
SIMULATION AND OPTIMISED REDUCTION OF INDUCED PIPELINE VOLTAGES CAUSED BY HIGH-VOLTAGE LINES ON INDUCTIVELY INTERFERED
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ABSTRACT Electrical power supply systems are expanding concerning spatial dimensions as well as ranges of short circuit and operation currents. These circumstances lead to increasing inductive interferences of buried oil-, gas-, district heating-or water-pipelines,
HOW COULD BE PREVENTED HIGH VOLTAGE DISCONNECTING SWITCHES ‘COLAPSE IN EXPLOITATION.
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ABSTRACT Within the paper are presented, the main causes of 110V High Voltage Disconnecting Switches collapse in exploitation. Ceramic Cylindrical Post Insulators involved in their construction, often break down, due to some of these causes:-freeze of
Fully Adaptive Higher-Order Finite Element Model of Electric Field near High-Voltage Insulator for Outdoor Use
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ABSTRACT. Problems of automatic adaptivity in finite element method of higher order of accuracy are discussed. Particular attention is paid to the hpadaptivity that exhibits the highest level of flexibility and extremely fast convergence. The theoretical aspects are
Impact of High Voltage Shunt Capacitor Banks on General Purpose Circuit Breakers
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M Alawie, Y Filion, A Coutu ,ipst.org ABSTRACT It is well known that during a fault on a bus bar with the presence of a shunt capacitor bank, a large part of the transient current meant to be interrupted by a bus bar or a line general purpose circuit breaker in the case of a reignition comes from the discharge of
CONSTRUCTION OF A NOVEL COMPACT HIGH VOLTAGE ELECTROSTATIC ACCELERATOR
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ABSTRACT A compact proof-of-principle demonstrator system based on a Cockcroft-Walton (or Greinacher) cascade has been successfully built and tested. The plans for a subsequent full- scale vacuum insulated demonstrator system are also explored following the successful
A HIGH REPETITION RATE HIGH VOLTAGE SPARK SOURCE AND ITS
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A HIGH REPETITION RATE HIGH VOLTAGE SPARK SOURCE AND ITS APPLICATION TO THE ANALYSIS OF WEAR METAL IN OILS WW Schroeder, A. Strasheim and JJ van Niekerk National Physical Research Laboratory, CSIR, Pretoria INTRODUCTION Emission spectroscopy
COMPUTATION OF THE POTENTIAL INDUCED ON THE FLUID TRANSPORT PIPELINES BY OVERHEAD HIGH VOLTAGE LINES
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ABSTRACT The paper focuses on the evaluation of the hazardous induced potentials on metallic pipelines that convey fluids such as gas, petroleum, oil and shares the same right-of- way corridors with high voltage (HV) overhead power lines (OHL). For this purpose a
High-voltage analog switches with current-mode control
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ABSTRACT The Paper presents a number of high-voltage analog switch designs. All of them are current-controlled designs, which make them well prepared to operation in presence of high voltage drops of transmitted signals. Possible application areas for presented
Diagnostic Techniques for Assessing Water Treeing Degradation of High Voltage XLPE Cables
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MI Qureshi, AA Al-Arainy, NH Malik ,cigre-gcc.org ABSTRACT XLPE insulated high voltage cables are extensively being used for transmission and distribution of electrical energy and are playing a vital role in the electricity supply systems. One of the most important processes that can adversely affect the performance
A hybrid fiber optic sensor system for multi stress monitoring of high voltage power transformer
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ABSTRACT For condition monitoring of highYvoltage power transformers, a fiberYoptic multiYstress sensing system is suggested by combining fiber grating sensors and mandrel sensors embedded in a fiberYoptic Sagnac interferometer. The gratings and the mandrel
New Energy-efficient High-voltage DC-DC Power Conversion Technology
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ABSTRACT This thesis presents the findings of research on new high-voltage medium- power dc-dc conversion technologies. A current-fed full-bridge step-up high output voltage converter and two multi-level step-down high input voltage converters have been
THE EXPERIMENTAL MEASUREMENTS OF ELECTRIC FIELD AND MAGNETIC FIELD GENERATED BY HIGH VOLTAGE POWER ENERGY
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ABSTRACT The development of the electromagnetic devices, very useful in our daily life, has also some useless effects, which affects the environment and in some cases produce serious unbalance. This paper presents observations on the electric and magnetic field
IMPACTS OF INDUCTIVE AND CONDUCTIVE INTERFERENCE DUE TO HIGH-VOLTAGELINES ON COATING HOLIDAYS OF ISOLATED METALLIC
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ABSTRACT Inductive and conductive interferences of isolated metallic oil-, gas-, water-and district-heating pipelines due to short-circuit and operation currents of highvoltage lines are a well-known problem since the early 1960ies. In these times the first big so called energy
Real Life High Voltage Accident Cases–Teaching Electrical Safety
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ABSTRACT – We discuss the engineering principles of Hi-voltage (any voltage above 600 volts). We cite 4 examples that typify some of the problems facing the Engineer and technician working with Hi-voltages, including geometry considerations, the need to follow proper
Low ESR Aluminium Electrolytic Capacitors for Medium to High Voltage Applications
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ABSTRACT Low ESR (Equivalent-Series-Resistance) aluminium electrolytic capacitors for medium to high voltage applications have been developed, with a typical ESR reduction of up to 30%, in comparison with our current aluminium electrolytic capacitor products. The
High voltage test transformers, construction, design and their application in HV testing system
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ABSTRACT. In this article were described the most frequently used constructions of high voltage test transformers. There were presented defects, advantages and application of describing constructions. There were described how to design high voltage test transformers and
INVESTIGATION OF EVALUATION PARAMETERS FOR INSULATION CONDITION OF HIGH-VOLTAGE ELECTRICAL EQUIPMENT
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In the Sower network the insulation condition of electrical equiSment is the most imSortant factor in guaranteeing the quality and cost efficient oSeration of the Sower system. ReliaEle oSeration of the electrical equiSment relies on the aSSroSriate maintenance and
ONLINE MONITORING AND FAULT DIAGNOSTICS OF MECHANICAL CONDITIONS OF HIGH-VOLTAGE DISCONNECTOR
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ABSTRACT The Hidden Markov Model (HMM), normally utilized in the speech recognition domain, is introduced into the mechanical condition monitoring and fault diagnostics of High- Voltage disconnector, and a unique fault diagnosis methodology is thereby developed