Voltage Management Articles

  • Customer case: Telenor reaps the benefits of remote power

    The Norwegian telco operator Telenor applies Eltek's "remote power" concept in their mobile network, distributing 380 V DC to Remote Radio Units (RRUs) - with significant documented savings as a result. In collaboration with Eltek, the Telenor Technology Centre has developed a solution for High Voltage Distribution which offers completely new opportunities and savings for the development of the ...


    By Eltek AS

  • Marine AC UPS for Critical Offshore Installations

    Equipment installed in ships or offshore installations typically operate under tough conditions, and any possible equipment failures can have serious cost impact. Despite this, products not really suited for the applications are often chosen based on the initial cost rather than looking at the total cost of ownership. One example is the use of a modular marine AC UPS versus the use of a modified ...


    By Eltek AS

  • INDIAN FARMERS CAN GENERATE 800000 MW SOLAR POWER

    INDIAN FARMERS CAN GENERATE 800000 MW SOLAR POWER DANGERS OF CENTRALIZED POWER PLANTS ...


    By AADHUNIK GLOBAL ENERGY

  • Power case study - North Incinerator - Environmental

    Subject Montgomery County's North Incinerator plant, in Dayton, Ohio Situation To meet EPA air pollution control standards for sulfur dioxide emissions, finely powdered limestone needed to be injected into the three incineration units at all times. The operation required approximately 18,000 pounds of powdered limestone a day, and needed to be ...


    By HammerTek Corporation

  • Protection Relay for Shaft Current and Voltage

    Introduction The paper deals with the specific protection relay for all types of generators. The instrument, called Shaft Current and Voltage Protection Relay (SCVP) was developed at KONCAR – Electric Engineering Institute Inc. This instrument is a part of Institute's product line used for monitoring and diagnosis of rotating electrical machines. The most important parts ...

  • Nottingham - Condensing Combi-Boiler case study

    Customer: Mr Tony Goodyear, Heating Engineer Location: Nottingham Heating System: Gas Condensing Combi Boiler installed: 08/07 Problems: New condensing boiler fitted within the past 12 months had failed to rectify noise from pump and problems with air present in ...


    By Vortex Energy Saver

  • Voltage Stabilizer - Buy Voltage Stabilizers Online at Lowest Prices in India

    All of us know what voltage fluctuations can do to electrical appliances like air conditioners, refrigerators, televisions etc. Voltage Stabilizers are designed specifically for this purpose. Voltage Stabilizers regulate voltage and provide constant voltage to your expensive appliances. They prevent permanent damage to appliances caused because of high or low voltage. Choose from a wide ...


    By BatteryBhai.com

  • Change 60Hz to 50Hz Power

    In conventional power supplies, the mains is rectified (that means the negative parts of the main cycle are flipped over to become positive). This gives 50 or 60 positive pulses per second. These pulses are used to charge up capacitors that store the charge between top ups. If you put a scope on the capacitor, you will see a sawtooth waveform that shows the top of the pulse, then the voltage ...


    By Shenzhen Gozuk Co., Limited

  • Black Box for Electrical Machines

    Abstract This article describes a specific monitoring system for electrical machines, called black box for electrical machines (Electrical Machines Black Box, EMBB).  Detailed analysis about problems of harmful working conditions that can occur on all electrical machines has been made. Based on these data and on measurement and control ...

  • ZZ array

    ZZ array can only be used by FlashRES resistivity meter. the array collect 256 AB pairs in express mode, with each current AB injection measure 61 voltage data. In 20 minutes, ZZ array can collect 15,616 data points. Operator can set the On and Off time to reduce the data collection data even less. FlashRES-64 can only use ZZ array, where FlashRES-UNI can collect ZZ array and all the other ...

  • Full waveform data display

    FlashRES resistivity meter displays full current and voltage data when the system is collecting these data. The real time read out of the data effectively helps operator to monitor the data quality. In case the data quality Q factor drops in value, the operator can pause the data collection process and check the background, contact and instrument noise. Displa full waveforms thus protect ...

  • IP data collection

    FlashRES resistivity meter collects 4*N voltages for each AB current injection. When operator sets the instrument collect IP data, the system will default the on time equals to the off time. ZZ finds sometime operators need customise their IP windows, thus FlashRES records all the data and this enables operators to form their own IP windows data with their own window size criteria. ...

  • The amount of data FlashRES can collect in one hour

    FlashRES can collect over 62k data points in one hour. Some of the 62k data however may not be useful to the operator. Operator needs assess the geological data to find which part of the resistivity data is less useful. ZZ provides data filtering software to filter unwanted data points for operators. FlashRES resistivity meter records the whole three curves for each current pair. Users can ...

  • Optimal reactive power dispatch based on the improved seeker optimisation algorithm and statistical analysis

    Optimal reactive power dispatch (ORPD) is one of the important non–linear mixed–variable optimisation problems in power system which includes both continuous and discrete control variables satisfying both equality and inequality constraints. This paper presents a new evolutionary optimisation algorithm to solve the optimal reactive power dispatch problem with operational constraints using the ...


    By Inderscience Publishers

  • Power control strategy for grid connected permanent magnet synchronous generator of a distributed generation unit

    This paper describes the studies on the operation and control of a variable speed wave energy conversion system. The wave energy conversion system considered is oscillating–water–column (OWC) based Wells turbine driven permanent magnet synchronous generator connected to the grid by means of fully controlled frequency converter. In such systems primary aim is to achieve a low distortion, high ...


    By Inderscience Publishers

  • Three–level NPC rectifier–based midpoint converter–fed SRM drive

    This paper deals with a three–level Neutral Point Clamped (NPC) rectifier–based midpoint converter–fed Switched Reluctance Motor (SRM) drive. The three–level NPC rectifier for midpoint converter–fed SRM drive is used for improving power quality at AC mains and to balance the DC link capacitor voltages. The proposed three–level NPC rectifier is designed, modelled and its performance simulated ...


    By Inderscience Publishers

  • Oppositional biogeography-based optimisation for optimal power flow

    This paper describes optimal power flow based on oppositional biogeography-based optimisation (OBBO) in which fuel cost, voltage deviation and power transmission loss functions are individually used as the problem objectives. The feasibility of the proposed method is exhibited for standard IEEE 30-bus and IEEE 118-bus systems and the results obtained by using the proposed approach are compared ...


    By Inderscience Publishers

  • Optimal generation expansion planning considering maximum loadability limit

    This paper describes a new approach to generation expansion planning (GEP) problem to optimise simultaneously multiple objectives such as cost and stability margin. It is formulated as a combinational optimisation problem in order to determine the type and capacity of the new generations as well as their timing and placement. This study presents a comprehensive model of hierarchical optimisation ...


    By Inderscience Publishers

  • Simulation study of dimensional effect on bipolar resistive random access memory

    The dependency of the RRAM device electrical parameters such as set voltage, reset current and resistance on the RRAM cell dimensional scalability is investigated with Monte Carlo simulation to optimise the power consumption of bipolar RRAM. It is found in the simulation that the switching process in bipolar RRAM is related to the cell dimension in the region of 10 nm to 100 nm in terms of its ...


    By Inderscience Publishers

  • Drift Step Recovery Diode Transmitter for High Power GPR Design

    Some elements of the modern ground penetrating radar (GPR) determine its performance factor, resolution and depth of sounding. There are impulse transmitter, ultra-wide-band receiver as well as transmitting and receiver antennas. Improvement of the GPR's parameters is usually achieved by modernization of receiving circuits, antenna design, decreasing of input noises and using of complex ...


    By Transient Technologies LLC

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you