Power Supply Articles

  • Case Study - Aluto Langano Power Plant Rehabilitation

    Aluto Langano, Ethiopia – 2007 The Aluto Langano Geothermal Pilot Plant (ALGPP) is located on the Aluto volcanic complex of the Ethiopian Rift valley, close to the eastern escarpment between Lake Langano and Lake Ziway, some 200 km southeast of Addis Ababa. The Aluto volcanic complex is a young acidic system consisting of domes, lava, and pyroclastic interbeds. The geothermal field was ...

  • Con Edison to pilot $15M virtual power plant project

    New York utility Consolidated Edison (Con Edison) plans to launch a pilot virtual power plant (VPP) project in June to test out the business case for integrating aggregated fleets of residential solar-plus-storage systems into the grid, Jamie Brennan, director of demonstration projects at Con Edison, told Energy Storage Update. The project will link hundreds of solar and battery storage systems ...


    By FC Business Intelligence

  • A Radical Change in Supply and Demand Needed to Reach Paris Agreement

    The climate agreement reached in Paris in December 2015 was an unprecedented global achievement. Delegates from 195 countries agreed to limit global warming to well below 2 degrees C and pursue efforts to limit it to 1.5 degrees C. Signatory countries submitted national climate plans—Intended National Determined Contributions (INDCs)—that will be updated every five years. As ...


    By GLOBE Foundation

  • Large-scale PV power plants : Maintenance Pays Off

    Large-scale PV power plants are an investment in the future. Careful planning and SMA technology perfectly adapted to operator needs ensure that every plant is profitable and produces high yields. Regular maintenance is necessary to guarantee all plant components run safely and optimally, long term. They prevent smaller and larger defects from being overlooked and thus exert a considerable ...


    By SMA Solar

  • These companies are figuring out how to take the toxics out of electronics

    As global consumption of cellphones and other devices soars, industry searches for ways to decrease the threat of chemical components to people and the environment. On a Wednesday in late February 2010, Hewlett-Packard hosted an unusual training session at its offices in Fort Collins, Colorado. The technology company had decided to eliminate ...


    By Ensia

  • Evolution of drought management policies and practices in the United States

    The evolution of United States (US) national and federal drought policies is examined, and the relative effectiveness of the hierarchy of federal, state and local drought management programs and practices is evaluated within the context of changing philosophies of water management. While there is no ‘national’ drought management policy, there is a strong federal policy that attempts to ...


    By IWA Publishing

  • How to measure the direction of current harmonics?

    If the generation side of the point-of-common-coupling (PCC) is essentially an islanded setup consisting of a few specific generators, then the amount of harmonics resulting from the generation "source" can be readily identified in a mathematical fashion from the relative impedance on the generation side of the PCC compared to the combined impedance on the load side of the PCC. (The source of ...


    By GoHz Inc

  • Micropower system modeling with Homer

    The HOMER Micropower Optimization Model is a computer model developed by the U.S. National Renewable Energy Laboratory (NREL) to assist in the design of micropower systems and to facilitate the comparison of power generation technologies across a wide range of applications. HOMER models a power system's physical behavior and its life-cycle cost, which is the total cost of installing and operating ...


    By HOMER Energy LLC

  • The Emerging Power of Microgrids

    Over many decades, the centralized power grid — a one-way flow of electricity, generated by large, remote power plants and distributed over miles of transmission lines to homes and businesses — succeeded in delivering electricity across continents to billions. But in recent years the system’s shortcomings have become increasingly ...


    By GLOBE Foundation

  • Case study: telecommunication component manufacturing

    JMC Tools, formerly ADC Solitra Inc., offers integrated RF solutions for the telecommunications industry worldwide. The product range of the company covers high frequency components and modules for cellular and PCS systems, both analogue and digital. The company has close links with the world’s leading OEM manufacturers of cellular phones and infrastructure and has a strong ...


    By Watman Ltd.

  • From biogas to natural gas - A new renewable fuel supply line

    Continents and countries that depend on fossil fuels, such as Europe, and within Europe, northern Europe, are increasingly looking with interest at renewable energies and are committed to developing such energies as a source for future development. Biogas from different sources is a valuable material for the production of energy, chemical products and bio-fuels. Because it is a renewable energy, ...


    By Energy & Waste S.l

  • The VIY-2 Ground Penetrating Radar

    Abstract The VIY-2 ground penetrating radar (GPR) with unique sounding possibilities and use simplicity is presented at this paper. The VIY-2 GPR combines all units (synchronizer, transmitting and receiving modules, power supply and antenna system) into single case. The VIY-2 GPR communicates with computer via standard interface RS232 or USB 1.0. Utilized by the VIY-2 GPR technical solutions ...


    By Transient Technologies LLC

  • Homogenic solution for food

    Food blending system “USB” is used for mixing of different components. This system are used for preparation directly in the capacity of food compounds or emulsions, for mixing of syrups, cocoa, cakes creams and other types of confectionery liquids. For products blending such as mayonnaise, sauces, ketchups, soups, juices and other compound foodstuff, and also in the confectionery ...


    By GlobeCore GmbH

  • A novel adaptive-fuzzy hysteresis current controller-based active power line conditioners for power quality enhancement

    This paper presents a three-phase shunt active power line conditioner (APLC) for harmonics and reactive power compensation to enhance the power quality. The compensation process is based on sinusoidal extraction control method, which consists of positive-sequence voltage detector to regulate the distorted supply voltage and instantaneous real-power for fundamental component extraction from the ...


    By Inderscience Publishers

  • Electronic water treatment reduces fouling in heat exchangers

    The deposition of material on heat transfer surfaces is called fouling which significantly impacts on the thermal and mechanical performance of heat exchangers. Fouling increases the overall thermal resistance and lowers the overall heat transfer coefficient of heat exchangers as well as impeding fluid flow, accelerating corrosion and increasing pressure drop across the heat ...

  • Analysis, design and control of a two stage improved power quality telecommunication power supply

    This paper deals with the power quality improvement at the utility interface of a telecommunication switched mode power supply (SMPS) of 12 kW rating. The first stage of this SMPS consists of a 6–pulse diode bridge converter that performs ac–dc conversion yielding an unregulated dc voltage. In the second stage, two boost rectifiers are connected together which feed to a boost dc–dc full bridge ...


    By Inderscience Publishers

  • Environmental Assessments – An Important Component of CSR Programs

    Companies and industries strongly engaged in Corporate Social Responsibility (CSR) have taken significant steps in their sourcing policies to reduce unethical and inhuman working conditions by controlling their subcontractors along the supply chain. Until now, the primary focus has been on working conditions, but CSR also encompasses environmental concerns as part of a global sustainability ...


    By SGS

  • The Right Supplies Your Car Detailing Business Needs

    Professionals involved in a car detailing business now utilize powerful and advanced car wash systems specifically designed to simplify a host of cleaning applications involved in getting a vehicle clean. These machines also guarantee superior cleaning results in very less time. Leading suppliers now offer a stunning range of equipment for car cleaning applications. The types of machines used by ...


    By Daimer Industries Inc.

  • Beyond the Brand: leaders in supply chain environmental sustainability

    Companies ignore the magnitude of their supply chain environmental impacts - and the environmental and financial risks and opportunities that they represent-at their own peril, writes James Salo. Republished from Newsweek; with ...


    By Trucost Plc

  • New chip captures power from multiple sources

    System developed at MIT could combine power harvested from light, heat and vibrations to run monitoring systems. Written by David L. Chandler, MIT News Office.You can read the original new in MIT NewsResearchers at MIT have taken a significant step toward ...

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