News

C37.90.1: IEEE Standard for SWC Tests for Relays and Relays Systems Associated with Electric Power Apparatus

Two types of design tests for relays and relay systems that relate to the immunity of this equipment to repetitive electrical transients are specified. Test generator characteristics, test waveforms, selection of equipment terminals on which tests are to be conducted, test procedures, criteria for acceptance, and documentation of test results are described. This standard has been harmonized with IEC standards where consensus could be reached.

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Wind Turbine Placement Research Facility

Researchers from California Institute of Technology have been conducting a field tests at an experimental two-acre wind farm in northern Los Angeles County. The farm, known as the Field Laboratory for Optimized Wind Energy (FLOWE), houses 24 10-meter-tall, 1.2-meter-wide vertical-axis wind turbines (VAWTs) - turbines that have vertical rotors.

Posted in: Wind Power, Energy Efficiency, Renewable Energy, Energy, News, Videos, GDM

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Electronic "Bucket Brigade" Could Boost Solar Cell Voltages

If solar cells could generate higher voltages when sunlight falls on them, they’d produce more electrical power more efficiently. Ferroelectrics - materials with an overall electrical polarization - can develop very high photovoltages under illumination. Berkeley Lab researchers have now figured out exactly how this photovoltaic process occurs.

Posted in: Solar Power, Energy Efficiency, Renewable Energy, Energy, News, GDM

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MUTE: The Efficient City Car

MUTE, an electric vehicle from the Technische Universitaet Muenchen (TUM), is an agile, sporty two-seater for regional road traffic. Its lithium-ion battery is designed to guarantee a range of at least 100 kilometers. When needed, a zinc-air battery serves as a range extender.

Posted in: Batteries, Electronics & Computers, Energy Storage, Energy Efficiency, Energy, Transportation, News, GDM

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Boost for Energy Storage Systems

Batteries could get an upgrade from an Oak Ridge National Laboratory discovery that increases power, energy density, and safety while reducing charge time. The results could also have significance for applications in stationary energy storage systems for solar and wind power, and for smart grids.

Posted in: Batteries, Electronics & Computers, Smart Grid, Green Design & Manufacturing, Energy Storage, Solar Power, Wind Power, Energy Efficiency, Renewable Energy, Energy, News, GDM

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Electricity and Carbon Offsets from Hog Waste

A system constructed by Duke University and Duke Energy on a hog finishing facility converts hog waste into electricity and creates carbon offset credits. Google, which invests in carbon offsets to fulfill its own carbon neutrality goals, announced its endorsement of the project this week.

Posted in: Pollution, Waste-to-Energy, Remediation Technologies, Green Design & Manufacturing, Greenhouse Gases, Renewable Energy, Energy, News, GDM

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Innovative Heat-Regulating Building Material

Researchers at the University of Nottingham Ningbo, China (UNNC) have invented a material that can retain and release heat according to specific temperature requirements. The material could be used in both new and existing structures and offer considerable energy savings.

Posted in: Building Technologies, Pollution, Solar Power, Energy Efficiency, Energy, Lighting, News, GDM

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