wind power motor Articles
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Small wind turbine emulator with armature controlled separately excited DC motor via analogue electronic circuit
In this paper, a small wind turbine emulator (WTE) using separately excited DC motor is modelled, designed, simulated, implemented and tested. A 1 HP separately excited DC motor is used to emulate the characteristics of the rotor of small wind turbine. The DC motor is driven by a thyristor bridge with closed–loop cascaded PI controller for armature control. A separately excited DC generator with ...
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Sintered Neodymium Magnets
Sintered neodymium magnet is the strongest magnetic material commercially available today. It is largely made of alloy of neodymium, iron and boron, and the chemical formula is Nd2Fe14B. Sintered NdFeB neodymium magnet exhibits high magnetic energy product in small size with high coercive forces. Examples of applications include permanent magnet motors, loudspeakers, magnetic separators, wind ...
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The condition of China's Rare Earth Magnet Industry
The development of rare earth industry is really fast since about 1970s with the development of semiconductor industry, as rare earth materials are used widely in semi-conductor industry. As the global top supply country of rare earth materials, China started to mining and manufacturing of rare earth since 1970s. In about 20 years, rare earth from China had taken about 80% of global market. And ...
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Magnetic Materials
Magnetic materials can produce magnetic fields, which generate forces attracting or repelling ferromagnetic materials and other magnets. Magnetic materials can be divided into soft and hard magnets. Soft magnets are those materials easy to magnetize and demagnetize, while hard magnets are difficult to do so and retain strong magnetism after the removal of applied magnetic field. Hard magnets are ...
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What is Renewable Energy Meter?
Renewable Energy Meter , which refers toanc energelectrimeter that mmeasures the amount ofrenbeingegeneratedwer generation. Different types of renewable energy power generation require very different measurement the products, so renewable energy meter is customized according to different application needs. Renewable energy includes solar energy, water energy, wind energy, biomass energy, wave ...
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Key Design Points of High Frequency Transformer for Switching Power Supply
1.Preface Monolithic tiny switch power supply integrated circuit has the advantages of high integration, high cost performance, the simplest peripheral circuit and the best performance index. It can form an isolated switching power supply without power frequency transformer with high efficiency. From 1994 to 2001, a series of monolithic switching power supply products, such as TOPSwitch, ...
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Nouadhibou wind farm mauritania, West africa - Case Study
Customer: SNIM Wind Turbine: 16 Vergnet GEV MP-C, 275kW, 32m rotor diameter, 55m hub height Total power: 4.4 MW Commissioned: 2011 Operations and Maintenance: SNIM Vergnet GEV MP Wind Turbines Deliver Energy and Cost Savings for SNIM Iron Mine Société Nationale Industrielle et Minière (SNIM), Africa’s second largest producer of iron ore, ...
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All hail the DuraTrack HZ v3: Best-in-class extreme weather mitigation with array technologies
Extreme weather is a clear enemy of utility-scale photovoltaic power plants. A recent trend of increasingly costly extreme wind and hail disasters reinforces this point, wreaking havoc not only with the actual plants in terms of construction timelines and output, but on the availability and rates of commercial insurance for these properties. In choosing how to fight back, PV plants have two ...
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U.S. headed for massive decline in carbon emissions*
For years now, many members of Congress have insisted that cutting carbon emissions was difficult, if not impossible. It is not. During the two years since 2007, carbon emissions have dropped 9 percent. While part of this drop is from the recession, part of it is also from efficiency gains and from replacing coal with natural gas, wind, solar, and geothermal energy. The United States has ended ...
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