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How Wind Generator Works

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There are two main categories of wind systems: constant speed. A constant speed induction generator can be connected directly to the grid. The angular velocity of its rotor is controlled by the pitch of the turbine blades. A gear box then raises the RPM to yield 50 or 60 Hz output. Such design is used primarily in high-power utility-scale systems. Variable speed systems use synchronous generators that produce unregulated AC voltage. For a small hobbyist system one can connect the turbine through a rectif...

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Wind Power Calculator: Energy vs Turbine Size vs Speed

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The single most important thing to determine when choosing your home power system is how much electricity it will generate. Wind turbines are usually listed by their rated power. Or rated capacity). Unfortunately, this rating is pretty much useless or even misleading, because it represents just a potential wattage the system can generate at certain ideal conditions. Besides rated wattage, wind generator manufactures also normally provide a so-called Power Curve. 10 m (33 ft). 50 m (164 ft). These data pr...

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Wind Turbines for Home

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THE GUIDE TO WIND POWER TURBINES FOR YOUR HOME. TYPES OF WIND TURBINES. There are two main types of turbines based on the axis on which they rotate: horizontal axis ("propeller-type") and vertical-axis. Both styles have their pros and cons and both are used in home wind generators. The main advantages of horizontal axis. Source: U.S. DOE's Office of Energy Efficiency and Renewable Energy ( EERE. The anemometer monitors the air speed and sends the data to the controller, which starts up the system at a ce...

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Wind Generators for Home Use- Homemade Turbine

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WIND GENERATORS for HOME USE. If you are living in a windy rural area with average annual wind speeds of at least 8-10 mph, it is realistically possible to use a small wind power generator to provide electricity to your house, lower the utility bills or supply an emergency backup power. This guide will tell how it works and things to know to make the right choice. Let's just start with a quick technical reference. The reason wind systems usually use a 3-phase alternator is because rectified 3-phase volta...

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Wind Energy Facts and Calculation

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THE BASIC FACTS ABOUT WIND ENERGY. Any moving object has kinetic energy. In classical mechanics, its amount E. In joules is given by the equation E=mv. Is the mass in kg. Is the speed in m/sec. Air molecules have mass, and when they are in motion, they contain kinetic energy that can be converted into other forms for practical use. HOW MUCH POWER IS IN THE WIND. The wind energy diagram below illustrates the process of energy transfer. If D. In a time t. Is the density of the air (approximately 1.2kg/m.

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Automatic Voltage Regulator (AVR) for Generators

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AUTOMATIC VOLTAGE REGULATION (AVR). Most cheap portable generators have fixed excitation. In such machines, when an alternator is loaded, its terminal voltage V. Drops due to its internal impedance. This impedance is formed of leakage reactance, armature reactance and armature resistance. The V. Also depends on the power factor. Of the load. To maintain V. With a target value and turns ON and OFF the transistor "Q". When "Q" is ON, a current flows through the field winding. When "Q" is OFF, the f...The d...

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Quiet Portable Generators

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YOUR GUIDE TO QUIET PORTABLE GENERATORS. Noise levels are usually measured in decibel (dB). There is common confusion about its definition. If you measure acoustic power. W1 in watts, then dB=10 log(W1/Wo). Where Wo is a reference level equals to 1 picowatt. Microphones normally respond to the sound pressure. Rather than power. Since the power varies with the square of the pressure P, then dB=20 log(P1/Po). Where P1- rms sound pressure in Pascal being measured, Po- a reference level. Library – 35. Of cou...

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How Generators Work & Produce Electricity

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OPERATION OF A GENERATOR. HOW IS AC VOLTAGE PRODUCED? Any electric generator requires the following three main components to work:. Conductor to carry a current;. Relative motion between the conductor and the magnetic field. Most educational diagrams of the alternators for simplicity show a power producing coil spinning between two poles of a permanent magnet. In such an arrangement, the output current from the rotating armature has to flow through slip rings and brushes (see animation. Is F=RPM×P/...