• Electric Generator

    Rotor is the rotating part of an electric generator and generates a magnetic field. A typical turboalternator in nuclear power plants consists of: Main generator. 4pole hydrogencooled rotor. The rotor winding is made up of hollow conductors through which the hydrogen gas flows. The hydrogen is cooled in the hydrogen/water heat exchangers.

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  • Brushless Alternators

    The exciter has stationary field coils and a rotating armature (power coils). The main alternator uses the opposite configuration with a rotating field and stationary armature. Exciter The exciter field coils are on the stator and its armature is on the rotor. The AC output from the exciter armature is fed through a set of diodes that are also mounted on the rotor to produce a DC voltage. This ...

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  • GENERATOR, EXCITER, AND VOLTAGE REGULATION

    generation, shown in the '½cycle diagram'. As the rotation continues, a voltage is again generated. A close examination of the wiring out of the armature reveals that the connections have become inverted. This results in the opposite polarity of voltage. The diagram at the bottom of the figure shows the resulting buildup and decay and opposite polarity build up and decay again through ...

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  • Electric Machines

    When a threephase AC voltage is applied to the stator, a rotating magnetic field is produced. Since the rotor is already has a constant magnetic field, it tries to align itself to the rotating magnetic field of the stator field, thus generating a torque. The rotor cannot pick up speed instantly due to inertia. Also, the speed of rotation of ...

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  • Brushless Excitation System

    01/05/2016 · Normally there are six poles on the field, so it will produce AC power at a frequency of 150 Hz. This AC power is then converted to DC by Diode Bridge. Diode Bridge is mounted on two wheels which in turn is mounted on the Rotor shaft. This wheel is called Diode Wheel. Both diode wheels are connected to complete a bridge rectifier arm. Figure of whole Brushless Excitation System is shown .

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  • Alternator

    Diagram of a simple alternator with a rotating magnetic core (rotor) and stationary wire (stator) also showing the current induced in the stator by the rotating magnetic field of the rotor. A conductor moving relative to a magnetic field develops an electromotive force (EMF) in it (Faraday's Law). This EMF reverses its polarity when it moves under magnetic poles of opposite polarity. Typically ...

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  • Power Plant Generation Rotating Field Diagram

    Power Plant Generation Rotating Field Diagram. FOB Reference Price: Get Latest Price Ultrafine powder milling plant in mill a typical type of fine grinder is the ball slightly inclined or horizontal rotating cylinder is partially filled with balls, usually stone or metal, which grind material to the necessary fineness by friction and impact with the tumbling sample ...

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  • The essentials of powergeneration systems you MUST know ...

    10/03/2021 · The essentials of powergeneration systems you MUST know in the middle of the night! (on photo: Generator constructed in 1908, mounted in a hydropower station in Lower Austria; credit: gue* via Flickr) The input to the generating machine can be derived from a number of energy sources. For example, in the generation of largescale electric power, coal can produce steam that drives the .

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  • Thermal Power Plant: Definition, Layout, Working Diagram ...

    Role of Thermal Power Plant in the Current Power Generation Scenario: ... this steam strikes to the turbine blade So turbine blades rotate and a turbine is connected to the 3 phase supply generator. The generator generates electricity and there left Steam sends to the condenser to cool and again the cycle starts repeat process. This works like a closed cycle. Thermal Power Plant Layout ...

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  • Power Plant Cooling System Overview for Researchers and ...

    CoalFired Power Plant 2 3 1 4 TS Diagram for Pure Water. 21 2 COOLING SYSTEM TYPES . Cooling system technologies, which differ greatly in the amounts of water withdrawn and consumed, include the following: • Oncethrough cooling 1 • Closedcycle wet cooling • Cooling pond • Dry cooling • Hybrid cooling At present, about 43% of thermoelectric generating capacity is served by ...

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  • Geothermal EnergyDefinition, Working Diagram / Layout ...

    Steam from the separator sends to the turbine for rotating vane and generation of electricity. 3. Generator: This is attached to the turbine and the main work of the generator is to generate steam from the help of the turbine. 4. Power lines: Power lines are attached to the Power House room and it supplies electricity to the various places. 5. Condenser: Some amount of stem which is not used ...

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  • Introduction to Rotating Machines

    through a magnetic field, by mechanically rotating a magnetic field past the winding, or by designing the magnetic circuit so that the reluctance varies with rotation of the rotor. By any of these methods, the flux linking a specific coil is changed cyclically, and a timevarying voltage is generated. A set of such coils connected together is typically referred to as an armature winding. In ...

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  • Rotating Magnetic Field | Electrical4U

    24/02/2012 · In this article, we will try to understand the theory behind the production of rotating magnetic that, we will first imagine one stator of an electric motor where threephase winding is physically distributed in the stator core in such a manner that winding of each phase is separated from other by 120 o in space.. Although the vector sum of three currents in a balanced threephase ...

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  • How A Generator Works | TurbineGenerator

    Let's take a stepbystep look out how a generator works using the diagram above: ( 1) Point 1, from the figure above, is a spinning rotor that is attached to the turbine shaft. The main job of the rotor is to absorb the mechanical energy outside the generator, and use it to create rotational motion. The rotor in a turbine generator could be ...

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  • L2 TB ET EE NPTEL

    was found that 3phase power generation at 50 Hz will be economical and most suitable. Present ... in figure From the terminals of the armature, 3phase power is obtained. Rotor houses a field coil and excited by The field coil produces flux and electromagnetic poles on the rotor surface. If the rotor is driven by an external agency, the flux linkages with three stator coils becomes ...

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  • Excitation in Power Plant Generators: Brief Overview ...

    15/08/2009 · The rotor is a rotating electromagnet that requires a DC ( Direct Current) electric power source to excite the magnetic field. This power comes from an exciter. DC Exciter. In the past, the exciter was a small DC generator coupled to the same shaft as the rotor. Therefore, when the rotor rotates this exciter produces the power for the ...

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  • Steam Turbine and Power Generation – IspatGuru

    28/02/2014 · A typical schematic diagram of afossil fuel powered steam turbine based power plant for electricity generation is given in Fig 1 ... The generator is a rotating field synchronous machine. The steam turbines are directly coupled to their generators. The generators must rotate at constant synchronous speeds according to the frequency of the electric power system. The most common .

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