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Why is it important that the rotor is as high up in the sky as possible on a wind turbine?
Wiki User
∙ 11y ago
The higher you go, the stronger the wind. Strong wind will generate the most electricity.
Wiki User
∙ 11y ago
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What happens inside a wind turbine?
usually an wind turbine consists of large gears at its shaft point which produces slow speed to high speed to run the generator coupled to it
What causes of generator bearing vibration?
Bowing of the rotor from high speed-high heat conditions at peak operation.
How does a high frequency induction motor work?
In a high frequency induction motor, EMF is induced leading to current flow. Torque in the rotor coil increases. As frequency increases, Impedance of the Rotor increases and currency reduces.
How is energy released in the reactor made to drive a turbine?
The energy released in a nuclear reactor is in the form of heat. This heat is used to boil water and produce high pressure steam which then drives the turbine.
What do nuclear power plants use to turn a turbine that is used to rotate the generator?
Steam at high pressure
What is balance piston line of Turbine?
it is used balance axial thrust on turbine rotor due to admitting of high pressure steam in to turbine. it basic purpose is to save thrust bearing.
What is expansion turbine?
differential expansion is refer to differential distance between rotor blade and fix blade.rotor expand toward generator and casing expand toward control valve.when temperature increase ,expansion in casing and rotor.so rotor mass is less than casing which rotor expand more than casing.
Why is multistage used in steam turbine?
multistage is used because the expansion of high pressure steam will be gradual and as a result the rotor wont vibrate.suppose we have only 1 stage of blades in a turbine, hence all the steam will expand in the given stage and the speed of the rotor will be in high range around 30,000m/s, which is very difficult to control and operate the turbine.
What is the need for gas turbines?
gas turbine are used for expansion of high pressure gas,which rotates the rotor coupled with generator and hence electricity is finally produced.Gas turbine operate on brayton cycle.
How does a wind turbine operate?
The Wind Turbine Generator (WTG) is broadly divided into three parts. • Tower • Nacelle • Rotor The tower of wind turbine generator supports the nacelle and the rotor. The nacelle contains the key components of the wind turbine, including the gear box, the electrical generator, control panels etc. The rotor blades convert the kinetic energy of the wind to electrical energy through gear box and generator. The hub of the rotor is attached to the gear box. The gear box has a low speed shaft for its input. The high-speed shaft of gear box rotates at approximately 1500 revolutions per minute (RPM) to drive the electrical generator system. The heart of the wind turbine is its controller, which is responsible for the operation of the whole turbine. The embedded software in the controller monitors the various inputs and other condition and controls/actuates the outputs accordingly.
How much eletricity does 500 wind turbines put out?
Depends on the type and size of the wind turbine and in which area they are set up. Am modern Wind turbine with a + 100 m Rotor and a base over 140 meters high will produce 3+ Megawatts easily
Why the steam turbine needs preheating before the operating?
there are stages, fixed blades on the turbine shell and rotating blades on the rotor. They are very close together sooo, because the steam enters at one end of the turbine it heats that area first and it expands the metal there faster than at the other end causing it to rub. if you heat it slowly the turbine casing and the rotor grow at ~ the same rate so the stages don't rub together. If you heat too quickly,by just admitting a high volume of steam, the rotor heats up to fast, because of it has less metal to heat up, it rubs the fixed blades. this is called going long (the rotor is longer than the tolerances between the fixed blades on the casing)
What is HP and LP turbine expansion?
HP Turbine is High Performance Turbine LP Turbine is Low Performance Turbine
How you construct a weightless turbine?
Essentially a turbine looks like a jet engine in reverse, where steam, gas, or liquid is forced through at speed or high pressure to turn a central rotor. if we cut one open the turbine looks like a series of fans inside a tube. Each fan from the from of the tube gets progressively smaller pitched blades.In between each moving blade is a static fan blade to redirect the wake of the previous blade section and increase the speed of the turbine rotor.
Why to out bleed steam in turbine?
When steam contains liquid droplets while doing work at high temperatures, the water droplets can etch metal. To combat this, steam can be superheated or the pressure of the system is reduced.
What is tripping speed?
in a steam turbine, it is the speed at which the turbine should not go above. some time they call it overspeed trip. because the turbine rotor and berings are not design for such high speed and is not capable to handle this huge cenerfugal forces. usually there is two type of trip system: Electronic and Mechanical. some Steam Turbins have both protaction system.
What is effect on turbine generator if frequency is high or low?
turbine will trip
