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The phrase "Salent Pole" is used to specify a specific internal field winding configuration around the magnet of a generator.
In English, Salient means "sticking out" or "most noticeable or important". Pole refers to the North or South end of a magnet.
If you take a long rectangular magnet with a North and South Pole on each end, and you surround it with electrically conductive material like wire, and you spin the magnet, electrons will flow back and forth in the wire. This is how some generators create electricity.
You can determine if your generator is a salient pole generator by inspecting its internal components. With a salient pole generator, you would notice that the magnetic poles in the magnet are "sticking out" and when passed in proximity to the wire an electrical current is created.
For a salient pole machine, the windings are wrapped around magnets with edges or teeth that stick out.
To read up on the discovery, evolution and present day use of salient pole electricity generating technology:
http://mysite.du.edu/~jcalvert/tech/salpomo.htm
The Dinorwig Power Station in Wales utilizes Salient Pole generators to pump billions of gallons water up a mountain as well as generate electricity when letting it back down again as an electricity storage system:
http://en.wikipedia.org/wiki/Dinorwig_Power_Station
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What is meant by salient and non-salient pole machine?
for salient type motor Lq>Ld, and non-salient type motor Lq=Ld; Lq and Ld are q-d axis inductanceAnswer'Salient' means to 'stick out', so a 'salient pole' machine is one whose rotor windings are fitted to pole pieces that stick out from the rotor shaft. A 'non-salient pole' machine is one in which the windings are placed in slots machined along the length of the rotor.Salient pole machines run slower and have more poles than slotted-rotor machines, and are typically used in alternators run by water turbines; slotted-rotor machines are typically used in alternators run by high-speed steam/gas turbines.
What are the advantages of salient pole?
• They allow better ventilation • The pole faces are so shaped that the radial air gap length increases from the pole center to the pole tips so that the flux distribution in the air-gap is sinusoidal in shape which will help the machine to generate sinusoidal emf • Due to the variable reluctance the machine develops additional reluctance power which is independent of excitation
What is the difference between generator over excitation versus under excitation when attached to the grid?
Over Excitation is a condition when the Excitation System is providing too much field current and as a result, the rotor of the generator will over heat. The Excitation System is equipped with an Over Excitation Limiter. This limiter acts to reduce the Excitation Current if this condition exists Underexcitation is a condition when the generator is not getting enough Excitation Current. If the generator does not get enough Excitation Current, it can be un-synchronized with the grid. We call this slipping a pole. If this occurs, the generator can be severely damaged. Kelly Thompson Engineering Lead Siemens Energy Alpharetta GA
What RPM and size generator would power an average us home?
A typical 100 amp service is comparable to a 25 KVA generator. That said, very few homes pull that much load. Most utilities size their distribution systems for a 5 KVA load per home, assuming that not all homes would pull full load at the same time. RPM is a function of the number of poles in the generator. To get 60 Hz power with a two pole generator, you need 1,800 RPM.
Can you use motor turn turbine in the production of power?
One could but there would be additional losses. Older frequency changers use a synchronous motor to turn a synchronous generator with a different number of poles to change frequency. I have seen these used in woodworking. An example is to use a two pole motor to turn a four pole generator to generate power at twice the line frequency. A More modern solution would be to use semiconductors which would also allow the output frequency to be varied.
What is the priniciple of salient pole alternator?
The term, 'salient', simply means to 'stick out'. So a salient pole machine has field poles that stick out from the rotor. The principle of operation is the same as for any other generator.
How many poles as salient pole rotor?
'Salient' means 'sticking out', so if the pole sticks up from the rotor shaft, then it is a salient pole machine.
What is the salient pole type field structure andnon silent pole type field structure in an alternator?
There are two types of rotors - salient pole and round rotor. Salient pole rotors have protuding poles that the coils are wrapped around, and are typically used when many poles are needed. The main electomagnetic difference is a salient pole machine naturally has a varying air gap between the rotor and the stator, due to the pole saliency.
What is salient and non salient pole alternator?
In salient pole alternator Xar is unequal in D-axis and Q-axis, due to non uniform air gap where as in non-salient pole Xar is equal in every axis due to uniform airgap between stator and rotor. Xar is armature reaction reactance.
What is non salient pole?
poles are not projected outwards
What is salient pole construction details?
'Salient' means to 'stick out', so salient poles stick out from the machine's shaft, as opposed to shafts which are slotted to contain its windings.
COMPARE SALIENT POLE AND HNDRICAL ROTOR MACHINES?
sailant
What are the Types of alternators based on rotor construction?
Types of rotor-Salient pole or projected typeNon salient pole or cylindrical typeSalient type is used for low speed or medium speed motor where non salient type is used for high speed rotor.
How many different types of alternator are there for a 1998 fore contour?
type 1: single phase tree phase poly phase type 2: rotating armature rotating field type 3: salient pole machine non salient pole machine type 1: single phase tree phase poly phase type 2: rotating armature rotating field type 3: salient pole machine non salient pole machine
What is meant by salient and non-salient pole machine?
for salient type motor Lq>Ld, and non-salient type motor Lq=Ld; Lq and Ld are q-d axis inductanceAnswer'Salient' means to 'stick out', so a 'salient pole' machine is one whose rotor windings are fitted to pole pieces that stick out from the rotor shaft. A 'non-salient pole' machine is one in which the windings are placed in slots machined along the length of the rotor.Salient pole machines run slower and have more poles than slotted-rotor machines, and are typically used in alternators run by water turbines; slotted-rotor machines are typically used in alternators run by high-speed steam/gas turbines.
What is the difference between salient pole and non salient pole machines?
Rotors used in Synchronous alternators can be classified into 1)Salient and 2)Non-Salient Pole Rotors. Salient pole rotors are used in application with speeds from 100 to 1500rpm. They are alternative known as "projected pole" type of rotors. The poles mounted on the rotor are made of laminations made of steel. The poles are connected to the rotor shaft by means of dovetail joints. Each pole has a pole shoe around which the winding is wound. The salient pole rotor is generally used in applications where the prime mover is a hydel turbine or a combustion engine which have low or medium speeds. Salient pole rotors usually contain damper windings to prevent rotor oscillations during operation. Non-salient pole rotors are generally used in application which operate at higher speeds, 1500rpm and above. The prime movers in these applications are generally gas or steam turbines. These are sometimes known as "drum rotors". The rotor is a cylinder made of solid forged steel. The slots on which the windings are fixed are milled on the rotor. The number of poles is usually 2 or 4 in number. Since these rotors are cylindrical, the windage loss is reduced. The noise produced is also less. These rotors have higher axial length. These rotors do not need damper windings.
What is a magnet pole in a simple generator?
Induce current in the generator windings.
