Mell What is salient and non-salient pole?
Non-Salient pole generators will have smaller diameter and longer axial length. They are used for High speed operation (typically speed will be 1500 and 3000 rpm) Better in dynamic balancing because of absence of salient poles.
What is a salient pole synchronous motor?
Synchronous Motors Laminated Salient Pole Rotors. Power Conversion’s Laminated Salient Poles Motors have laminated poles fitted with strip or wire wound field coils and supplied with a shock absorbing winding on the outer pole face.
How do you calculate synchronous speed?
The synchronous speed of an AC motor is determined by the frequency of the source and the number of poles. The RPM is calculated by multiplying the frequency times 60 and dividing by the number of pairs of poles. This was explained in Chapter 6.
What are the advantages of salient pole?
Advantages of salient-pole type construction are : 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.
What’s the difference between non-salient pole rotors and salient poles?
Salient pole type or projected pole type rotor ( low speed, more number of poles, kaplan turbines ) Non-salient type or smooth cylindrical type rotor ( high speed, 2 or 4 poles, pelton wheel ) The salient pole type construction of rotor is shown below is used in low and medium speed ( 125 to 500 rpm ) electrical machines.
What is the difference between a salient and non-salient synchronous machine?
Originally Answered: What is the difference between salient and non salient synchronous machine? The main difference between salient pole and non salient pole synchronous machine is the physical appearance of the rotor
When to use a non salient pole synchronous generator?
Salient Pole Synchronous Generators are employed in Hydro-Power plants. Non-Salient pole generators will have smaller diameter and longer axial length They are used for High speed operation (typically speed will be 1500 and 3000 rpm) Better in dynamic balancing because of absence of salient poles.
What kind of poles are used for rotors?
The projected poles are made up from laminations of steel. The rotor winding is provided on these poles and it is supported by pole shoes. Salient pole rotors have large diameter and shorter axial length. They are generally used in lower speed electrical machines, say 100 RPM to 1500 RPM.