For the magnetic circuit of Figure 5 and magnetization curves of Figure 6. i)State the rule used to assign the correct direction of magnetic flux. Therefore, re-draw the magnetic circuit indicating the correct direction of flux. ii) Draw the electrical analogy for the magnetic circuit. iii) Find the value of I required to develop a magnetic flux of 4 × 10-4Wb iv) Determine U and Ur for the magnetic material under these conditions.
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
For the magnetic circuit of Figure 5 and magnetization curves of Figure 6.
i)State the rule used to assign the correct direction of magnetic flux. Therefore, re-draw the magnetic circuit indicating the correct direction of flux.
ii) Draw the electrical analogy for the magnetic circuit.
iii) Find the value of I required to develop a magnetic flux of 4 × 10-4Wb
iv) Determine U and Ur for the magnetic material under these conditions.
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