All Questions
10 questions
1
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550
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How do I quantify the effect of stack lamination on a stator and on a rotor of an induction motor?
Image from here:
I would like to design (or to calculate the existing of) an induction motor, either 3 phases or single phase. I understand that both stator and the rotor made from a stacked-laminated ...
- 125
1
vote
1
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895
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Induction motor starting torque and pull out torque
Recently I was doing some work on the induction motor where I found some general theory on starting speed torque curve of the induction motor. Where the theory is the starting torque will be 1.5x of ...
- 79
4
votes
2
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789
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(edit) Brushless Motor - Why does the stator burn up if the rotor doesn't rotate?
If I was to apply power to a 3 phase stator, which in turn creates a magnetic field that's projected onto the rotor (with magnets), and (in a friction-less world) would cause the rotor to rotate (...
- 525
2
votes
1
answer
893
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Working of a Doubly-Fed Induction generator (DFIG) in wind turbines
I am unable to understand how a Doubly-Fed Induction generator works (in Wind Energy conversion system)? I do not understand how the reactive power fed into the stator interacts with the rotor so as ...
user172541
0
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1
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342
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Why the rotor core losses are very tiny compared to the stator core losses in an induction motor?
Book says rotor mostly runs at speed near to synchronous due to which the relative velocity between rotor and stator magnetic field is very less. Correspondingly making rotor core losses tiny and ...
- 167
0
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1
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1k
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Can I coil directly onto the iron cores of a stator for a basic generator?
I am constructing a very basic miniature generator (25mm diameter), the rotor has 8 bar magnets, and there will be the same number of coils, wired appropriately, in the stator.
.
I understand that ...
1
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1
answer
6k
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Why would a rotor get stuck on the side of the stator when the induction motor is turned on, and how to fix it? [closed]
My big fan stopped working, so I decided to dismantle it and check what's wrong with it. The problem lies in a faulty induction motor.
I opened it and found out that I can easily turn the rotor ...
- 113
0
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1
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5k
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why the stator frame of a 3-phase generator is made up of cast iron?
I don't have a good knowledge of engineering materials, so please answer the following questions with reasons.
Why is the stator frame of a 3-phase generator made up of cast iron?
Why is the ...
- 181
2
votes
3
answers
3k
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Meaning of “with respect to rotor and stator”
In the following example, when it says “with respect to stator” and “with respect to rotor”, did they mean the rotor part of the synchronous generator in both cases?
Example: The excitation field in ...
- 21
0
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2
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251
views
Circuit of a Rotor on an Induction Motor
Here is an equivalent circuit of a rotor on an Induction motor:
Can someone explain How do we arrive at this circuit?
The rotor seems to be only a disc(made of a metal) with conductors embedded near ...
- 2,406