All Questions
Tagged with rotor electric-machine
8 questions
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Do eddy currents in a rotor core of an induction motor create torque proportional to the coil current of a squirrel cage?
In a rotor of an induction motor, the core plates and wire coil conductors have non-zero thicknesses. Therefore, eddy currents non-zero too. And they approximately proportional to the coil current of ...
- 165
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Rotor types in Synchronous Reluctance Motor
I am doing research on Syncrhonous Reluctance Motor (SynRM) and the rotor used in it. I am a bit confused in their rotor types. Now according to Google, the rotor types do consists Salient Poles Rotor ...
1
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1
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894
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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
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EMF - DC permanent magnet motor
I am using FEMM to design a DC permanent magnet rotor.
I am trying to calculate the EMF that is induced to the rotor. Since each coil has a different position, the induced EMF will be different.
In ...
- 153
7
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4
answers
5k
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Why is slip necessary in an Induction motor?
Why should the rotor of a 3-phase induction motor not rotate at synchronous speed?
- 339
6
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2
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8k
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What is meant by front and back pitch of an armature winding?
I searched the internet for these definitions and found a common definition in all websites:
Back Pitch-
A coil advances on the back of the armature. This advancement is measured in terms of ...
- 181
5
votes
2
answers
3k
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How do I modify a DC electric generator to get the same power at a lower speed?
This will be a theoretical question.
Suppose that I have a DC generator, and I'm getting 300VA power from it when it rotates at 2000rpm.
I want to make it run at a lower speed of about 700rpm, and I ...
- 14.2k
3
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2
answers
4k
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Which parts of this rotor can be made out of plastic?
I'm asked to redesign a rotor, by making as much parts of it as possible out of plastic. The issue is its weight, we want to make it as light as possible. Especially the shaft & axis of it is the ...
- 14.2k