Questions tagged [stator]

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39 views

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 ...
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3answers
87 views

What is limiting my BLDC Motor power Output?

I am using a BLDC 3 phase hub motor and recently installed a motor controller rated for 3000watt (I originally had a 1200Watt controller installed). The motor is rated for 500w nominal 800w peak but ...
2
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2answers
262 views

(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 (...
-2
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1answer
96 views

Is a stator another word for a soft iron core? [closed]

Pretty much a yes or no question. Would be greatly appreciated thankyou
0
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2answers
72 views

AC motor design

Is it possible to have an AC motor with only a partial stator, one that does not fully encompass the rotor? Refer to the picture to understand what I mean. This would be needed to drive a spherical ...
2
votes
1answer
403 views

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 ...
0
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1answer
97 views

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 ...
0
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1answer
597 views

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 ...
0
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1answer
381 views

Is my rotor/stator configuration correct?

Question 1) I am trying to make a miniature alternating current (ac) generator from elementary first principles. Before I waste a lot of time (and copper wire), I wanted to check if the ...
-1
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1answer
88 views

Does a BLDC stator benefit of being i one piece? [closed]

Does a stator benefit of being in one piece, as different phases may form a horse-shoe(?), or is the layout puerly of manufacturing efficency?
0
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1answer
4k views

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 ...
7
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2answers
1k views

Designing/Predicting Output from Permanent Magnet Motorcycle Stators

I'm hoping you can help me. I've long been into motorcycles, and have restored and customized many different bikes. While building custom motorcycles, I often add electrical accessories, and use high ...
0
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1answer
794 views

Is there a mandatory pattern for stator windings in 3 phase induction motors?

Imagine simple 2 pole 3 phase induction motor, is there a mandatory pattern for the stator windings to creat a rotating magnetic field? Why must the angle between the coils be 120 mechanical degrees ...
0
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2answers
2k views

Does a longer stator equal more torque in a BLDC setup?

I'm interested in making something like this: http://www.vivax-assist.com/en/produkte/vivax-assist-4-0/vivax-assist_4-0.php Because it looks awesome, but for the price i could buy a motorcycle and ...
0
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1answer
4k views

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 ...
1
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2answers
1k views

Stator Current & RPM - Motorcycles

Short and simple - I want to understand the relationship between RPM (specifically on a motorcycle crankshaft) and AC stator current. In most motorcycles there is a magnetic field generated at the ...
2
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3answers
2k views

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 ...
0
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2answers
232 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 ...