Questions tagged [stator]
For questions about stators, the stationary part of the rotary system of electric motors and generators. Use in conjunction with the "motor" and "generator" tags, as applicable.
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Stator wiring in Robin RGD351 not matching manual
I am currently trying to figure out why a Robin RGD351 single phase, self exciting has stopped producing power. I have gotten the manual (https://www.manualslib.com/manual/988411/Robin-Rgd351.html) ...
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Is this the correct setting of short coil pitch configuration?
So I tried to visualize 12 slots 2 poles induction motor and I used a coil pitch of 150 degrees as is the convention. Each pole will use an interval of 12/2=6 slots. 6 slots is a complete electrical ...
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How to calculate the wire gauge windings when creating my-own PM BLDC Motor, 12N14P, Outrunner motor?
I am using BLDC Stator and BLDC controller at 48V @ 27A.
3
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3
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425
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Making a 9-coil, 3-phase brushless PCB stator
I'm designing a 9-coil, 3-phase PCB stator, and I'm stuck on how to connect the coils together.
They need to be connected in a Wye configuration, but I'm not sure if each phase is supposed to be ...
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2
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How to bond the laminated steel sheets to form the stack before cutting
I have 0.35mm laminated steel sheets, and I want to make it bond together to form the stack. What is the method that I can use?
This stack will be used to be the stator for bearingless motor in temple ...
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1
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57
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Confusion of measuring the stator voltage of induction motor [closed]
I'm new to inverters and the only way I know how to measure the stator voltage of induction motor is to connect the multimeter to terminal of junction box. So could anybody please elaborate more about ...
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698
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Why is the stator coil wrapped with layers of metal disks instead of a whole metal block?
I don't know if this question belongs to this forum, but I just saw this video and found out that the stator coil's armor (? - or something, I don't know the word) is made of layers of metal disks, ...
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Can I use an AC motor rotor as an outrunner BLDC motor's stator?
I want make outrunner BLDC motor by myself. I am looking for an easy and cheap way to get the inner stator part of it if available.
I see this AC motor armature and it uses almost same shape and ...
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1
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159
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What's the safest way to electronically brake a PMA wind generator to prevent overspeed damage to stator?
I have a couple 24 volt 400W wind turbines on order for my 24 volt off-grid system I already have set up with 2000 watts of solar, inverter and generator.
The included charge controller schematic ...
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3
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What is a good circuit model for an AC generator?
A very simple electrical AC generator can be made by spinning magnets around a fixed stator coil. The changing magnetic field induces current in the stator winding.
It would seem that at a fixed ...
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Electricity generation with diamagnetism
Will a strong diamagnetic material like bismuth allow for electricity generation if the copper coils are on the other side of the bismuth plate from the magnet? Imagine the following three layer ...
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BLDC motor won't start after reversing the stator axial direction
I'm adapting a 60V BLDC e-scooter hub motor (see image below) to a custom made EV. In this specific motor, as it's designed for scooters, the wiring and the brake disc mounting are in opposite sides, ...
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What is the net magnetic flux density in the center of a four-pole stator and other multiple-pole stator?
According to this ppt,
if the currents are given as
$$\left\{
\begin{aligned}
i_{aa'}=I_M\sin{(\omega t)} \\
i_{bb'}=I_M\sin{(\omega t-120°)} \\
i_{cc'}=I_M\sin{(\omega t-240°)} \\
\end{aligned}
\...
- 1
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397
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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 ...
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How much high is the amplitude of stator-MMF of 3-phase 2-spp integral slot winding type machine as compared to 3-phase1-spp machine of same type?
Details:
No. of POLES=2; i.e 1-pole pair
SPP= slots per pole per phase
In my case,
amplitude of MMF of 3-phase 1-spp machine= 0.75;
Then what should be the amplitude of MMF for 2-spp machine ?
Is it ...
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vote
1
answer
505
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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 ...
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3
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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 3000 W (I originally had a 1200 W controller installed).
The motor is rated for 500 W nominal and 800 W peak, ...
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2
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685
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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 (...
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Is a stator another word for a soft iron core? [closed]
Pretty much a yes or no question. Would be greatly appreciated thankyou
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133
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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 ...
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1
answer
679
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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
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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 ...
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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 ...
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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 ...
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1
answer
151
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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?
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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 ...
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2
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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