Calculation of round slots on the rotor for a squirrel cage asynchronous motor

  • Thread starter Thread starter SenyaUw
  • Start date Start date
  • Tags Tags
    Cage Rotor
SenyaUw
Messages
1
Reaction score
0
TL;DR Summary
Good afternoon, I started calculating the asynchronous motor with 2P=2 Zs=24, Zr=28. I want to use round-shaped closed-type slots for copper bars. The question is whether there is any method for calculating such round grooves of a closed type, before that I used rectangular or trapezoidal all the time. There are also some recommendations for choosing the height to which the rods should be sunk. Rotation speed 50000, rotor diameter 55 mm.Thank you in advance
1723624323255.png
 
Engineering news on Phys.org
Rounds bars are not well suited for higher torque applications. Burying them can decrease torque pulsations and noise, while sacrificing leakage induction and breakdown torque.

You can find a somewhat more detailed treatment of them in Boldea, Nasar - The induction machine handbook.
 
I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
Thread 'Electromagnet magnetic field issue'
Hi Guys We are a bunch a mechanical engineers trying to build a simple electromagnet. Our design is based on a very similar magnet. However, our version is about 10 times less magnetic and we are wondering why. Our coil has exactly same length, same number of layers and turns. What is possibly wrong? PIN and bracket are made of iron and are in electrical contact, exactly like the reference design. Any help will be appreciated. Thanks. edit: even same wire diameter and coil was wounded by a...
Thread 'Beauty of old electrical and measuring things, etc.'
Even as a kid, I saw beauty in old devices. That made me want to understand how they worked. I had lots of old things that I keep and now reviving. Old things need to work to see the beauty. Here's what I've done so far. Two views of the gadgets shelves and my small work space: Here's a close up look at the meters, gauges and other measuring things: This is what I think of as surface-mount electrical components and wiring. The components are very old and shows how...
Back
Top