apply motion for double rotor

- January 14, 2021 at 10:39 pm
  
  ssaeidab
  Subscriber
  
  Hi,
  I want to simulate in maxwell_2D a motor with the double rotor, inner rotor, and outer rotor. The rotors are united and I defined the band for inner rotor and which is a circle and I defined a band for the outer rotor and it is a disk. I choose 3000 rpm for both bands but it does not work and there is e error. when I separate two rotors it works bit I got two oggin torque.
  could you please help me with this?
  Thanks
- January 15, 2021 at 2:35 pm
  
  Navya C
  Ansys Employee
  
  Hi @Saeids
  From version 2020R1 onwards you can have two separate rotors - define two bands and have two motion setups.
  Please provide more screenshots related to your model and band setup for our better understanding.
  Any 3D images that explain your motor construction will help better interpret the model.
  
  Regards
  Navya
- January 19, 2021 at 6:48 pm
  
  ssaeidab
  Subscriber
  
  This is my motor model. It has two roto, inner rotor, and outer rotor. These two rotors are connected to each other in real. and they rotate at the same speed.
  So, I unite them, and then I consider two-band for them as follows. I unite the bands and consider them separate but I got an error. So, I decided to separate the rotors and considered two bands for them separately, I got results. But I got two Torque separately for the inner rotor and outer rotor. In reality, It should be one torque. Could you please help me with that.
  Also, How can I sum these two torque waveforms?
  
  Thanks.
- January 20, 2021 at 5:26 pm
  
  ssaeidab
  Subscriber
  
  Could you please help me with that?
  Thanks
- January 20, 2021 at 11:58 pm
  
  ssaeidab
  Subscriber
  
  Hi Also, these are the figures from the original paper that presented this motor. Based on the figure for this I should have one torque because I define rotors separately I get two torque.
- January 21, 2021 at 5:12 am
  
  Navya C
  Ansys Employee
  
  Hi @Saeids
  The way you got the result is correct (Not sure about the values though).
  You will get two torques. you just need to add them and plot as shown below to get the resultant torque.
  Write the expression as shown below after you select Resulsts>Rectangualr plot
  
  Regards
  Navya
- January 21, 2021 at 8:33 pm
  
  ssaeidab
  Subscriber
  
  Thank you so much for your help.

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