Learning Forum

[abankusomari]

Good day Sir. please i am modeling a magnetic gear  of the below parameters to plot the dynamic torque plot of the inner and outer rotor but my plot is far from what i am suppose to obtain.please can some one help me fish out my mistakes.

The gear has 4 inner magnet pairs, 22 outer magnet pairs with different polarity and 26 steel segments .The thickness of the Permanent magnet is 6 mm.The air gap between the two rotors and the steel segments is 1 mm. The magnet material is NdFeb35 and the steel segment material is low carbon steel  AISI1008 and the rotor yoke is ferromagnetic material.The inner rotor .The angular speeds of both inner and outer rotor is 150 rpm and 27.3 rpm.

my model is below

 

 

The position range for the dynamic torque is from 0 to 45 degrees. when i plotted  dynamic torque of the inner and outer rotor ,my plot is below.

the actual plot was suppose to look like the figure below

[GLUO]

Hello,

The outter circle magnets pole seems like opposite from the first picture. Please double check if the poles are correctly defined.

GL

 

[abankusomari]

Okay sir .please i will check that and respond swiftly.Thank you

[abankusomari]

Sir please i have double check and model it as the first picture but i am still getting the same results

 

 

 

[GLUO]

Is the coercivity defined at radial direction correctly? Are you more worried about the phase or the amplitude?

[abankusomari]

I am worried about the amplitude sir

[abankusomari]

please can you give me a snapshot on how to identify the coercivity in the ansys maxwell so i define it?

[abankusomari]

please the above was the magnet properties .i was finding it difficult to identify them in ansys maxwell to input

[abankusomari]

for the coercivity in the radial direction i assign 1 for north pole and -1 for the south pole

[GLUO]

Your picture shows it has an amplitude of 890k. Is the material coord cylindrical? R component should be -1 and 1. You also need to have the same correct permeability for all material in this model to get correct torque. Please use the support button at the left side of this page to submit a ticket for further help from our dedicated engineers.

GL

[abankusomari]

Thanks for your help Sir