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Problem With Inducing Current In A Moving Conductor Place In Constant Magnetic Field

Posted Sep 20, 2019, 2:22 a.m. EDT 5 Replies

Nalladhimmu Pavan Kumar Reddy
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I have placed a moving aluminium conductor in a constant magentic field produced by a coil excied with constant voltage. I am unable to get any induced currents in the conductor. I am using magnetic fields physics and continuity is employed. displacement current density are ignored as i am using magnetic fields physics. And air medium is provided.

5 Replies Last Post Oct 3, 2019, 12:37 a.m. EDT
Robert Koslover Certified Consultant
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Posted: 5 years ago Sep 21, 2019, 11:01 p.m. EDT

There is probably an error in your model. I encourage you to post the model to the forum so that others can look at it and help you.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
There is probably an error in your model. I encourage you to post the model to the forum so that others can look at it and help you.
S K Wahi
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Posted: 5 years ago Sep 22, 2019, 10:03 a.m. EDT

You can use this link: https://www.comsol.co.in/model/voltage-induced-in-a-coil-by-a-moving-magnet-14163. May be it is useful for you.

You can use this link: https://www.comsol.co.in/model/voltage-induced-in-a-coil-by-a-moving-magnet-14163. May be it is useful for you.
Nalladhimmu Pavan Kumar Reddy
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Posted: 5 years ago Sep 22, 2019, 11:31 p.m. EDT
Updated: 5 years ago Sep 23, 2019, 12:07 a.m. EDT

There is probably an error in your model. I encourage you to post the model to the forum so that others can look at it and help you.

Thank you for the reply This is my comsol file. I have set a rotating motion to the aluminum blades and the coil is excited to produce a constant magnetic field.

>There is probably an error in your model. I encourage you to post the model to the forum so that others can look at it and help you. Thank you for the reply This is my comsol file. I have set a rotating motion to the aluminum blades and the coil is excited to produce a constant magnetic field.

Attachments:

Edgar J. Kaiser Certified Consultant
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Posted: 5 years ago Sep 28, 2019, 4:28 a.m. EDT
Updated: 5 years ago Sep 28, 2019, 4:28 a.m. EDT

Hi,

this is better set up in a Rotating Machinery Magnetic (rmm) approach. Refer to the application library model in AC/DC Module > Motors and Actuators > generator 2D.

Cheers Edgar

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hi, this is better set up in a Rotating Machinery Magnetic (rmm) approach. Refer to the application library model in AC/DC Module > Motors and Actuators > generator 2D. Cheers Edgar
Nalladhimmu Pavan Kumar Reddy
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Posted: 5 years ago Oct 3, 2019, 12:37 a.m. EDT

I have now used rotating machinery, Everything looks fine but my coil output current for simulatio is different than the required output as in attached image below.

I have now used rotating machinery, Everything looks fine but my coil output current for simulatio is different than the required output as in attached image below.

Attachments:

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