A motor design to defy Lenz' law?

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Discussion Overview

The discussion revolves around a proposed motor design that aims to circumvent Lenz's law through the interaction of two electrically isolated rotors. Participants explore the implications of this design on the behavior of magnetic fields and induced currents, particularly in relation to generator operation.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant describes a motor design involving two rotors that are mechanically coupled but electrically isolated, questioning whether the magnetic fields could cancel each other out and affect Lenz's law.
  • Another participant argues that the motor-generator pair does not transform voltage and emphasizes that cutting magnetic flux with a conductor connected to a load will always result in an opposing force, suggesting that the proposed design is not feasible.
  • A different participant reiterates the challenge posed by Lenz's law, questioning if the opposing magnetic field could be canceled by the adjacent rotor, thereby allowing the generator rotor to move freely.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of the proposed motor design, with some questioning its validity based on established principles of electromagnetism, while others explore the theoretical implications of the design without reaching consensus.

Contextual Notes

The discussion includes assumptions about the behavior of magnetic fields and induced currents, as well as the implications of rotor design. There are unresolved questions regarding the specifics of the proposed motor's operation and its adherence to established scientific principles.

Who May Find This Useful

Individuals interested in electromagnetism, motor design, and the implications of Lenz's law may find this discussion relevant.

Narayanan KR
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motor design.png

1. The two rotors (purple, green) are electricaly isolated but mechanically fit to rotate along same axis
2. The motor action on the left side rotor will move the armature set, this will produce currents in right side rotor that will pass via a variable load.
3. do you see the magnetic fields of both rotors cancelling each other especially when the no. of turns are large
4. will this cancel lenz effect on generator side or both sides?
 
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You have a motor-generator pair and it does not even transform the voltage. Any time you cut magnetic flux with a conductor connected to a load such as the right side of your drawing you will have an opposing force on said conductor. In other words, it gets harder to push the conductor through. A heads up: Discussion of things of this nature are prohibited on PF. Thought I would explain why your scheme won't work though.
 
it is difficult to move rotor of generator because the magnetic field of induced current is opposing the rotation (lenz law) , but if that magnetic field is canceled by another adjecent rotor, then the question is will the generator rotor move freely in the field (the diagram shows only half a turn in each rotor, so please imagine more turns) .
 
Thread closed for Moderation...
 
Narayanan KR said:
it is difficult to move rotor of generator because the magnetic field of induced current is opposing the rotation (lenz law) , but if that magnetic field is canceled by another adjecent rotor, then the question is will the generator rotor move freely in the field (the diagram shows only half a turn in each rotor, so please imagine more turns) .
Your thread will remain closed. We do not allow challenges to mainstream science here. We do allow sincere questions about basic E&M, with the intent being understanding E&M better. Please PM me if you want to continue this discussion. It is too big of a potential waste of time to leave as a general discussion item. Thank you.
 

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