Induced secondary coil flux field?

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Discussion Overview

The discussion revolves around the interaction between a primary coil and a secondary coil in the presence of a permanent magnet (PM) field. Participants explore the nature of the induced flux field in the secondary coil, the relationship between the primary and secondary coils, and the effects of the PM's strength and motion on the induced currents and fields.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that the secondary flux field induced in the secondary coil will not equal the strength of the PM's field but will be related to the current generated in the primary coil.
  • Others argue that while the currents in both coils may be equal (assuming equal turns), the overall power of the PM is not fully transferred to the secondary coil.
  • A later reply questions whether the strength of the PM array affects the induced magnetic field of the primary coil and whether the changing flux through the wire influences the primary coil's flux field.
  • One participant mentions that connecting an electrical load to the secondary winding will impact the system's power dynamics, suggesting a relationship between load and induced currents.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between the PM's field strength and the induced fields in the coils. There is no consensus on the exact nature of these interactions, and the discussion remains unresolved.

Contextual Notes

Participants discuss the specifics of the PM configuration, including its type and rotational speed, which may influence the induced effects. The assumptions regarding coil construction and connections are also highlighted but remain unverified.

Who May Find This Useful

This discussion may be of interest to those studying electromagnetic induction, coil design, and the effects of magnetic fields in electrical systems.

Robin07
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Using a PMs' field and inducing a primary coil which is coupled with an independent coil of equal configuration to the primary. Would this secondary flux field be opposite and of equal EMForce? If so, Equal to the PMs' strength or the primarys' EMForce?

Thanks Robin07
 
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Robin07 said:
Using a PMs' field and inducing a primary coil which is coupled with an independent coil of equal configuration to the primary. Would this secondary flux field be opposite and of equal EMForce? If so, Equal to the PMs' strength or the primarys' EMForce?

Thanks Robin07

Took me a bit to figure out that PM is permanent magnet. Got it now. No, waving a magnet in front of a coil that is connected to another separate coil will not generate a field that is equal to the permanent magnet's field. The changing flux in the first coil will generate a voltage in that coil, which generates a current in the winding wire, which flows through the second coil, which generates the secondary flux. The two coil fluxes are equal, since the currents are equal (assuming equal turns), but that's not equal to the full power of the magnet.
 
berkeman said:
Took me a bit to figure out that PM is permanent magnet. Got it now. No, waving a magnet in front of a coil that is connected to another separate coil will not generate a field that is equal to the permanent magnet's field. The changing flux in the first coil will generate a voltage in that coil, which generates a current in the winding wire, which flows through the second coil, which generates the secondary flux. The two coil fluxes are equal, since the currents are equal (assuming equal turns), but that's not equal to the full power of the magnet.

Sorry about the PM thing. Perhaps I should clarify a little. The PM is a cylindercal/ring Halback array going at 3400rpm - 6400rpm as well as crossing the primary coils' path where the coil is at its greatest diameter(voltage unknown at this time) bisecting it at a right angle. The secondary coil is not connected to the primary, it is independent but is located within the flux field of the primary. The secondary coil should realize a current...Yes? And yes, let's agree that the coils are of equal build.
Does the strength in the PM array play a role in the strength of the induced primary coils' magnetic field. And does the amount of changing flux that is going through the wire strengthen and weaken the primary coil flux field?

Thanks Robin07
 
If we connect an electrical active load to secondary winding, the mechanical primary part (as you have named "PM") fronts the resistance momentum. If not, it just be supplied the power loss of system.


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