Cancel secondary flux (reaction) from transformer

Click For Summary

Discussion Overview

The discussion revolves around the concept of canceling secondary flux in transformers, specifically exploring configurations of transformers with different phase angles to achieve this cancellation. Participants are examining the implications of their proposed setups on the magnetic fields and currents in the transformers.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes using two transformers with primary voltages fixed at 110 volts, one at 0° phase and the other at 180° phase, to cancel the flux from their secondaries by placing additional secondaries with +180° phase in front of them.
  • Another participant suggests that to cancel the magnetic field, the windings should be arranged such that the enclosed current is zero in an amperian loop.
  • The original poster expresses confusion about the implications of their setup, particularly regarding the need for current in the primary coils and the effects of secondary flux on primary current, questioning the feasibility of their idea to suppress the increase of primary current.
  • One participant reiterates the idea of using a wire in the opposite direction to reduce the magnetic field in a specific region, while also suggesting the use of an external source for control.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the effectiveness or feasibility of the proposed methods for canceling secondary flux, with differing interpretations and suggestions regarding the arrangement of transformers and the behavior of magnetic fields.

Contextual Notes

There are unresolved assumptions regarding the geometric configurations of the transformers and the specific conditions under which the proposed cancellation of flux would occur. The discussion also reflects a lack of clarity on the underlying principles of magnetic fields and current interactions in the proposed setups.

Who May Find This Useful

Individuals interested in transformer design, magnetic field interactions, and energy systems may find the exploration of these concepts relevant.

lba
Messages
43
Reaction score
0
hi,

The drawing show 2 transformers T1 and T2. Each primary of transformer is at fixed voltage (110 volt for example), but one transformer is with 0° phase and other with 180° phase. The secondary of each transformer has the same charge and the same current. The idea is to cancel the flux from secondaries. We put in front of each part of secondary an other secondary but with +180° phase like this all secondary is in front of reverse flux. When one give N/S, it is in front of S/N. Like that all flux from each turn of coil is cancel. Sure, this need to put a lot of transformer for cancel all the flux and use a particular geometric shape. But if we think with 5 transformers: 4 transformers for cancel the flux of one (4 sides), is the flux is cancel for the central transformer ?

The iron of each transfomer is always separated by other transformer.

What's wrong with this idea ?

Thanks
LBA
 

Attachments

  • 5t.JPG
    5t.JPG
    26.6 KB · Views: 536
Last edited:
Physics news on Phys.org
To cancel the B field just wrap the windings so that the current enclosed is zero in your amerpian loop.
 
To cancel the B field just wrap the windings so that the current enclosed is zero in your amerpian loop.

thanks for your message ;)
I don't understand all... I want a current in the primary coil in each transformer, because I want current in the secondary. When I take current from secondary, the flux from secondary decrease flux from the primary and this increase the current in primary because the voltage is constant. I would like to suppress this increase of current in primary, so I try to cancel flux from secondary and like that this system can create energy (I know it's not possible ;). I don't find what's wrong with this idea ?

Have a good day
LBA
 
All I am saying is that if you want to cut down the B field in a certain region, Just have a wire going in the opposite direction to cut down down the current enclosed.
I am still not sure exactly what your trying to do, but you could also use an external source to do this. To get it where you want it.
 

Similar threads

Undergrad Mutual inductance in a transformer
  • · Replies 16 ·
Replies
16
Views
5K
Undergrad Short Circuiting the Secondary of a Transformer/Self Impedence
  • · Replies 17 ·
Replies
17
Views
4K
High School Are silicon iron sheets really necessary for a commercial transformer?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Transformer equation: Using Faraday's law "the wrong way"?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Confusion about transformer and flux
  • · Replies 26 ·
Replies
26
Views
9K
Undergrad Transformers & Phase Difference
  • · Replies 2 ·
Replies
2
Views
7K
High School Phase difference in a transformer
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Magnetic Flux inside a Transformer
  • · Replies 5 ·
Replies
5
Views
5K
High School How a Secondary Resistor affects the Transformer Primary Side?
  • · Replies 6 ·
Replies
6
Views
19K
Maximum power from a transformer
  • · Replies 8 ·
Replies
8
Views
3K