How do you apply the wye delta transformation in complex electrical circuits?

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Discussion Overview

The discussion focuses on the application of the wye-delta transformation in complex electrical circuits, particularly exploring special cases where this transformation may not be applicable. Participants are examining theoretical scenarios and providing examples related to circuit analysis.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation

Main Points Raised

  • One participant asks about special cases in electrical circuits where the wye-delta transformation cannot be applied and requests graphical representations.
  • Another participant suggests that a cube with resistors on all sides serves as an example of such a case.
  • A subsequent post seeks additional examples beyond the cube scenario.
  • It is proposed that while obtaining the resistance between opposite corners of a cube with equal resistances is feasible, determining the general case for a cube may be more complex.
  • Other examples mentioned include messy nets of resistors, as well as the presence of current and voltage sources complicating the application of the transformation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on specific cases where the wye-delta transformation cannot be applied, and multiple competing views on examples remain present throughout the discussion.

Contextual Notes

Limitations include the lack of detailed definitions for "messy nets" and the general cube scenario, as well as unresolved mathematical steps in determining resistances in complex configurations.

Domenico94
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Homework Statement


What can be special cases, in the study of electrical circuits, in which one can not apply wye delta transformation? Can someone graph them in some way?

Homework Equations

The Attempt at a Solution

 
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The cube with resistors on all sides is an example.
 
Alright..other cases instead?
 
You can probably figure out how to obtain the resistance between opposite corners when all edges of the cube have equal resistance, but how would you do the general cube?

Other examples are messy nets of resistors, current sources, and voltage sources.
 

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