Mesh analysis with current sources

Monday, 20 August 2018

12:34 PM

Current sources generate or dissipate power at a specified current with the required voltage.
The current is known, however the voltage is not, and Ohm's law does not apply

 

Case 1: Current source exists only in one mesh
Set the ,mesh current to the current of the source


Case 2: Current source is between two meshes

The two meshes form a supermesh, by excluding the branch with the current source.

The current through the current source can be expressed in terms of mesh currents (KCL)

 

A supermesh is formed by merging two meshes and excluding the shared current source as well as any element connected in series with it.

  • The current inside the supermesh provides a constraint equation needed to solve mesh currents
  • A supermesh has no current of its own
  • A supermesh requires the application of both KVL and KCL
  • Intersecting supermeshes in a circuit must be combined to form an even larger supermesh

 

Created with Microsoft OneNote 2016.