Why is the Per Unit description not found when I search for "pu" in the documentation of SimPowerSystems 3.1 (R14)?

I was using the Multi-Winding Transformer block from SimPowerSystems and wanted to know what the unit of "pu" stood for. I searched the documentation and my search did not return the most relevant link: web([docroot,'/toolbox/physmod/powersys/technic3.html']). Also, nowhere in that block's documentation does it even mention the phrase "per unit" or "pu". Instead, it mentions p.u., which does not return any results if I search for it in through the Help browser.

Answer 1

[MathWorks Support Team]

Many blocks in SimPowerSystems 3.1 (R14) use units of "pu", or "p.u.", which stands for Per Unit. Unfortunately, due to a Help browser limitation, the search for the string "p.u." returns no results. This issue is being addressed.

Additional information on the Per Unit system can be found by entering the following at the MATLAB Command Prompt:

web([docroot,'/toolbox/physmod/powersys/technic3.html'])