Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...

"I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong...

It wasn't so long ago I was telling someone that I don't use rules of thumb as most things are easily calculated anyhow.   As it turns out I last week...

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

Coils of wire on the rotor carry a d.c. current which generates a magnetic field. A stator magnetic field is created using either permanent magnets or...

Visitors who like to type web address rather then click menus may be interested in how our URL structure works.

In three phase systems, the use of transformers with three windings (or legs) per side is common.  These three windings are often connected in delta or...

Nikola Tesla was born exactly at midnight on July 10, 1856 in the tiny village of Smiljan, Lika in Croatia. In his late teens, Tesla left the village to...

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...