Learning Instrumentation & Control
As an Electrical Engineer, learning Instrumentation & Control is the least that I want to do. It reminded me of my career choice after graduating from High School. I want …
Energy Efficiency or Idiocy?
Our new office building is considered to be energy efficient. I believe there is a building management system operating the building. Lighting uses energy efficient lamps. Air conditioning and lighting …
Engineering Standards – Do We Need to Comply With Them?
The project that I am currently working is now on its final stages of detailed design. There has been lots of discussions on how to get along with construction people …
Harmonics and Neutral Currents
Before the advent of computers, variable speed drives, soft starters and other non-linear loads, the only source of harmonics in power systems are industrial plants using arc-furnaces. These arc-furnaces require …
Philippine Power Shortage 2010
Reading a news of power shortage in the Philippines at this decade gives me mixed emotions. I have experienced the worst power shortage in late 80’s due to political instabilities. …
Open Circuit Faults
Majority of text books disregard open circuits when presenting unbalance faults in a power system. Almost always, only short-circuit faults are considered. In the following circuit diagrams, it is assumed …