Author Archive
When Loss Reduction Projects Tends to Loss Increasing…
Astronomical clocks, unlike photocells, control street lighting based on time of sunrise and sunset which is calculated based on latitude and longitude of the street. This equipment has a main advantage in respect to photocell which is reducing on-time and off-time errors caused by contamination of the opaque cover of the photocell.
In inspecting one of the pilot projects, accidentally i turned my thermal imaging camera on one of these astronomical clocks (which was installed in the distribution substation) and saw the below image!
This picture reminds me a report that has presented in a loss reduction conference in Madagascar island . In this report, noted that after two years of executing loss reduction projects in an African country , studies show that energy losses increased 1% !!!!!!!
Generalized Theory of Electrical Machines
Generalized theory of electrical machines provides a common framework for studying, modelling, simulating and understanding the behavior of all electrical machines. In this theory, by using Kron’s primitive hypothesis machine we can simulate all kind of machines. This model is a dependent model to the reference frame that will be selected for studies. Different reference frames can be chosen depending to case. For example, stationary or moving common frames (with different speeds) are common . Here i introduce 8 video lectures for reviewing the generalized theory of electrical machines. The lecturer is Professor S.P.Das from Indian institute of technology Kanppur.
Lecture 2 : Kron’s Primitive Machine
Lecture 3 : Modelling of Dc Machines
Lecture 4 : Modelling of Induction Machines in ABC model
Lecture 5 : Transformation from ABC to dqo
Lecture 6 : Modelling of Induction Machines in dqo model and reference frame theory
Lecture 7 : Modelling of Synchronous Machines (1)
Lecture 8 : Modelling of Synchronous Machines (2)
Energy University™ by Schneider Electric Expands Curriculum
Schneider Electric, announced an expanded curriculum, additional languages and education credits, for its vendor-neutral, online educational community, Energy University™. Designed to provide the fundamentals needed to implement successful energy efficient solutions, Energy University has seen more than 21,000 registered users since its launch in June 2009. Twenty-one new courses have been added to the curriculum in 2010 to increase the educational offering to 34. Courses are available in multiple languages – English, German, and Spanish, with French, Italian, Brazilian Portuguese, and Russian launching later this year. Additionally, Energy University has now launched a fully translated version of the site in Chinese, making this the first online energy efficiency program available in that country.
A great Web Page
Here, you can check the world’s events, emergencies and disaster information….