Hydropower
How to determine the hydropower available at site
To determine the power available at a site, head and flow measurements must be taken. Flow is the rate at which water moves, measured in liters per minute (I/m) or… Read more
Jun 03, 2011 | By Edvard Csanyi
Hydropower
Economic analysis of an mini hydro power plant (MHPP)
Micro hydro projects must be proven to attract the interest of investors. It is also of key importance in enabling financial institutions to supply the funds necessary to finance the… Read more
May 20, 2011 | By Edvard Csanyi
Renewable Energy
Is Wind Power the Answer to Small-Scale Renewable Energy?
Wind Power. A subject that is close to my heart (literally, as I live in a very windy valley!). Wind power has the potential to be used in a home… Read more
May 18, 2011 | By carlor10
Lighting
Power supply of luminaires with magnetic ballasts
Fluorescent tubes and discharge lamps require the intensity of the arc to be limited, and this function is fulfilled by a choke (or magnetic ballast) placed in series with the… Read more
May 07, 2011 | By Edvard Csanyi
Electric Motor
VSD – Power supply connections and earthing
In accordance with accepted practice and the local, power is normally provided to a VSD from a distribution board (DB) or a motor control center (MCC). Adequate arrangements should be… Read more
Apr 13, 2011 | By Edvard Csanyi
Energy and Power
How to improve the power quality with harmonic filters
In electrical plants the loads draw from the network electric power (active) as power supply source (e.g. personal computers, printers, diagnostic equipment, etc.) or convert it into another form of… Read more
Mar 01, 2011 | By Edvard Csanyi
News
World’s largest wind turbine blade developed by Alstom and LM Wind Power
Global leader in power generation equipment and services, Alstom, and LM Wind Power, leading wind turbine blade supplier, have entered a strategic partnership to develop the world’s longest wind turbine… Read more
Feb 10, 2011 | By Edvard Csanyi
Solar Power
Solar Energy Expands, Escapes the Power Grid
Solar power has come a long way since its origins as a niche technology for satellites, finding its way into a wide range of large and small power generation applications…. Read more
Dec 24, 2010 | By Edvard Csanyi
Power Substation
Establishing New Power Substation
The construction of new substations and the expansion of existing facilities are common place projects in electric utilities. However, due to the complexity, very few utility employees are familiar with… Read more
Dec 20, 2010 | By Edvard Csanyi
Solar Power
Solar Power Tower
Solar power towers generate electric power from sunlight by focusing concentrated solar radiation on a tower mounted heat exchanger (receiver). The system uses hundreds to thousands of sun-tracking mirrors called… Read more
Dec 15, 2010 | By Edvard Csanyi
Cables
Shielding Of Power Cables
Medium and high-voltage power cables, in circuits over 2000 volts, usually have a shield layer of copper or aluminum tape or conducting polymer. If an unshielded insulated cable is in… Read more
Dec 12, 2010 | By Edvard Csanyi
Hydropower
Hydro vs. Wind vs. Solar Power?
Matthew Stein, author of When Technology Fails: A Manual for Self-Reliance, Sustainability, and Surviving the Long Emergency wrestles with that very question in his book. Here’s an excerpt: No single… Read more
Dec 11, 2010 | By Edvard Csanyi
Technical Guide/Paper
How To Apply Capacitors To Low Voltage Power Systems
In most modern electrical distribution systems, the predominant loads are resistive and inductive. Resistive loads are incandescent lighting and resistance heating. Inductive loads are A.C. Motors, induction furnaces, transformers and… Read more
Dec 08, 2010 | By Edvard Csanyi
Technical Guide/Paper
Dielectric Dissipation Factor
If an alternating voltage V of frequency f is applied across an insulation system comprising capacitance C and equivalent series loss resistance RS, then the voltage VR across RS and… Read more
Nov 25, 2010 | By Edvard Csanyi
Technical Guide/Paper
Three Phase Power
For a balanced star connected load with line voltage Vline and line current Iline: Vstar = Vline / Ö3 Istar = Iline Zstar = Vstar / Istar = Vline /… Read more
Nov 23, 2010 | By Edvard Csanyi
