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3-Phase Power Factor Correction Using Vienna Rectifier Approach


Posted by: seminar class
Created at: Wednesday 04th of May 2011 05:16:41 AM
Last Edited Or Replied at :Sunday 15th of May 2011 03:05:16 PM
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effects are lower I2R losses, steadier terminal Voltages, released system capacity and
reduced cable & switchgear sizes. Active PFC front ends also help meet the IEEE 519-
92, IEC-555 and European EN 61000-3-2 standards for allowable harmonic contents of
mains.
2.1 Advantages
Although there are some passive and active 3-Phase PFC solutions, Vienna Rectifier is
unique by virtue of its embodiment of several advantages:
1. It is a 3-Phase, three level PWM rectifier, utilizing three MOSFETS, with controlled
output Voltage; three wire input, not requiring any connection to Neutral.
..................[:=> Show Contents <=:]



Fuzzy Logic based fault detection in induction machines using Lab view


Posted by: computer science technology
Created at: Tuesday 19th of January 2010 10:29:00 PM
Last Edited Or Replied at :Tuesday 19th of January 2010 10:29:00 PM
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ab/Simulink and designing an intelligent system for condition monitoring of the motors. The phase two concerned with the implementation of On-line condition monitoring system through LabView...................[:=> Show Contents <=:]



electronic projects for engineering students


Posted by: electronics seminars
Created at: Friday 15th of January 2010 12:51:22 PM
Last Edited Or Replied at :Wednesday 12th of December 2012 01:17:39 AM
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gh Fuzzy-SMC-PI Control “
qqqqq. A Fuzzy Logic Controlled Sliding Mode Control (SMC) of Inverter in Shunt Active Power Filter for Power Quality Improvement “
rrrrr. Design of an Intelligent Bi-Directional DC-DC Converter with Half Bridge Topology “
sssss. Direct Torque Neuro Fuzzy Speed Control of an Induction Machine Drive based on a New Variable Gain PI Controller “
ttttt. Embedded Controlled Z Source Inverter Fed Induction Motor Drive “
uuuuu. Multi-Input Fuzzy Logic Controller for Brushless DC Motor Drives “
vvvvv. Smart Configurable Wireless..................[:=> Show Contents <=:]



electrical engineering projects ideas


Posted by: electronics seminars
Created at: Friday 15th of January 2010 06:35:32 AM
Last Edited Or Replied at :Saturday 26th of March 2011 10:28:37 AM
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CD CONTROL EMBEDDED SYSTEM
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ss. 3 PHASE MAINS SCANNER WITH HIGH CURRENT TRIPPING (M)
tt. AUTO IRRIGATION SYSTEM (M)
uu. CELL PHONE OPERATED LAND ROVER (M)
vv. ENERGY SAVING BY OBJECT COUNTING (M)
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aaa. SEMICONDUCTOR ELEMENT BASED VERSATI..................[:=> Show Contents <=:]



Micro controller based automated irrigation system


Posted by: Electrical Fan
Created at: Monday 14th of December 2009 07:55:48 AM
Last Edited Or Replied at :Wednesday 11th of April 2012 10:15:32 PM
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is the transmission of electric power by alternating current. Usually transmission lines use three phase AC current or Single phase AC current..................[:=> Show Contents <=:]



electrical engineering projects for final year


Posted by: computer science crazy
Created at: Tuesday 10th of November 2009 05:25:09 AM
Last Edited Or Replied at :Saturday 11th of February 2012 12:31:30 AM
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NERATOR
124. HEART BEAT MONITOR WITH WAVE ON LCD(PIC BASED)
125. IR FOLLOWER ROBOT
126. ..................[:=> Show Contents <=:]



Design of Voltage Regulator


Posted by: Computer Science Clay
Created at: Sunday 25th of January 2009 02:24:07 AM
Last Edited Or Replied at :Sunday 25th of January 2009 02:24:07 AM
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ign purpose however to add conservation to them that enable a expressed in inches. & B in gauss.
This conservation is accomplished by including the factor 6.45 in bottom line. (There are 6.45 Sq Cm to Square inch )
? N = 108 = 108
V 4 .44 x 6.45 fa B 28.64 fa B

Or dividing N = 3.49 x 106
V f a B
Apply the factor 6.45 to equation
N = 108
V 25.8 F fa B
Finally let up consider following variant of Equation.
V = 4 F f N ? x 10-8
It this is compared to basic Equation.
? is now being used to replace a x B
B = ..................[:=> Show Contents <=:]



Solar power satellite


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:09:26 PM
Last Edited Or Replied at :Tuesday 31st of January 2012 11:18:59 PM
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This changed in 1973 when Peter Glaser was granted U.S. patent number 3,781,647 for his method of transmitting power over long distances (eg, from an SPS to the Earth's surface) using microwaves from a very large (up to one square kilometer) antenna on the satellite to a much larger one on the ground, which came to be known as a rectenna.

Glaser then worked at Arthur D. Little, Inc., as a vice-president. NASA became interested and signed a contract with ADL to lead four other companies in a broader study in 1974. They found that, while the concept had several major problems -- chiefly t..................[:=> Show Contents <=:]



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