Monday, May 23, 2011

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

using only 3 phase AC source device, explain how to control the speed of dc motor

Posted: 22 May 2011 12:48 PM PDT

Hello
Actually, I was asked to control the speed of dc motor from zero to full speed in both direction from different values of the driving voltage using only 3 phase AC source.

Does any one have any idea how to do that ?

thanks in advance

oil filled transformer

Posted: 22 May 2011 06:03 AM PDT

Hi,I'm taking degree in electronic engineering.We are going to do our final year project.I seek help from my lecturer and he gave me the title about oil-filled transformer but i dont really know the directions to do it.Hope to get helping hands here.really appreciate much.
my lecturer has provided me 3 titles such as:
1.Design of oil type transformer by using MATLAB
2.Analysis of oil type transformer in 3 phases power system
3.Testing of the oil type transformer by using different type of oils and building prototype


This is a link about what an oil-filled transformer is:
Oil Filled Transformers - Oil Filled Transformers
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