Magnetic circuit simulation request

m II · 2013-08-22T01:34:45+00:00

I have no experience using the programs available for finite element analysis and don't have the time to learn how to use one.. If someone experienced with their use could run a simulation, it would be of great benefit. I have a microwave oven transformer of 1000W rating. I would like to remove the "I" part of the core, leaving the "E" segment, along with the windings. What I am interested in finding out is what happens when a permanent magnet pole is moved past the centre leg of the core. What is the change when a metallic return path to the back of the magnet is provided? Think of a steel strip with the magnet in the centre. This strip would sweep across the three legs of the core. What change with a large disc magnet in the centre of the strip and two smaller magnets with flipped polarities on the outer ends? I'm assuming the air gaps remain the same. Any units of comparison would be great, as it's the *relative* output changes in the windings that I'm interested in. There has to be a way of simulating this on the computer. I don't want to build the project in real life until I can see some promise of success. This coil/core would become 1/9 of a wind turbine alternator and be rectified for use. One of those neat multicoloured flux flow graphics would be interesting. mike -- It is hard enough to remember my opinions, without also remembering my reasons for them! Friedrich Nietzsche

Aug 22, 2013 41 Replies

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krw 12 years ago

AKA synchronous capacitor; used for power factor correction.

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Fred Abse 12 years ago

That's the fella.

Some of the explanations I've seen beggar belief, Why is it that the power engineering fraternity are so fond of vector diagrams?

It can be explained with half a dozen lines of complex algebra.

"Design is the reverse of analysis" (R.D. Middlebrook)

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