Interesting article

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lielec11

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gadfly56 said:
That would be Galileo Ferraris and Nikola Tesla, independently. Westinghouse licensed Tesla's design.
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Tesla was the father of AC power. Do a search for all his patents and you'll see. Only reason Edison gets more notoriety is because Tesla was more of a recluse while Edison was an idea stealing a-hole.
 
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gar

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170605-1541 EDT

At my previously referenced location read about Charles Proteus Steinmetz.

A quote from the Steinmetz discussion
At the time, electrical engineers were concerned with reducing the losses of efficiency in electrical apparatus due to alternating magnetism (hysteresis). The laws of this power loss were entirely unknown and many engineers doubted its existence. Steinmetz, however, having been given the task of calculating and designing an alternating-current commutator motor and wishing to calculate the hysteresis loss, derived the law of hysteresis mathematically from existing data. He followed this with an elaborate series of tests on any and every sample of iron obtainable to prove the law and simplify its application and in 1892 read two papers on the subject before the American Institute of Electrical Engineers.
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A little later he developed the concept of vectors or phasors and related math approaches for AC circuit analysis. Prior to this time AC analysis was via complex calculus equations.
While he was engaged in his studies of magnetism at Yonkers he had begun studies of alternating electric current phenomena, which were then little understood and most complex. Through the application of pure mathematics involving a degree of intricate work bewildering to the layman, he found a mathematical method of reducing the alternating-current theory to a basis pf practical calculation, and presented a rather complicated outline of the new method to the International Electrical Congress in session at Chicago, Illinois, in 1893. He found himself in unapproachable intellectual solitude however, for practically no one could understand his theory or use his method. Gradually however, through the publication of several textbooks he brought about a clear understanding of his symbolic method, which is now universally used in alternating-current calculations.
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Wiki at ( https://en.wikipedia.org/wiki/Phasor ) gives credit to Steinmetz relative phasor analysis.

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Sahib

Sahib

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Steinmetz introduced complex number method of analysis in AC theory. But prior to him, AC theory and power factor concept in it existed. So who invented AC theory?
 
ActionDave

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lielec11 said:
Tesla was the father of AC power. Do a search for all his patents and you'll see. Only reason Edison gets more notoriety is because Tesla was more of a recluse while Edison was an idea stealing a-hole.
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Tesla was a nut job who spent all his resources trying to pump a million volts into the atmosphere. If Westinghouse hadn't come alongside him who knows what would have happened.
 
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retirede

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Imteresting article

Imteresting article

ActionDave said:
Tesla was a nut job who spent all his resources trying to pump a million volts into the atmosphere. If Westinghouse hadn't come alongside him who knows what would have happened.
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Nut Job.....genius.....often go hand in hand. And which label sticks can depend on a lot of things including the bias of the observer. :)

Steinmentz spent a huge effort trying attract a lightning strike so he could study its effects. I'm sure some referred to him as a nut job, also.
 
Fulthrotl

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ActionDave said:
Tesla was a nut job who spent all his resources trying to pump a million volts into the atmosphere. If Westinghouse hadn't come alongside him who knows what would have happened.
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well, westinghouse would have had to not pay royalties to someone else.
the polyphase motor patent that tesla held was licensed to westinghouse
at the rate of $1 a horsepower, with a $15,000 guarantee per year.

this being in 1888, was a fair bit of change. westinghouse, it seems, didn't
get around to paying for most of it, and tesla released him from the obligation.
they settled up later, after a fashion.

and tesla, being just a bit eccentric, didn't manage the entire thing well.
it seems however, that tesla possessed a grasp of resonance that remains
significant to this day.

conspiracy theorists run amok with how his genius had been thwarted,
but most of that sounds like the stories of the 150 mpg carburator that
detroit suppressed. :blink:
 
junkhound

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gar said:
170601-1005 EDT

...but it did not solve my search problem.

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Surprised you did not get the answer yet.

J.C. Maxwell.


Over the years there have been many who 'invented' different math tools, one of the more useless are A,B, C, D parameters that just inject a lot of drivel into otherwise simple network analysis. No idea who that was.

Then there is whoever came up with negative, positive, and zero sequence factoring. No idea whose wet dream that was either.

The most useful tool these days is Spice and PSpice (Roher/Pedersen/Nagel/uSim)


All used J.C's original equations.
 
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