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Member

Join Date: Apr 2008
Posts: 8

induction machines

04/16/2008 7:19 PM

hi everybody i am trying to prove the mmf equation of two phase balanced induction motor it is simple but i get cosine and sine equation mmf=mmf(max)*(3/4*cos(omega*t+epsi)-3/4*sin(omega*t+epsi)) does it mean the mmf is pulsating or rotating one? if anybody can give a help i will be thankful also if u can recommend a ref. or link to site to see the calculation of two phase mmf thnx in advance

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Join Date: Apr 2007
Location: Sunken Meadow (nee Rattle Snake Swamp) L.I., N.Y., U.S.A.
Posts: 40
#1

Re: induction machines

04/19/2008 10:14 PM

If you are a hot shot, take a look at: A new Introduction and List of Publications of Gabriel Kron. Dover, New York, 1959. Equivalent circuits of electric machinery. Wiley, New York, 1951; Kron, G., Application of Tensors to the Analysis of Rotating Electrical Machinery. GE Review, 1942. Kron, G., Equivalent Circuits of Electric Machinery.

Also, on a much simpler level, the good old Fitzgerald & Kingsley is one of the best.

Arthur Eugene Fitzgerald, Charles Kingsley, Stephen D. Umans - 2002 - Technology - 704 pages. The exciting new sixth edition of Electric Machinery has been extensively updated while retaining the emphasis on fundamental principles.

I taught this stuff, and students could grasp F & K rather easily.

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