I understand the control logic, but I have difficulty in understanding how changing the q axis current iqs (keeping d axis current ids constant) changes rotor current values.
The current in rotor is due to induction (transformer action), so only changes in ids will electrically influence...
I understand the control part, it's actually the electrical part I am confused about.
From what I understand, the torque component of stator current iqs cannot have direct influence over the rotor current iqr, as iqs is just the balancing Amp Turns of rotor current reflected into the stator...
Hello,
In Vector control of induction motor, stator currents iqs (torque component of stator current) and ids (field component of stator current) are controlled separately just as in the case of a separately excited DC motor by keeping either of the current components constant.
My question...
Due to interaction of rotor current and stator load component of current, the main air gap flux stays almost the same as it was in no-load (it would be identical if we neglect R1, L1, X2 in the equivalent circuit). In what sense is this "distorting"?
I'm going to assume "reflected balance...
Thanks for reply. I had referred to low slip values in order to simulate ideal conditions of a purely resistive rotor.
The premise of the question is that how a distorting air gap flux elicits a MMF balancing current in the stator windings if the flux density is not reduced in the absence of...
Hi Guys,
As is aware, an induction motor acts as a generalized transformer. So whenever rotor MMF is created on load condition, immediately a balancing current flows in the stator windings to neutralize the rotor MMF by transformer action. However, if we assume the rotor conductors to be purely...
https://maritime.org/doc/radio/chap7.htm
https://www.nagwa.com/en/explainers/792152624193/
https://physicsabout.com/motional-induced-emf/
Please check above links. They are self explanatory. Faraday's disk generator is based on this principle. Please review Dr. Feynman's comments in the...
Personally I try to stay away from the concept of "flux cutting" and look instead toward Faraday's law
Please see below links;
https://en.wikipedia.org/wiki/Faraday%27s_law_of_induction#Two_phenomena
https://en.wikipedia.org/wiki/Faraday%27s_law_of_induction#Two_phenomena...
https://electricalspace.quora.com/Mitko-s-electromagnetic-paradox-The-electromagnetic-paradox-I-am-going-to-describe-I-have-called-so-because-I-have-nev?ch=10&share=856f834a
A peculiar case of electromagnetic induction paradox. Please see above link.
https://youtu.be/2FvWtEdY4sE
I also pretty much enjoyed your video on moving water with magnets. Wonder if you can use rotating magnetic fields to maybe, spin the water. I don't know if it's technically possible, but would be pretty interesting and entertaining for the YouTube audience and...
https://youtu.be/HI5ERdvroec
Intriguing demo in the link above. If you have access to an oscilloscope, it would be pretty interesting to analyse the output waveforms.
check this out for induction disk relays: The Art and Science of Protective Relaying
start at the bottom of page numbered 22 (which is 32/257 of pdf).
INDUCTION-TYPE RELAYS–GENERAL OPERATING PRINCIPLES
Thanks for help, I greatly appreciate. The working principle and diagram in the pdf is the...
