I am studying R.Krishnan for dynamic modelling and vector control strategies of Induction motor-drives. Is there any better book, cause there is no one to teach me or help me... and i got struck with this book and I feel its poorly explained, perhaps anyone who has followed this book can help me...
I got struck in Pg 200, i do not know how equations 5.54 to 5.57 are formed, why negative sign in eq 5.57, the book says its because of positive current in beta winding, but i did not understand it.... then it should be same for beta d axis as well... can someone explain more clearly, if you know....
And equation 5.70 in pg 202, the formation of Vqrr and Vdrr, i have no idea why in Drr all the fluxes are helping and is additive, and Qrr all the other fluxes are opposing Vqrr... current terminologies not clearly explained by the author...
For Eq. (5.57),
The reason of negative sign is that the angle between the q-axis and the beta-axis equals [180-(theta_r)].
Hence, cos (180-(theta_r)) = - cos (theta_r)
Dear Joseph Christopher;
I hope that my answer is helpful for you.
If you want any thing else, please do not hesitate to tell me.
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