Answer / sanjeet

due to residual magnetic present in the rotor core

Answer / gopaul

initially we need three phase supply from the grid for
excitation.we have to start the motor as a generator,and
then by using the external energy we have to increase the
speed of the motor above syn speed.after that it starts
working as a induction generator

Answer / mina adeeb

yes i agree, it generates power due to the residual flux
in the rotor but without excitation i can't get high power
because a small flux

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