In steady state condition, mechanic and electric torque are synchronous (balance). But if voltage of the machine is increase then electric torque is changed and so the torque is not balance. In this case the mechanic torque should be adapted to the electric one to remain in synchronism.
So I am worry that the system will be introduced to dynamic condition and after 10 sec the system will be collapse if the voltage change is high enough and there is no improvement inside the system.