Vector control for induction motors that are controlled the
same as dc motors, is also known as field oriented control.
With appropriate field orientation, stator current can be
divided into two parts of flux component and torque
component that are controlled separately. Field orientation is
generally divided into stator flux orientation, air gap flux
orientation and rotor flux orientation that the third method is
usually used in applications. To get rotor flux orientation, the
rotor flux vector r
λ