The document presents a cascaded plus state feedback optimal controller design for a three phase induction motor. It begins with an overview of induction motors, electric drives, linearization, and optimal control techniques. It then describes the proposed controller which cascades a pre-defined controller with the plant and uses an LQR controller. Simulation results show the cascaded controller improves dynamic and steady state performance and better rejects disturbances compared to a regular controller. The conclusion is that the cascaded plus state feedback controller provides better control of the induction motor.