Processor in the Loop Comparative Study of Indirect Rotor Field Oriented Control, Direct Self Control, Direct Torque Control and Space Vector Modulation Based Direct Torque Control for Induction Motor Drives

DSP in the loop implementation of an improved sliding mode control for induction motor drive

“…In two-phase reference frame, electromagnetic state-space representation of the three-phase induction machine is a four variables model. In this paper we choose stator currents 𝑖 𝑠𝑑 , 𝑖 𝑠𝑞 ; and two virtual currents 𝑖 𝜑𝑑 , 𝑖 𝜑𝑞 that replace rotor flux components 𝜑 𝑟𝑑 , 𝜑 𝑟𝑞 [1], [2]. Electromagnetic state-space model is expressed in (1), juxtaposed with the mechanical (2).…”

“…In this paper we choose stator currents 𝑖 𝑠𝑑 , 𝑖 𝑠𝑞 ; and two virtual currents 𝑖 𝜑𝑑 , 𝑖 𝜑𝑞 that replace rotor flux components 𝜑 𝑟𝑑 , 𝜑 𝑟𝑞 [1], [2]. Electromagnetic state-space model is expressed in (1), juxtaposed with the mechanical (2). Where Input variables are stator voltage components 𝑣 𝑠𝑑 , 𝑣 𝑠𝑞 .…”

“…The control law integrating equivalent control and discontinuous control is then determined and smooth functions are added to sliding mode control scheme for more chattering reduction. The control law requires also the rotor flux, so this paper proposes a rotor flux estimator design [1], [2].…”

Backstepping control strategy for induction motor with rotor flux and load torque observers

“…Backstepping can be applied in fixed reference frame, but the equations are longer in this case as well as the resulting control law. This work proposes to apply Backstepping strategy in rotor flux frame [2][1].…”

“…Induction motor is a nonlinear system, so its control cannot be directly designed by classical methods; because it requires some special operations such as decoupling [1], switching table [2]... As a result, the traditional control strategies have complex algorithms and do not always give good results.…”