Modified backstepping control of IPMSM: Experimental tests

Abstract

The purpose of this paper is to propose a new control technique for an interior permanent magnet synchronous motor that has been designed using a modified integral backstepping controller. This architecture consists of a nonlinear backstepping control scheme to achieve the purpose of speed tracking. Then the nonlinear controller based on the backstepping control scheme with the introduction of integral actions is designed for the IPMSM drive system. The suggested controller is not only designed to stabilize the interior permanent magnet synchronous motor system, but also to ensure that the speed tracking error converges asymptotically to zero in the existence of system uncertainties and external disturbances. The advantage of the suggested approach is that the proposed controller guarantees good tracking performance, reduces steady-state errors, robustness against all parameter uncertainties, and load torque disturbances in the interior permanent magnet synchronous motor system. A new speed control scheme for the design of the interior permanent magnet synchronous motor is being developed in this work. To show the feasibility of the suggested approach, the experiment is carried out with a real-time interface based on dSPACE. A comparison with the proportional-integral controller has been made. The results prove that the proposed backstepping controller has a rapid transient response and strong robustness for all disturbances under different conditions.