Model-Based and Model-Free of Torque and Speed Controls for PMa-SynRM Drive System

This paper describes the comparison of model- based and model-free control approaches for PMa-SynRM drive. The important improvement of the proposed control technique is the ability to determine the behavior of the state- variable system during both fixed-point and transient operations. The mathematical models of PMa-SynRM are firstly written in a straightforward linear model form to show the known and unknown parts. Before, the proposed controller, named here the intelligent proportional-integral (iPI), was applied as a control law to fix some unavoidable modeling errors and uncertainties of the motor. Lastly, a dSPACE control platform was used to realize the proposed control algorithm. A prototype 1-kW test bench based on a PMa-SynRM machine was designed and realized in the laboratory to test the studied control approach. The experimental results reveal that the proposed control achieves excellent results under transient operating conditions for the motor drive’s cascaded control compared to traditional PI and model-based controls.