An Evaluation of the Current Tracking PBC for Switched Reluctance Motors

In this paper the problem of current tracking control for the three phases Switched Reluctance Motor (SRM) is approached from the Passivity Based Control (PBC) perspective. The methodology applied has two important steps; the first one is to analyze the system structure of the simplified Euler-Lagrange mathematical model of the SRM system, which allows the decomposition of the electrical and mechanical subsystems. Exploiting this property, the key to the control design is on the interconnection of the subsystems; where the current control is designed for the electrical subsystem and the mechanical subsystem, due to its passivity properties, can be considered as a passive perturbation. Also, it is proven that the angular velocity of the motor is bounded, therefore the mechanical subsystem is also bounded. To validate this result, a numerical evaluation is made with a Matlab/Simulink simulation performed with parameters of a three phase SRM 12/8 Emerson Electric Co.