Universal Model and Control Framework for Bearingless Motors with Combined Windings

This paper presents a model and control framework for bearingless motors that is generalized for all types of combined winding configurations with six phases. The aim of the paper is to facilitate the rapid implementation of MATLAB Simulink models of the electric behavior (voltage/current) and mechanical behavior (force/torque) for any bearingless motor with a combined winding. Bearingless motor developers will find this to be a useful guide for creating control simulations and understanding how changes in the number of motor/suspension poles and winding type impact their control architecture. The paper shows how the provided universal model/controller can serve as the starting point and baseline for establishing a control simulation environment that is later refined to capture the architecture-specific aspects of a practical bearingless motor control system.