Development of Imitation Model of an Electromechanical Energy Converter with a Solid Rotor in ANSYS RMxprt, Maxwell and Twin Builder

Abstract

This paper presents the development of a platform for coupling modeling (cosimulation) of an electromechanical energy converter using Ansys Maxwell and Ansys Twin Builder. The researched electromechanical energy converter is based on the operation principle of an induction motor with an external hollow solid rotor. The paper reveals the specifics of modeling this type of special electric machine. In the work, step-by-step modeling of the machine in Ansys RMxprt, export of the model in Ansys Maxwell 2D and 3D with further co-simulation in Twin Builder was performed. It shows how to set up the project to import an object calculated by the finite element method from Ansys Maxwell into the Twin Builder sheet. Coupling simulation of an electromechanical energy converter with a stable three-phase power source was performed. The simulation model considers the presence of a step mechanical load during the run-up to the rated speed. Such structure of a coupling project gives better simulation results compared to the use of simulation models with concentrated parameters, based on the implementation of differential equations of electromagnetic transients using functional blocks. The obtained characteristics showed a high coincidence of the expected results according to the indicators of phase currents of the stator winding, moving torque and rotation speed. This paper will be useful for coupling modeling special-purpose electrical machines that are not available in the Ansys Twin Builder library as ready-made blocks.