Dynamic meshing for the circuit-field analysis of inverter-driven induction motor

The dynamic meshing for the circuit-field analysis of inverter-driven induction motors is very difficult because of the existence of teeth, slot and airgap in the motor. In this paper, we aim at a new method for dynamic meshing applied for the design and analysis of induction motors with variable frequency and speed. The underlying principle of the new meshing method includes deforming and simplifying the Delaunay advancing-front combined method, after the thorough comparison of several finite-element meshing (FEM) methods. The new method is to divide one pending domain into some banding domains, and the lattices are created based on the principle of the shortest distance. A FEM module is realized by using this method. As a result of comparing with ANSYS, the module is more efficient and convenient with less nodes, elements, and use of computer´s CPU source and memories. The new method is suitable for the dynamic meshing for the design and analysis of the inverter-driven induction motor with high efficiency.