A 2-D Mesh-Based Magnetic Equivalent Circuit Model for Hybrid Exciting Magnetic Lead Screw

To reduce the time consumption of dynamic performance analysis and optimization design for the hybrid excitation magnetic lead screw (HEMLS), a two-dimensional (2-D) mesh-based (MB) magnetic equivalent circuit (MEC) model is proposed. In the proposed model, the mesh structure of the proposed model doesn’t need to rebuild for each time instant, and only the parameter value of each element needs be updated to describe the status of HEMLS. To simply the proposed mesh-based MEC model, both PM and current exciting sources in one pole are together considered as one magnetomotive force. Meanwhile, the density of the mesh can be adjusted according to the solution region to decrease the time consumption. Finally, the proposed MB-MEC model is verified by comparing it with the static thrust force from the finite element method and prototype test under load and no-load conditions.