Abstract
In this paper, a strong coupling between magnetic and electric phenomena is provided allowing to have an accurate and high-speed coupled model. A coupled circuit and magnetic model for an E-core transverse flux permanent magnet linear motor (TFPMLM) is proposed, which has an advantage linked to reducing time computing more than ten times when compared to 3-D finite-element model (FEM). Firstly, a multi-plane flexible-mesh nonlinear equivalent magnetic network (EMN) model is proposed to improve the computation efficiency as well as the high precision of the magnetic model. And a new method to define the converged iterative process is presented to further decrease the computing time. Secondly, the magnetic circuit and electric circuit are normalized into a solution matrix by introducing controlled sources and discretization methods which forms the coupled model. Then, the magnetic flux in the magnetic circuits and the current in the electric circuits are obtained simultaneously for each time step. The characteristics such as the air-gap flux density distribution, output thrust force waveforms and the phase currents are analyzed by the proposed coupled model. The modeling approach is approved by comparison with the 3-D FEM model. Finally, the proposed model is validated through the experimental setup with the machine prototype.
Highlights
Transverse-flux permanent magnet linear motor (TFPMLM) is being focused more and more in recent years, due to the advantages of high acceleration, high operating life, high force density, high fault-tolerant ability, and decoupling between electric loading and magnetic loading [1]
The three-phase on-load EMF waveform results based on 3D finite-element model (FEM), experiment and proposed model are shown in Fig. 18 respectively, when the motor moves in a constant speed of 1m/s. under the following conditions: at no load, means that the three phase windings are open-circuited and in the coupled model, the voltage va, vb, vc are zero and the resistances Ra, Rb, Rc are infinity, in this paper, Ra = Rb=Rc= 30k
The multi-plane flexible-mesh equivalent magnetic network (EMN) model is proposed to analysis the magnetic part of the motor
Summary
Transverse-flux permanent magnet linear motor (TFPMLM) is being focused more and more in recent years, due to the advantages of high acceleration, high operating life, high force density, high fault-tolerant ability, and decoupling between electric loading and magnetic loading [1]. This paper improved and proposed a multi-plane flexible-mesh nonlinear EMN model with a new method to define the converged iterative process to quickly analyze the TFPMLM with 3-D magnetic circuit efficiently and accurately. Reference [20] proposes a real-time equivalent magnetic circuit (EMC) machine model to accurate electromagnetic device characteristics calculation. The above-mentioned electric machines are of 2D magnetic circuit structures, which is much easier to obtain the motor model than the TFPMLM. This paper proposed coupled model of TFPMLM by introducing controlled sources with discretization methods to normalize the magnetic circuit and electric circuit into a matrix. Building a solution matrix of the equivalent circuit network by discretization methods to obtain the coupled model which calculate the magnetic flux and current simultaneously with an accurate and high-speed. The different windings are in the different iron cores, they are separated in current loops when the machine is meshed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
