Today, we present a case study with updated content in January.
[JAC285] Integrated Magnetization Analysis of an SPM Motor by Magnetizing Multiple Times
Overview
Permanent Magnet Synchronous motors (PMSM) sometimes use a method known as integrated magnetization. This is where magnets are assembled without magnetization then magnetized after the assembly. Depending on the combination of the number of poles and slots, the magnets may not be sufficiently magnetized by just one magnetization. The magnets are then magnetized more than once by rotating the rotor or changing the current values. In situations like these, the design must prevent the irreversible demagnetization of the magnets that have been previously magnetized.
In this example, the magnets are magnetized more than once with the rotor at different positions to evaluate the magnetization distribution in the magnets while also accounting for hysteresis.
Magnetization Field Distribution
The magnetization field distribution and the magnetic flux line diagram when the magnetization current is 1 kA are shown in Fig. 1. The magnets are evaluated for the 1st and 2nd magnetizations. In the analysis, the magnets are evaluated as being arranged in the same positions. In the diagram, the stator side is shown as having been rotated. Note that the magnets are arranged in a radially outward orientation direction.
Please see the website for “Magnetization Distribution of the Magnet Positioned in the Air”.
Sample data is available to JMAG proper users and requires license ID to access.
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JMAG Open Interface programs
We have updated our site introducing case studies of linked analysis.
In recent years, the sophistication of electrical equipment design is required. As known there is a limit to the design of magnetic circuits alone, therefore multifaceted evaluations such as structure, vibration, heat, and control are required at the same time.It is more efficient to perform coupled analysis by linking different software where they have their own strength in the respective physical phenomenon rather than to adhere to one CAE software.
This week, we present a case study from TODA RACING Co., Ltd.
Please access the page above to view the case study.
[Free Webinar] Introducing JMAG-Designer Ver.22.0
In December 2022, JMAG-Designer Ver.22.0 was released.
Powersys, a JMAG distributor, introduces JMAG-Designer Ver. 22.0.
[EU session] February 23, 2023 10:00 AM