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We introduce analysis cases that we received inquiries from customers and are often viewed on the WEB.

[JAC267] IPM Motor Topology Optimization Using the Density Method

Overview

Motor design requirements are becoming more sophisticated. While satisfying the torque ripple rate and back electromotive voltage, line voltage limits, magnet demagnetization resistance, the stress on cores, and displacement constraints due to centrifugal force, it is required that torque is maximized at both low and high speeds.

Optimization that uses FEA is effective in satisfying these strict requirements. Design proposals can be obtained with a high degree of freedom because topology optimization in particular can perform searches that are not dependent on initial shapes.
Magnetic field and structural coupled analysis is run in this example. While accounting for rotor core strength, topology optimization that uses the density method is used to perform searches for a rotor shape that maximizes average torque.

Optimization Conditions

Fig. 1 shows the design region, Table 1 shows the evaluation item and objective functions.
The red frame shown in Fig. 1 is the design region. Topology accounts for the symmetry per each 1/2 pole while accounting for the rotor strength.

Please see the website for “Optimization Results”.

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Apr 19: [EU webinar]
Next Generation EV Motor Design using JMAG-Designer

Mr. Bernd Cebulski of IAV GmbH, who gave a lecture at JMAG Users Conference 2021 Hybrid in Japan, will be presentation.
If you missed it, please participate in the webinar hosted by POWERSYS.

Dates: Tue, Apr 19, 2022 02:00 PM (CET) / Tue, Apr 19, 2022 09:00 PM (JST)
Location: Online
JMAG Users Conference Proceedings

For more Informatio

Apr 21: [EU webinar]
DOE-based Optimization of Electrical Machines

Mr. Stephan Guenther of IAV GmbH, who gave a lecture at JMAG Users Conference 2021 Hybrid in Japan, will be presentation.
If you missed it, please participate in the webinar hosted by POWERSYS.

Dates: Tue, Apr 21, 2022 02:00 PM (CET) / Tue, Apr 21, 2022 09:00 PM (JST)
Location: Online
JMAG Users Conference Proceedings

For more Informatio