To our valued customer,

JMAG-Designer Ver. 21.1 has been released.
Today, we would like to introduce the Application Catalog that was newly added with the release.

[JAC279] Thermal Analysis Accounting for Cooling of the IPM Motor


EV/HEV traction motors operate at ranges such as high torque and high power ranges. When running at such operating points, the temperature of parts rises as the loss becomes the heat source. Cooling system design using water jackets and ATF is put into practice as normal cooling by air allows the parts to exceed their heat resistant temperature.

It is possible to run an analysis that takes into account the cooling and the heat resistance between the parts by using the thermal equivalent circuit.
In this example, thermal equivalent circuit is used to run thermal analysis of a 3-phase IPM motor that accounts for cooling, and check the temperature change in the coil.

Cooling Specifications

Cooling specifications are shown in Fig. 1.
The water jacket is installed on the upper 90 deg sector of the stator.
Assume that oil in the ATF pool accumulates inside the lower 90 deg sector of stator.
Housing, coil end and shafts are modeled in the thermal equivalent circuit.

Please see the website for “Thermal Equivalent Circuit” and “Temperature Change in Coil”.

Read more

Sample data is available to JMAG proper users and requires license ID to access.
* If you are not a JMAG user and are interested in JMAG, please let us know using the inquiry form. We will contact you later.Contact us from here

JMAG Users Conference & Workshop 2022 in France

We will be hosting the JMAG Users Conference in France.
The conference will be held over three days; the first and second day will be JMAG Users Conference, and Workshop will consist of the second day and the third day.
We will also hold training with a focus on JMAG features.
This will be a great opportunity to gain information on electromagnetic analysis technology trends, usage environments, and so on. Come join us!

– 2022 JMAG Users Conference
 Sep. 27 th at 9 am to Sep. 28 th at 12 pm (FREE)
– JMAG workshop
 Sep. 28th at 1.45 am to Sep. 29th at 5 pm (FEES: from 1,400 EUR)

Location: Hotel West End Nice (FRANCE)

For more Informatio