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Recommended White Papers:
[W-MU-204] Thermal Analysis Validation with Measurements for a Water-Cooled PMSM
In the development of high-performance motors, effective temperature management is critical to maximizing their performance. Therefore, a machine design that simultaneously considers both magnetic properties and cooling performance is essential. However, conventional design methods often perform magnetic and thermal analyses separately, which frequently leads to design rework.
Furthermore, while thermal equivalent circuits are commonly used for thermal design, they often require calibration of thermal resistance values with physical prototypes, making thermal analysis difficult in the design phase when a physical model is not yet available. A simulation-based approach using Computational Fluid Dynamics (CFD) is also an option, but its high computational cost makes it impractical for use during the design stage. Consequently, a key challenge in the design phase is the ability to predict motor temperature with high speed and without the need for physical prototypes.
Fig. 1 Motor Assembly
The left image shows the motor with its case, and the right image is a cross-section of the motor. In the right image, the upper and lower pipes serve as the inlet and outlet of the cooling jacket, where the coolant flows along the outer diameter of the stator core.
To solve this problem, this paper adopts a method that combines the Finite Element Analysis (FEA) and a thermal equivalent circuit. By calculating thermal resistances and heat transfer based solely on motor and cooling specifications, this approach enables a purely simulation-based temperature prediction. We applied this method to a permanent magnet synchronous motor (PMSM) that is water-cooled by a cooling jacket and validated its predictive accuracy by comparing it with measured data.
To read more, please see the following page!
JMAG Users Conference & Training 2025 in Germany
This is to announce that the Europe JMAG distributor POWERSYS will be holding the JMAG Users Conference in Germany.
The conference will be held over two days; the first day will be Training, and JMAG Users Conference will consist of the second day.
This event is a unique opportunity to engage with industry leaders and experts at the forefront of electric motor innovation. Join us as we explore the latest technologies driving the race to virtual prototyping.
Come join us!
Dates:
– BEGINNER TRAINING
– ADVANCED TRAINING
September 30th
– Advanced e-Motor Design with JMAG (JMAG Users Conference)
October 1st
Venue: LE MERIDIEN (Stuttgart, Germany)
ECCE2025
We will be run a booth at the ECCE2025 (IEEE ENERGY CONVERSION CONGRESS & EXPO).
ECCE is the pivotal international conference and exposition event on electrical and electromechanical energy conversion.
We look forward to seeing you there.
Dates: October. 19th – 23rd
Venue: Pennsylvania Convention Center (Philadelphia, USA)
Booth number: 506
