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


277 – Vibration Analysis of Axial Gap-Type Motors

Overview

Axial gap type- motors can be can have a thinner construction than radial gap-type motors, and are used for in-vehicle motors where space is limited. In general, the motor is quiet compared to the engine, however, the wide rotation speed range may at times cause the vibration noise to be a problem.
In order to evaluate noise/vibration caused by electromagnetic force, it is necessary to accurately obtain the source of sound radiation, the total eigen mode of the motor, including the cases it is linked to must be perceived and taken into account at the same time.

It is effective to use the finite element method in simulations before creating a prototype to assess the level of vibration caused by air distribution from electromagnetic force and eigen mode.
In this example, phenomena confirmed in axial gap-type motors that occur at maximum sound pressure level, from an electromagnetic excitation force and eigen mode perspective.

Frequency Characteristics of Maximum Sound Pressure Level

Sound pressure level target plane for stress evaluation is shown in Fig. 1 and frequency characteristics of maximum sound pressure level is shown in Fig. 2.
As shown in Fig. 1, sound pressure level target plane for stress evaluation is on a 200 mm diameter sphere.
As shown in Fig. 2, sound pressure level reaches maximum at 1,333 Hz.
The phenomena that occur when reaching maximum sound pressure level is confirmed from an electromagnetic excitation force and eigen mode perspective.

Please see the website for “Electromagnetic Force History Acting on Teeth / Frequency Component” and “Spatial Mode of Electromagnetic Force Acting on Teeth”.

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DESIGN, MODELING, AND PERFORMANCE EVALUATION OF A 2010 TOYOTA PRIUS MOTOR

Webinar:
Organizer: POWERSIM
Date: Thursday, September 16th, 2021 at 1 PM (EDT)

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JMAG Users Conference 2021 in Taiwan

This is to announce that the Taiwan JMAG distributor WisEnergy will be holding the JMAG Users Conference 2021 in Taiwan.
We look forward to your participation.

Date: September 29th, 2021
Please see the following page for the details.

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JMAG & PSIM Users Conference 2021

This is to announce that the European JMAG distributor POWERSYS will be holding the JMAG&PSIM Users Conference 2021.
This conference will center around case studies using JMAG and PSIM, and will be held online from September 27th to October 1st, 2021.

Experts and developers in the field of electricity and power electronics will be in assembly at the conference, with those from countries outside of Europe also more than welcome to take part.
We look forward to your participation.

Please see the following page for the details.

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