(1) Winding and insulation technologies and insulation evaluation test methods for e-mobility drive motors

Winding (magnet wire) technology is evolving with electrification.
The lecture will provide an easy-to-understand explanation of the basics of high-voltage insulation and evaluation, including the partial discharge characteristics of motor windings, methods for predicting the occurrence of partial discharge, and the various factors that cause variations in PD measurement data. In addition, the lecture will explain the insulation design and reliability evaluation method to realize partial discharge free for future higher voltages of 800V or more, including specific examples.

(2) “The Difference between Automotive Millimeter Wave Radar and LiDAR” to learn intuitively with principles and videos

The three major automotive sensors (camera, LiDAR, and millimeter wave radar) are all electromagnetic sensors with different wavelengths. This section focuses on LiDAR and millimeter-wave radar, which are in a competitive relationship, and explains their characteristics and differences based on their different wavelengths. We have attempted to provide a unified explanation based on the difference in wavelengths.

(3) Basics of axial gap motors and development cases and technology trends

Axial gap motors, which can achieve high performance in a flat structure, have been attracting attention and demand has been expanding in recent years. Focusing on the structure and materials of axial gap motors, this lecture will introduce the basics, various development cases, and recent technological trends of axial gap motors. From the standpoint of a person who has faced and solved motor manufacturing and quality issues, he will explain the main points to be kept in mind, the design basis for solving problems experienced in manufacturing = why it is necessary to do so, and the reasons why the motor should be designed in the way it is.

(4) Requirements of Fluid for e-Axle and Technology Prospects

The method of simultaneously cooling and lubricating motors and reduction gears with lubricating oil, called e-Axle fluid, is becoming popular, and lubricating oil tends to be required not only for its cooling capacity, lubricity, electrical insulation, and other multifunctional properties, but also for its compatibility with a variety of materials. This paper also discusses issues that will arise in the future when lubricants are used to cool inverters and batteries.