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We will introduce the latest trends regarding TIM (Thermal Interface Material), which is becoming increasingly important in the thermal management of xEV onboard devices, covering its required characteristics, adoption trends, and material design and formulation technologies.

Countries are being urged to reduce CO2 emissions in pursuit of carbon neutrality, and in the automotive sector, the adoption of electric vehicles (such as electric cars and hybrid vehicles) powered by permanent magnet synchronous motors is accelerating. While permanent magnet synchronous motors have the advantages of being compact, high-output, and highly efficient, they also face the challenge of increased vibration and noise due to the electromagnetic forces of the motor. This seminar will introduce the mechanisms behind the vibration and noise generated by motor drive systems using permanent magnet synchronous motors, and will present improvement methods categorized into motor, control, and mechanism. The goal of this seminar is to learn vibration and noise improvement techniques from a system perspective, including electrical and mechanical aspects.

From the perspective of someone who has actually designed and manufactured, I will explain the key points that must be considered in design and manufacturing. Motor design involves not only torque, power, and efficiency calculations but also the strength of the frame, shaft, high-speed rotating rotor, bearings, etc., as well as the electrical insulation performance of the stator, insulation withstand voltage, inverter surge voltage insulation performance, heat dissipation and cooling, vibration, noise, bearing electrical erosion due to leakage magnetic flux, and noise generation, among various other challenges. A broad range of knowledge is essential, including electromagnetics, material mechanics, electromechanics, mechanical work, properties of organic insulators, and discharge engineering. Additionally, high reliability for quality maintenance and improvement is also required for automotive main motors. The instructor has approximately 40 years of experience in motor design, with 13 years dedicated to automotive motor design, and from the standpoint of having faced and solved manufacturing and quality issues, will explain the key points that engineers in the same field should focus on. In other words, rather than just the secrets to producing small motors with high torque, I will discuss the design rationale for solving problems encountered during manufacturing (why it must be done this way).