Model development for thermal simulation of electromechanical integrated electric water pump

Yasutaka Aoyama (AISIN)

The electric water pump consists of ECU, motor, and pump, and heat is generated and dissipated in these three components, resulting in complex heat flows. In this case, we will introduce the development of a thermal simulation model, which serves as a digital tool for the thermal design of integrated electromechanical ECU.

Reduction of Harmonic Current Flow into DC Link Capacitors via Rectifiers in Series Hybrid Vehicles

Aira Katayama･Haruka Tominaga･Keiichiro Kondo (Waseda University)･shun Taniguchi (Astemo Corporation)

In a series hybrid system, performing pulse-mode switching on the drive motor side causes harmonic currents to flow into the DC link capacitor. To mitigate these harmonics, harmonic superposition is applied via the switching control of the rectifier (generator-side inverter), thereby reducing the harmonic currents flowing into the DC link capacitor.

Analysis of motor vibration during operation by linking electromagnetic field analysis and structural analysis

yuya watanabe･tatsuki yamada (Honda Motor)･masayuki ryokata (AUTO TECHNIC JAPAN)

Focusing on a permanent magnet synchronous motor, the electromagnetic excitation force calculated through electromagnetic field analysis was input into a structural analysis model of the stator, and a method for analyzing stator vibrations that occur during product operation was studied. The electromagnetic excitation force was decomposed into spatial and time orders, and the vibration response of the time order was calculated by tracking the speed change of the motor, and the results were compared with the experimental results.

Development of A New Power Control Unit Built Into e-Axle For the 6th. Generation Plug-in Hybrid System

Satoshi Yasuda･Keisuke Yuki･Syuhei Hisada (TOYOTA Motor Coporation)･Shingo Miyamoto･Kunihiro Suzuki･Tomohiko Sato･Keita Hayashi (DENSO)

To achieve carbon neutrality, it is essential to develop vehicles with diverse powertrains tailored to the needs of customers in each region. At TOYOTA, we refer to this approach as the 'Multi-path way approach.' In this paper, we introduced that we have developed a new power control unit built into the e-Axle for the 6th generation plug-in hybrid system. Additionally, for the first time, we have applied SiC semiconductors to the power control unit in the Toyota Hybrid System (THS), and we will introduce the purpose and benefits of this application.