Development of a Model-Based 2-Stage Motor System Inverter Durability Test Mode Reflecting Customer Usage

Minsu Hyun･Miyong Lee･Je Hwan Lee･Yeong Ju Koh (Hyundai Motor)

This study proposes a methodology for developing durability test profiles for a 2-stage motor system inverter based on real-world customer usage. A C-segment electric crossover vehicle was used as a reference to generate simulation scenarios, and a multi-physical vehicle model was applied to reproduce operating conditions. The generated scenarios were applied to a target vehicle to calculate inverter thermal loads, and an optimization approach was used to derive durability test profiles. The proposed method reproduced customer usage within a 5% error margin and established durability test profiles applicable to component-level inverter durability testing.

Research on integrated charging and Power supply system for electric vehicle

Keisuke Azusawa･Yoshihisa Kubota･Soumei Nakatomi･Kiyoshi Asami･Keiya Nimura･Takumi Todoroki･Naoya Naito (Honda R&D)

As electric vehicles incorporate a large number of electrical components, there is a growing demand for miniaturization, cost reduction, and high efficiency. In this study, an integrated charging and power supply drive unit utilizing a traction motor and inverter is investigated. By switching the motor windings between series and parallel configurations, both high power and high-efficiency drive operation are achieved. Furthermore, torque-free operation during AC charging and high charging efficiency are simultaneously realized.

Development of a BEV System for Toyota's New Mid-Size Pickup Truck

Hayato Suzuki･Kengo Maeda･Takeshi Hashimoto･Koichi/ Nakamura･Hiromitsu Kawamori (Toyota Motor)

Toyota is promoting a multi-pathway strategy to achieve carbon neutrality by addressing increasingly stringent fuel economy and emissions regulations while delivering attractive vehicles that exceed customer expectations. As part of this approach, this study presents the development of a battery electric vehicle (BEV) powertrain system for a mid-size pickup truck, which plays a vital role in supporting society, particularly in commercial applications. The developed system is designed to provide off-road driving capability.

Development of the Third Generation 100% Electric Drive Hybrid Powertrain for Compact SUV

Hironari Kiriseko･Atsushi Kobayashi (Nissan Motor)

The third-generation 100% electric-drive hybrid powertrain (e-POWER) has been developed for compact SUV. This third-generation hybrid powertrain delivers top-level quietness and acceleration performance, along with high fuel efficiency.

Development of battery technology for powerful driving of premium minivans

Satoshi Murakami･Takashi Honda･Ryo Sakamoto･Kenji Hosaka･Shozo Ishimoto･Norihiko Hirata (Nissan Motor)･Tatsuhiko Kawasaki･Kiyoharu Hosoya･Eiji Seki (Vehicle Energy Japan)

Nissan has introduced 100% electric drive hybrid systems from small cars to minivans. To meet the need for high-output batteries for use in large minivans, we developed a new battery cell and designed a balance between heat generation and cooling performance to realize a high-output battery system that balances cost, weight, and durability.

Development of the Third Generation 100% Electric Drive Hybrid Powertrain for Large Minivan

Shinichi Suzuki･Naohiro Yoshida･Shin Ishizaki (Nissan Motor)

The new large minivan was developed with the aim of achieving a high-level balance between driving pleasure and passenger comfort. By improving fuel efficiency and quietness through the third-generation 100% electric drive hybrid powertrain (e-POWER) and by adopting new technologies to accommodate larger vehicle sizes, it delivers excellent driving performance, comfort, and fuel efficiency.