Advanced Inverter Topologies Drive Efficient BEV Architectures

Ayman Ayad･Philip Brockerhoff (Vitesco Technologies)･Takuya Mimori (Vitesco Technologies Japan)

The new wide-bandgap technology such as Silicon Carbide (SiC) and Gallium Nitride (GaN) have recently entered the market of standard Silicon (Si) semiconductors as the main technology within automotive High-Voltage electronics. The new technologies enable advanced inverter topologies such as multi-level and multi-phase for automotive applications. In this presentation, standard and advanced inverter technologies and topologies will be introduced by analyzing system efficiency and cost.

Next Generation Cells for Future Battery Systems

Hendrick Löbberding･Matthias Rudolph･Jannis Kuepper･Michael Stapelbroek (FEV Europe)･Thomas Hülshorst (FEV Group)

Solid-state battery cells are the "next big thing" in electric vehicle technology to solve range anxiety, fear of hazardous incidents, and lacking charge infrastructure. However, technical maturity, production cost, and performance challenges remain. This presentation provides an overview of the state-of-the-art landscape for different cell chemistries and focuses on volumetric energy density as a key attribute for future cell roadmaps. Solid state cells can deliver the needed energy density, while the integration into the pack is rather cell-chemistry specific. Moreover, lesser energy density requirements may choose sodium-ion or LMFP chemistry as a cost-efficient alternative.

車載パワーネットの電力経路分散による低損失化方法の検討

中野　洋・金川　信康（日立製作所）・十文字　賢太郎（日立Astemo）

ゾーンアーキテクチャ対応車載パワーネットの電源幹線の軽量化を目的に，パワーネットの局所的な電流集中を回避する電流分散手法を検討した．車両の各ゾーンの負荷電流に応じて各ゾーンへの電力供給経路をグラフ理論により最適化するアルゴリズムを提案し，電気的モデルとの連成シミュレーションにより評価した結果を報告する．