New drive solutions for modern BEVs
Most battery electric vehicles currently in use have primary and/or auxiliary e-axles that integrate the e-motor, transmission, and inverter.
However, this results in lower efficiency due to losses at low speeds. New designs, such as the skateboard architecture, address this challenge, and enable cost-effective and efficient electric vehicles.
As part of the mobility transition, conventional internal combustion vehicles are being replaced by battery-only elec-tric vehicles (BEVs). Currently, the most popular driving systems for BEVs are integrated drive modules, also known as e-axles. Unlike conventional axles, they integrate the electric motor, the inverter, and the transmission. Their thermal management also differs significantly from that of conventional axles.
One of the most critical systems in the e-axle is the traction inverter, as its specific characteristics have a strong influence on the overall performance and efficiency of the vehicle. The most common configuration today is a two-stage B6 configuration because it requires fewer switches and is easier to control.
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