ABB is launching a new package tailored for electric buses, consisting of the AMXE250 motor and HES580 inverter. The new propulsion package is designed for a more efficient, reliable, and readily available solution for the industry.
Compared to conventional 2-level inverters, the HES580 achieves a substantial reduction of up to 75 percent in motor harmonic losses, significantly minimizing heat dissipation and maximizing energy conservation.
The key to this superior performance lies in its innovative 3-level architecture. Unlike 2-level inverters, which switch between two voltage levels (dc+ and dc-), the HES580 introduces a third voltage step: the neutral. This addition effectively halves the voltage step during each switching operation, resulting in reduced current ripple and subsequently lower harmonic losses.
The HES580 not only demonstrates up to 12% fewer motor losses on typical drive cycles compared to conventional 2-level inverters, but also benefits the AMXE250 motor by extending its lifespan and enhancing its reliability. By mitigating harmonic effects and minimizing stress on motor windings, this technology offers sustained performance and longevity of the entire electric drivetrain.
Additionally, the AMXE250 stands out as a compact, permanent magnet synchronous motor designed for high-efficiency propulsion. The motor also offers high torque density for improved dynamic performance, as well as a quieter operation for increased passenger comfort. The HES580 and AMXE250 have been designed to offer flexibility, allowing them to be placed further away from each other, providing operators with the possibility to optimize space.
The package can be quickly installed into a vehicle due to its simple parameter setting, commissioning, and start-up capabilities.
“Electrifying buses in this way is a key part of bringing sustainable, clean public transport,” said Fabiana Cavalcante, global head of Mobile e-Power at ABB. “We’re thrilled to provide future-proof solutions that helps the industry to meet their sustainability and performance objectives.”
Filed Under: Technology News