Marelli launches 800 Volt Silicon Carbide inverter platform for EVs

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The new inverter platform presented by Marelli can extract more energy from the battery at higher efficiency and secure a significant increase in the driving range of a vehicle. It also ensures faster charging times and better acceleration coupled with reduced battery size which delivers cost, weight and sustainability benefits, the company said. ETAuto July 08, 2022, 10:32 IST

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New Delhi: Global automotive supplier Marelli has developed a new complete platform of 800 Volt Silicon Carbide (SiC) inverters, ensuring improvements in terms of inverters' size, weight and especially efficiency, which is a critical parameter in electric vehicles.

Due to its excellent performance at high temperature and high voltage – enabling smaller, lighter and more efficient solutions – Silicon Carbide is recognised as a technology of choice for power electronics, the company said in a release.

Thus, it is particularly suitable for inverters, which convert DC (Direct Current) power derived from batteries to AC (Alternating Current) electric power used in electric vehicles' motors. Marelli's new 800 Volt inverter platform also features an optimised thermal structure, thanks to innovative structural and cooling channel designs that drastically reduce the thermal resistance between the SiC components themselves and the cooling liquid. This is a critical aspect in high power applications, where the heat rejection of the power module is significant.

Among the main advantages, the new inverter platform presented by Marelli can extract more energy from the battery at a higher efficiency and secure a significant increase in the driving range of a vehicle. It also ensures faster charging times and better acceleration coupled with reduction in battery size which delivers cost, weight and sustainability benefits.

"The new inverter platforms based on our 800 Volt Silicon Carbide power module technology allows to serve applications where energy use is optimized, the performance is maximized and efficiency is dramatically improved. With a complete range of modular solutions, we are able to offer to our customers more flexibility in terms of packaging, cooling system design and energy storage," Razvan Panati, Head of Power Electronics Technology of Marelli's Vehicle Electrification Division, said.

The software for all the inverters in Marelli's range is developed in-house by the company and is hosted by an Electric Control Unit located in the same inverter case. The software is compliant with AUTOSAR (AUTomotive Open System ARchitecture) standards and specifically customized for the diagnostic standards required by car makers. Functional Safety requirements are compliant to ASIL D (Automotive Safety Integrity Level D) standard.

The new 800 Volt SiC platform completes the inverter range offered by Marelli, resulting from over ten years of experience, that includes also 400 Volt solutions based both on IGBT (Insulated Gate Bipolar Transistor) and Silicon Carbide, and Gallium Nitride (GaN)-based converters in development.

Also Read:
Mahle develops electric traction motor
According to the company, the new development is suitable for passenger cars and commercial vehicles as well as construction machines and tractors.
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