Italian supplier Marily Submit a new file in Dritev Platform made of silicon carbide adapters For power electronics for electric vehicles operating under circuits 800 volts. With these two techniques, Marily Reduce its size and weight And on top of that increase its efficiencya crucial parameter in the case of electric vehicles.
The platform was first presented at the international VDI conference “Dritev” (Vehicle Transmission Electrification), held in Baden-Baden, Germany, between July 6-7, 2022, where Marelli also demonstrated other electrification technologies.
Thanks to its excellent performance at high temperatures and voltages, silicon carbide (SiC) is recognized as a very suitable technology for power electronics. So it is particularly suitable for use in Investors. These are responsible for converting the alternating current that feeds the synchronous electric motors from the direct current to the battery. The frequency of the alternating current determines the speed at which the motor rotates. This device uses high standard power electronics, capable of providing the voltage and amperage required by the motor at all times. The higher the power of the inverter, the higher the efficiency and reliability of the electric vehicle.
In addition, the new Marelli inverter platform integrated into 800 volt electrical circuits. By raising the voltage, it is possible to increase the recharging power, thus demystifying one of the big drawbacks that electric vehicles should currently be a purchase option for users.
the new Inverter platform 800 volts from Marelli It also features an improved thermal structure, thanks to innovative structural designs and cooling channels that significantly reduce the thermal resistance between the SiC components themselves and the coolant. This is critical in high power applications, where heat removal from the power unit is important.
The result of the union of these technologies is that the new transformers introduced by Marelli It can extract more energy from the battery more efficiently and ensure a significant increase in the autonomy of the vehicle. It also ensures faster load times and better acceleration. Finally, a smaller, more efficient inverter allows the battery to be reduced in size, providing cost, weight, and sustainability advantages.
Razvan Panati, Director of Marelli Power Electronics, stated that the new inverter platform “based on 800V silicon carbide power unit technology allows it to serve applications where performance is improved and efficiency is improved.”
In addition to hardware, Marily The program develops for all inverters within the company which is located in the electrical control unit located in the same inverter box. The software complies with AUTOSAR (Automotive Open System Architecture) standards and is specifically intended for diagnostic standards required by vehicle manufacturers. Functional safety requirements comply with the ASIL D (Car Safety Integrity Level D) standard.
The new 800 Volt SiC platform complements the range of inverters that Marelli has developed over the past 10 years and Which also includes 400V solutions Based on both IGBT (insulated gate bipolar transistor) and silicon carbide, as well as gallium nitride (GaN).
The Marelli Group was created in 2019 as a result of the merger between Italian supplier Magneti-Marelli (formerly owned by Fiat-Chrysler) and Japanese company Calsonic Kansei (whose roots go back to Nissan). At the end of November 2020, the company announced its intention Electric motor assembly in CologneGermany, as of 2021. To this end, an 18,000 square meter production line has been installed in the Köln-Nehl district, near the German Ford factories.
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