April/May 2021

MARKET NEWS 7 www.power-mag.com Issue 2 2021 Power Electronics Europe The safe route to EV charging CDSR Series When it comes to EV charging, you don’t compromise on safety – and neither do we. Using the latest flux gate open loop technology, the LEM CDSR leakage current sensor ensures a high degree of safety for EV users by measuring AC and DC leakage current below 1mA at frequencies up to 2kHz. The LEM CDSR is also highly compact, keeping space needs to a minimum while remaining fully compliant with relevant standards. In addition, it provides highly flexible connectivity, offering both cable IC-CPD (mode 2) and AC wallbox (mode 3). • Single and three phase configuration • 32 Arms nominal current per phase • 0.5 mA accuracy at 6mA • Test winding and default output signal • Analog and digital communication (SPI) • Complies with application standards IEC 61851, 62955, 62752, UL 2231 www.lem.com Automotive supplier Marelli has launched its first power module for motorsports electric and hybrid traction applications completely developed in the company’s Corbetta facility, fully based on Silicon Carbide technology and using a new direct cooling solution for more efficient, compact and lighter inverters. Over the last years, Silicon Carbide has proven to be a technology of choice for high voltage and high temperature power electronics devices such as inverters, being able to grant excellent performance in hybrid and full electric applications. The use of SiC MOSFETs enables in fact smaller, lighter and more efficient solutions. These features become even more crucial when it comes to motorsports, where size, weight and efficiency are definitely major design drivers. The new module, called EDI (Enhanced Direct-cooling Inverter), was developed by Marelli Motorsport with the Fraunhofer Institute for Reliability and Microintegration IZM in Germany and features an innovative structural design that drastically reduces the thermal resistance between the SiC components themselves and the liquid coolant, thanks to a new baseplate- less solution. The result is an extremely compact power stage, which can exploit the efficiency advantage of Silicon Carbide, allowing vehicle designers more flexibility in packaging, cooling system design and minimized energy storage. In comparison to a Silicon-based design of the same rating, the new technology enables conversion efficiencies of up to 99.5 %, 50 % reduction in weight and size and 50 % higher heat dissipation into cooling system. Produced in the clean room of Marelli Corbetta facility (Italy), the EDI power SiC for Traction in Motorsport Motorsport SiC module produced in the clean room of Marelli Corbetta facility module has already successfully undergone a series of reliability qualification tests for motorsports mission profiles, to assess the robustness of the design when subjected to thermal cycles, switching tests, and pressure cycles. This new significant achievement is a further step forward within Marelli ongoing commitment in the field of electric powertrain, which is focused on developments both for motorsport and road vehicles applications and can rely on the company’s combined expertise in electric drives and thermal energy management systems. “Being at the forefront of motorsports technologies requires a continuous drive for innovation, also based on a constant research