The Siemens Drive Technologies Division has signed an agreement with Semikron International, under which Siemens will take over Semikron’s VePOINT subsidiary, and the two companies will increase their cooperation in the field of EV power electronics. VePOINT’s technology is meant to complement the Siemens range of products by adding systems with attractive power densities and power/weight ratios.
VePOINT’s proprietary Semikron SKiN technology features a flexible foil that’s used in place of wire bonds. In combination with sinter technology, this improves inverter power density, which Semikron says allows a 35% reduction in inverter volume. The driver interface uses springs contacting the surface of the flexible foil.
The VePOINT VPID unit integrates a three-phase inverter and a DC-DC converter, and features a volume of 5.5 liters, a weight of 8.5 kg, and a power density of 20 kW/l. The modular VPID unit can be configured as an integrated inverter and DC-DC converter, a standalone inverter, or a standalone DC-DC converter. It’s designed to be scalable, covering applications from 30 kW up to 100 kW in harsh environments.
Jörg Grotendorst, CEO of the Siemens Inside e-Car Business Unit, said, “The cooperation with Semikron and the acquisition of VePOINT are important milestones for us on our way toward achieving a high degree of integration in the entire drive train. This widens the Siemens range of motors, inverters, speed sensors and gearboxes by adding further innovative e-Car power electronics.”