Highly compact inverter for direct feeding into the medium-voltage grid

摘要

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have developed an inverter based on new types of silicon carbide (SiC) transistors with high blocking voltages so the inverters can be connected directly to the medium-voltage grid. The high control dynamics of SiC inverters can take on grid-stabilizing tasks and act as active power filters to compensate for harmonics in the medium-voltage grid. SiC inverters can achieve high power densities, resulting in a compact design.