DC / DC bidirectional

The TDK-Lambda EZA11K-320240 series, specially designed for energy storage systems, has a remarkable nominal power of 11 kW at just 1 U height and converts a nominal input voltage of 240…400 VDC into 150…300 VDC output voltage for charging lithium-ion batteries. When the input voltage drops or stops, the converter seamlessly changes the operating mode and draws current from the batteries to stabilize the DC grid with the energy stored there. Typical fields of application for the EZA11 kW are storage systems for short-term load peaks, emergency backup supplies and for energy recovery during braking.

Up to five converters can be operated in parallel to provide powers of over 50 kW. The use of a fully digital control, SiCMOSFETs (silicon carbide) and innovative ferrite materials enables the converter to achieve efficiencies of up to 92%.