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Power Electronics Europe News
DC/DC converter can change conversion direction

It can seamlessly change conversion direction from high voltage DC sources, powered by solar or wind, to 48V DC batteries and vice versa, says the company.

Its addition to the EZA series extends the high voltage range to cover 260 to 400V DC and the lower voltage range to 36 to 65V DC. The operating temperature for the series has been increased to -10 to 50°C. The converter also includes a double- sided protective board coating and long-life dust resistant fans.

The 2500W digitally controlled, compact 1U power supply is designed for energy storage systems with rechargeable batteries. As well as high voltage DC sources, powered by solar or wind and 48V DC batteries, it can also be used in lithium-ion battery testing and regenerated energy from robots, cranes, autonomous ground vehicles and lifts. It can replace large power resistors currently used for lift braking and use that previously dissipated energy to charge batteries. Stored energy can be used to either provide peak power for high torque demands or as battery back-up for power cuts.

The output voltage and current can be programmed and monitored using the RS-485 communications port. Multiple units can be operated in parallel by using the RS-485 interface to set units for “droop mode” current share. Other features are alarm signals, remote on/off and under- and over-voltage functionality. The high voltage (grid) to low voltage (battery) isolation is 3,000V AC, grid to ground 2,000V AC and battery to ground 500V AC.

The DC/DC converter measures 423 x 400mm and 43.6mm (1U) high.

It is certified to the IEC/EN/UL 60950-1 and IEC/EN/UL 62368-1 safety standards with CE marking for the Low Voltage, EMC and RoHS Directives. It carries a five-year warranty.


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