Converter is designed for energy storage & recycling

In addition to small to medium sized energy storage, applications also include lithium-ion battery testing as well as the utilisation of regenerated energy from robots, cranes, autonomous ground vehicles and lifts. For example, the converter can replace the large power resistors currently used for lift braking and instead use that previously dissipated energy to charge batteries. That storage can then be used to either provide peak power for high torque demands or as battery back-up for power cuts.

The EZA2500 operates from, or supplies, either a 36-60V or a 300-380V DC voltage range with maximum currents of ±52A or ±7.8A, respectively. The output voltage and current can be programmed and monitored using the RS-485 communications port. For larger systems, multiple units can be operated in parallel by setting the unit to ‘droop mode’ current share via the RS-485 interface. A variety of alarm signals are also accessible, as well as remote on/off and under/over voltage functions. The converter will operate at full load in an ambient temperature of -10 to +40oC.

Internally, the twin DC/DC converter design enables continuous transitional switching between charge and discharge states to maintain the stability of the bus voltage. Operating efficiencies of up to 94% are achieved with the use of full digital control. The converters are isolated, 3kVAC from the high voltage (grid) to low voltage (battery) inputs/outputs, 2kVAC from grid to ground and 500VAC from battery to ground.

The EZA2500, which measures 43.6x423x400mm, is UL/CSA 60950-1, EN 60950-1 certified and carries the CE mark for the LVD and RoHS2.