Regenerative Electronic Load — Elektro-Automatik
Elektro-Automatik released the EA-ELR 10000 30 KW Programmable Electronic Load. This latest generation regenerative electronic load (ELR) combines its high-efficiency programmable DC load with an equally efficient inverter (regenerative) output stage, returning up to 95% of the energy used in the test back to the AC grid. A master-slave bus provides for parallel connection of multiple ELR 10000 units to a maximum input power rating of 1080 KW. The ELR 10000 provides a wide range of programmable functions to simulate complex testing, such as electric vehicle traction motors, battery discharge testing, PV simulation per EN 50530 and MPP tracking, and others. An FPGA-based function generator with a value table of up to 3,276 points enables creation and operation of load profiles that include sine wave, square wave, sawtooth, and ramp functions. The device can easily reproduce nonlinear internal resistances, such as those of batteries or LED chains. Sequences can be loaded from and saved to a standard USB drive on the front panel. The ELR features DC-simulated load input voltage ratings of 60 V to 2,000 V and current ratings from 40 A to 1,000 A. DC inputs and AC power (342 to528 V, 3-phase, 50/60 Hz) are galvanically isolated, as are the built-in USB, Ethernet, and analog control interfaces. Cooling is provided by temperature-controlled fans with an optional water-cooling feature available.