Header: VES-48V-series of the e-mobility solutions of KRATZER AUTOMATION


Universal System for Battery Simulation and Testing

48V onboard power supply systems offer new technical possibilities in electrification of vehicles. From electric powered components via effective start-stop-systems up to mild-hybrid powertrains.

The 48V series vehicle energy system VES serves to test energy storage, electrical components and powertrains with 48V board net on the test bench.

Wide range of use

  • Highest dynamic for all test bench purposes
  • Universal system for battery simulation and battery test with dedicated adjustments
  • Integrated simulation module for simulating networks up to 2nd order (resistors, capacities, inductances)
  • Regenerative network connection, very low power quality impact
  • Isolation between power supply and load side
  • Power:
    • VES 48V, 21kW, current 350A (500 A 30s)
    • VES 48V, 32kW, current 650A
  • Parallel operation (optional)
  • Complying to SELV standard
  • Comprehensive safety functions
  • Available as mobile 19” rack with air-cooling
  • Independent running system with integrated control panel
  • Remote control via bus

High voltage stability

The control mode for the drive test is optimized for high voltage stability during high load jumps. In case of a very steep load jump from 0% to 90% of the VES nominal current within 1   ms the voltage deviation is less then 1% of the nominal output voltage.

Integrated Ripple generator

For the simulation of AC components the VES contains a low- and a medium-frequency ripple generator. The AC component is modulated on the output voltage or the output current. So for example low-frequency mains voltage proportions (0,1 ... 300   Hz) or medium-frequency (300   Hz ... 15   kHz) inverter repercussions can be simulated. Both signals can be superimposed.

Automation and HIL simulation

For the communication between measuring equipment and automation systems we provide all common bus systems like CAN bus. For simulation purposes you can use onboard models or integrate own models. These models can be calculated on FPGA boards with high transmission rate. Therefor the behavior of reproduced components will be calculated in real-time and as a current or voltage setpoint transmitted to the vehicle energy system. Supported by a 40   kHz high speed data interface.

The tool chain supports model generation with MATLAB / Simulink.