USE CASE: DC source as battery simulator
High-performance DC sources from ARADEX reproduce high-voltage batteries, supercaps and fuel cells or the DC voltage circuit of hybrid drives reproducibly.
Areas of application
- The DC source is used as a battery simulator in test benches for the drive components of hybrid and electric vehicles.
- Hardware-in-the-loop (HIL) environment for tests of individual components or all components in an electric drive train, e.g. electric motors, power electronics, energy stores, DC/DC converters, ...
- The highly dynamic DC source makes it possible to systematically test short voltage dips or voltage overshoots in the vehicle on-board system.
- Electric motors and hybrid drives are tested and validated by simulating different battery configurations.
The function modes
The battery simulator can be operated as a current source and also as a voltage source:
- For current regulated and voltage limited, the DC source comes, e.g. For charging batteries.
- Voltage-regulated and current-limited, the device simulates e.g. A battery, a supercap or a DC intermediate circuit in a hybrid drive.
- In addition to the two above-mentioned modes, a power limitation is also possible.
- Voltages of 10 V to 1050 V and currents of +/- 900 A are possible.
- Highly dynamic and precise regulation of the voltage: This prevents interfering interactions on the vehicle electrical system with rapidly changing loads and thus enables a realistic examination of the electrical loads and generators.
- The parallel operation of the VECTODRIVE inverters allows the power range to be individually adapted to the application. A symmetrization of the current is also carried out over all VECTODRIVEs used.
- Can be fed back by 2-quadrant operation, which minimizes energy consumption.
- Optional: potential separation between the mains side and the DC side ensure safe and effective operation.
Course of the actual current and the setpoint current at a load jump from 0 to 500 A DC.
The voltage must be kept constant at 250 V DC, even though the load is connected with a very low-inductive design and electromechanical switching contacts (contactor).