Battery Simulation and Testing
ESYS - DC power electronics for battery simulation and testing
ZF offers DC power electronics based on SiC for simulating and testing batteries. "ZF TS esys" (esys = Energy System) can simulate a wide variety of battery models in a highly dynamic manner at different voltage levels - from a simple internal resistance model to complex R-L-C models.
This makes ESYS an important component of e-mobility test benches. In addition to simulating a battery, ESYS can also be used to test batteries. The product portfolio covers testing from the cell to the battery pack.
Our DC sources/sinks can be used for the following areas:
- Simulation of batteries
- Battery testing
- Tests of power electronics
- Fuel cell tests
In the field of battery simulation, our products have, among other things, the following characteristics to ensure the effective and efficient simulation of batteries:
- 21 kW to 1,000 kW nominal power
- Standardized, compact design -> 250 kW system on a width of 1.8 m
- Ready for the future with max. 1,500 VDC
- Additional measurement ranges for current and voltage (1:10 & 1:4) for increased flexibility and accuracy
- Freely configurable, real time simulation models 2nd order for simulating the electrical battery behavior or any other electrical network with 40kHz
For battery tests, we can cover all battery types and future test requirements with a broad portfolio:
- Pack-, module- and cell tester from 2.5 kW to 1,000 kW
- Dynamic power > 1MW/ms
- Parallel connectivity for enhanced flexibility
- High measurement- and control accuracy
- Very robust and reliable -> Already over 3,000 channels in use worldwide
Energy Efficiency made by ESYS
Energy efficiency, resource savings and a low ecological footprint play a crucial role in the planning and operation of test facilities in order to be able to sustainably develop and test the mobility of tomorrow.
ZF Test Systems offers a proven and widely used energy-efficient solution with its ESYS.INV + ESYS.DCU/ ESYS.CMT combination.
The ESYS.INV grid-side inverter supplies several galvanically isolated DC-channels via a common DC link. In this case, the feed-in power can be designed to be much smaller than the total DC output power. For large test fields, the operator benefits from a simultaneous factor of approx. 30%. This means that the feed to the mains must be designed for only 30% of the total power of the DC output channels!
The energy is moved between the different DC output channels by means of a common DC link and the power supply only has to compensate for the missing power.
Key Benefits:
- Compact design due to lower feed-in power
- AC-in power can be dimensioned smaller than total DC-output power
- Lower investment in media supply
- Energy saving due to power distribution via DC-Link
- SiC technology leads to extremely low switching losses
- Only power losses must be covered
- Reduction of the energy fed back to the grid provider
- Lower power flow via ESYS.INV and thus lower losses
- ESYS.INV Inverter available in different power classes for maximum flexibility
- Independent galvanic isolated channels -> more than 10 galvanic isolated channels per inverter possible!
Energy Efficiency