The emulated currents on a testbed and the signals measured in a real vehicle are different, mostly due to the high dynamic background noise (aka ripple) of the inverters. Depending on the noise level, the lifetime of the battery may be affected, or a component may fail from its stable operation.
This is why OEMs come up with specific testing standards like LV123, a testing directive, defined by European OEMs, focusing on the electrical characteristics of HV components in electric vehicles. Our AVL Ripple Generator also fulfills other standards like: LV124, LV148, VW80300, VW80303, ISO 16750, MBN11123 and ISO 21498.
The AVL Ripple Generator™ was designed to add mid-frequency AC currents with up to 250 kHz to an existing DC bus. Additionally, the AVL E-STORAGE BTE™ DC supply features an internal ripple emulator to cover the low-frequency range. Together they provide an outstanding solution to emulate the inverter behavior at the test item and may also be used as a powerful broadband signal source for impedance measurements.
- Ripple generation from 300 Hz to 250 kHz
- Amplitude up to 200 App
- AVL-patended coupling network and current control
- Easy integration to AVL automation systems AVL PUMA 2TM, AVL LYNX 2TM
- Easy installation in existing testing equipment and tested compatibility with AVL E-STORAGE DC supplies and AVL Cell TesterTM
| Technical Data | Unit |
|
Frequency range |
300 Hz – 250 kHz |
| Max. current | 200 App |
| Max. voltage | 150 Vpp |
| Waveforms | Any waveform (with DAC) |
| Sum height | 177 mm + 132 mm --> 7 HU |
| Width | 442 mm |
| Lenght | 507 mm |
| Weight | 22,7 + 16,6 --> 39,3 kg |
Standardization
Standardized for: LV123, LV124, VW80300, VW 80303, MBN11123, PV8450, ISO 16750 and ISO 21498.
Parallelization
Parallelization of up to six several ripple generators to emulate larger inverter disturbance currents.
Excitation of Different Waveforms
For example, for excitation of a frequency spectrum of defined frequencies and for long-term tests of batteries or for playback of recorded driving profiles.
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