Capacitors are a very common component in every electronic device. For use in electric vehicles, more and more capacitors are being used to buffer the DC link in power electronics such as inverters, DC/DC converters, chargers, etc. These devices generally draw high peak currents from the DC link periodically, which leads to a high load on the buffering capacitors.
To validate capacitors in such specific stress situations, IRS has developed and built a lifetime simulation facility for capacitors. The test system simultaneously stresses the components with temperature changes, a realistic DC voltage, and an AC current profile. All relevant parameters are continuously monitored over hours and days during this stress phase. Measurement data is stored at intervals, and deviations from expected behavior are logged immediately.
At certain intervals, the load is stopped and the capacitor parameters are precisely measured with an LCR meter and a leakage current measuring device.
Capacitors are a very common component in every electronic device. For use in electric vehicles, more and more capacitors are being used to buffer the DC link in power electronics such as inverters, DC/DC converters, chargers, etc. These devices generally draw high peak currents from the DC link periodically, which leads to a high load on the buffering capacitors.
To validate capacitors in such specific stress situations, IRS has developed and built a lifetime simulation facility for capacitors. The test system simultaneously stresses the components with temperature changes, a realistic DC voltage, and an AC current profile. All relevant parameters are continuously monitored over hours and days during this stress phase. Measurement data is stored at intervals, and deviations from expected behavior are logged immediately.
At certain intervals, the load is stopped and the capacitor parameters are precisely measured with an LCR meter and a leakage current measuring device.
Key Facts
Stress tests up to 10 ARMS continuously and 20 ARMS temporarily
Flexible current profiles selectable
Sine, triangle, and rectangle waveform at various currents
Precise characterization with LCR meter and leakage current measurement at intervals
Including temperature chamber to simulate realistic environmental conditions
Key Facts
Stress tests up to 10 ARMS continuously and 20 ARMS temporarily
Flexible current profiles selectable
Sine, triangle, and rectangle waveform at various currents
Precise characterization with LCR meter and leakage current measurement at intervals
Including temperature chamber to simulate realistic environmental conditions