High-voltage test bench
While in use, the high voltage test bench has continuously been refined and allows the characterization of the switching and conduction behavior of individual switches and diodes in both hard- and soft-switching operation.
Adjustable voltages of up to 12 kV and currents up to 5 kA can be generated. The experiments can be carried out in a temperature range from -10 up to +150°C. This modifications allow measurements under real conditions.
The high-voltage test bench allows testing the DUT (device under test) through three tests:
- double pulse test
- conduction test
- blocking test
The double pulse test allows you to characterize the DUT in the hard-switching operation and is used to examine the in- and off behavior. Furthermore, dynamic losses can be observed and heat regulations allow the characterization of the DUT at different temperatures.
With the conduction test, the DUT can be tested under maximum current flow. At present, a hard shutdown can be realized without voltage applied to the experimental set-up.
The blocking test is used to investigate the locking behavior of a DUT. For this, a maximum voltage is configured. When the maximum current is reached, the voltage will be lead across the discharge resistors. This mostly allows a trouble-free punch of the DUT.