Patent ID: 11879929
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. A test device for automatically testing functionality of a switching member including at least one electrically switchable switching element, a switching state of the at least one electrically switchable switching element being influenceable via a control input of the at least one electrically switchable switching element and via a control signal generatable by a controller and output to the control input, the at least one switching element including a Silicon Carbide (SiC) power semiconductor or a Gallium Nitride (GaN) power semiconductor, the test device being configured to output an activation signal to the controller, the controller being configured to change the control signal, the activation signal being configured to induce a test signal as the change to the control signal and induce a disconnection pulse as the test signal; record, in response to the disconnection pulse, the test device a voltage drop across the at least one switching element; carryout a comparison between an indicator, encoding the voltage drop recorded across the at least one switching element, and a reference, encoding an expected response to the control signal as changed; and generate, depending on a result of the comparison, a status signal which encodes the functionality of the at least one switching member; and switch off the SiC power semiconductor or the GaN power semiconductor via the disconnection pulse, while the SiC power semiconductor or GaN power semiconductor conducts current in a reverse direction.