Patent ID: 11885844
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for detecting insulation state in a conversion system, wherein the conversion system includes an excitation source, a converter having an input end coupled to the excitation source, a connection element coupled between an output end of the converter and a reference point, and a coupling impedance having a first end coupled to the excitation source and a second end coupled to the reference point, the method for detecting insulation state including steps of:
S1, controlling at least one main power switch of the converter not to switch;
S2, detecting a pulse current signal of the connection element; and
S3, processing the pulse current signal and outputting a partial discharge information, wherein the partial discharge information indicating an insulation state of an isolating transformer in the converter.