Patent ID: 11909353
Assignee: KEHUA HENGSHENG CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 9:
10. The photovoltaic power generating system of claim 9, further comprising:
a second detecting module, having a first terminal coupled to a grounding electrode on the DC side, and a second terminal coupled to the ground, for generating a first sampled current; and
a third detecting module, having a first terminal coupled to a non-grounding electrode on the DC side, and a second terminal coupled to the ground, for generating a second sampled current;
wherein the controller is further arranged to determine if the ground-fault occurs in the DC side before the AC power is connected to the grid and to determine if the ground-fault occurs in the DC side and the AC side when the AC power is connected to the grid according to the first sampled current and the second sampled current.