Patent ID: 11863065
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method for controlling a power module according to claim 1, wherein controlling each cell further comprises:
for the k-th cell among the N cells, after a control period begins, detecting whether the k-th cell has a fault;
if no, the k-th cell selects to enter the modulation mode;
if yes, and if the fault is an open circuit fault of the bidirectional switching unit and the number of cells in the non-controlled rectifying mode in the N cells is less than M2, the k-th cell selects to enter the non-controlled rectifying mode, otherwise the system stops; and
if yes, and if the fault is not an open circuit fault of the bidirectional switching unit and the number of cells in the bypass mode in the N cells is less than M1, the k-th cell selects to enter the bypass mode, otherwise the system stops.