Patent ID: 11909308
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The circuit of claim 1, wherein after the power conversion circuit is powered on, in the first relays in the plurality of first start circuits, a resistance of the first resistor correspondingly connected in parallel to the first relay closed at a moment T1 is greater than or equal to the resistance of the first resistor correspondingly connected in parallel to the first relay closed at a moment T2, and the moment T1 is earlier than the moment T2; and in the second relays in the plurality of second start circuits, a resistance of the second resistor correspondingly connected in parallel to the second relay closed at a moment T3 is greater than or equal to the resistance of the second resistor correspondingly connected in parallel to the second relay closed at a moment T4, and the moment T3 is earlier than the moment T4.