Patent ID: 11923769
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 8:
9. The control system according to claim 1, wherein each of the first power supply drive circuit and/or the second power supply drive circuit is a bootstrap power supply drive circuit, and the bootstrap power supply drive circuit comprises a bootstrap capacitor, a bootstrap diode, and a drive circuit; one end of the bootstrap capacitor is separately connected to an output end of the bootstrap diode and a first connection end of the drive circuit, the other end of the bootstrap capacitor is separately connected to a second connection end of the drive circuit and a bridge arm midpoint, an input end of the bootstrap diode is connected to a power supply, a third connection end of the drive circuit is connected to the sampling control circuit, and a fourth connection end of the drive circuit is connected to an upper bridge arm; the power supply is configured to:
when the sampling control circuit controls a lower bridge arm connected to the upper bridge arm in series to be turned on, charge the bootstrap capacitor to implement charging of the power supply drive circuit;
the sampling control circuit is further configured to:
when charging duration of the bootstrap capacitor reaches target duration, control the lower bridge arm to be turned off to complete charging of the power supply drive circuit, wherein the target duration is the first target duration or the second target duration; and
after the power supply drive circuit completes charging, control the power supply drive circuit to turn on the upper bridge arm.