Patent ID: 11864302
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 8:
9. The method of claim 8, wherein the first bridge leg or the second bridge leg includes at least two switch transistors distributed in series, and controlling the phase relationship between the bridge leg voltage and the output current of the inverter bridge to control the frequency of the driving signal of the inverter bridge comprises:
obtaining an output current and a bridge leg voltage of the inverter bridge;
generating a phase signal based on the bridge leg voltage and the output current, and generating a first control signal based on the phase signal;
obtaining an output voltage of the rectifier circuit, and producing a second control signal based on the output voltage of the rectifier circuit; and
generating a driving signal for the switch transistors for driving the switch transistors to operate based on the first control signal and the second control signal.