公开(公告)号：US20250085368A1

公开(公告)日：2025-03-13

申请号：US18882443

申请日：2024-09-11

Applicant: GE Precision Healthcare LLC

Inventor： Hong Gu ,  Haiyuan Sun ,  Yue Ma ,  Yalu Wu ,  Chunlai Xiao

IPC: G01R33/36 ,  G01R33/385 ,  H01F27/28 ,  H02M1/00 ,  H02M7/48

Abstract: An isolated resonant power supply circuit, a magnetic resonance imaging system, and an air-cored transformer is provided. The isolated resonant power supply circuit is disposed within a scan room of a magnetic resonance imaging system. The isolated resonant power supply circuit includes: an inverter circuit, a resonant transformer circuit, and a rectifier circuit. The inverter circuit is connected to the resonant transformer circuit and is used for converting inputted direct current power into alternating current power and outputting the same to the resonant transformer circuit. The resonant transformer circuit is used for performing resonant conversion and transformation on the alternating current power, and then output the same to the rectifier circuit. The rectifier circuit is used for rectifying an alternating current output voltage outputted by the resonant transformer circuit into a direct current voltage for output, so as to supply power. The resonant transformer circuit comprises a variable capacitance circuit and an inductor, and by changing an input voltage of the variable capacitance circuit, an equivalent capacitance value of the variable capacitance circuit is caused to change.