Abstract

According to the design requirements of high-field (HF) magnetic resonance imaging (MRI) superconducting magnet power supply, the bidirectional dual-active-bridge (DAB) DC-DC converter is analyzed, designed and developed. This paper presents the overall topology design of the middle stage DAB converter. In turn, the single channel DAB converter is designed and analyzed in detail, including magnetic component design, control system design and power device selection. The results show that the designed converter can meet the system requirements.

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