Magnetic resonance system and power supply device for magnetic resonance system

A power supply device for a magnetic resonance system, comprising:

• a DC power source;
• a full-bridge circuit coupled to the DC power source and having a first bridge arm and a second bridge arm, the full-bridge circuit being used to output a periodic voltage signal through the first bridge arm and the second bridge arm;
• a resonant circuit, having a symmetrical circuit structure, wherein two symmetric input terminals are directly connected to the first bridge arm and the second bridge arm, respectively, so as to receive the periodic voltage signal, wherein the resonant circuit comprises a first inductor, a first capacitor, a second capacitor and a second inductor, one end of the first inductor being directly connected to the first bridge arm, one end of the second inductor being directly connected to the second bridge arm, the other end of the first inductor being connected sequentially in series to the first capacitor and the second capacitor, and then connected to the other end of the second inductor, the other ends of the first inductor and the second inductor serving as the two symmetric output terminals, respectively, and a connection node of the first capacitor and the second capacitor being grounded, and wherein the first inductor and the second inductor serve as the two symmetric input terminals;
• and
• a boost circuit, connected to two symmetric output terminals of the resonant circuit so as to receive the periodic voltage signal modulated by the resonant circuit, the boost circuit being used to provide a boosted voltage, and the boosted voltage having an amplitude greater than the amplitude of the periodic voltage signal, wherein the power supply device is configured to provide power to one or more loads of a radio frequency control link of the magnetic resonance system.