Coreless transformer, isolation type non-magnetic switching power supply and magnetic resonance imaging system

The invention relates to a coreless transformer, an isolation type non-magnetic switching power supply and a magnetic resonance imaging system. The isolation type non-magnetic switching power supply comprises a first power unit and a second power unit, wherein the second power unit is electrically coupled with the first power unit through any one of the coreless transformer, a piezoelectric type transformer and at least two capacitance isolators. The isolation type non-magnetic switching power supply is arranged in a scanning room of the magnetic resonance imaging system to be used for providing power for at least one of a radio-frequency amplifier, a gradient amplifier and a gate driver of the magnetic resonance imaging system. The isolation type non-magnetic switching power supply generates near-zero electromagnetic interference in work. Due to the fact that the isolation type non-magnetic switching power supply can be arranged in the scanning room of the magnetic resonance imaging system, a plurality of power supply cables arranged between an equipment room and the scanning room in the prior art are omitted, installation of the magnetic resonance imaging system becomes easy, and the cost of the magnetic resonance imaging system is reduced.