GRADIENT MAGNETIC FIELD POWER SOURCE DEVICE, AND GRADIENT MAGNETIC FIELD POWER SUPPLY CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a gradient magnetic field power supply device reduced in switching loss without the sacrifice of responsiveness in a gradient magnetic field power supply configured by a series of inverter blocks.SOLUTION: An inverter part 11 including inverter blocks configured in multistage is provided with switching means 13 for connection-switching of a predetermined block separably in a certain order. A control part for controlling an inverter part 11 is provided with processing means for determining whether or not a gradient per unit hour is increased or decreased on the basis of a gradient of a target gradient magnetic field coil current waveform, controlling the switching means according to the increase/decrease determination to conduct connection-switching of the number of stages of inverter blocks and stopping the supply of a switching control signal to the separated inverter blocks.