MRI GRADIENT POWER SYSTEM WITH ADD ON ENERGY BUFFER

摘要

The present invention relates to a power supply system (311) for supplying current to a gradient coil (303) of a magnetic resonance imaging system (100), the power supply system (311) comprising: an electrical power supply (309) to supply a first voltage to a gradient amplifier (307) for driving the gradient coil, the gradient amplifier output being connected to the gradient coil (303); an energy buffer having an input connected to the electrical power supply (309), the energy buffer being configured to supply second voltage to the gradient amplifier (307), the energy buffer being in parallel to the gradient amplifier (307) and the electrical power supply (309), the energy buffer comprising a voltage converter (313) configured to control the second voltage as to compensate for a variation in the first voltage resulting from the driving of the gradient coil (303).

主权项

1. A power chain comprising a power supply system, an energy buffer and a gradient amplifier for supplying current to a gradient coil of a magnetic resonance imaging system, the power supply system comprising:
the electrical power supply to supply a first voltage to the gradient amplifier for driving the gradient coil, the gradient amplifier output being connected to the gradient coil; the energy buffer having an input connected to the electrical power supply, the energy buffer being configured to supply a second voltage to the gradient amplifier, the energy buffer being in parallel to the gradient amplifier and the electrical power supply, the energy buffer comprising a voltage converter configured to control the second voltage as to compensate for at least part of a variation in the first voltage resulting from the driving of the gradient coil.