The magnetic resonance imaging (MRI) gradient driver
is a high-performance inverter that provides large peak currents, >1000A,
for the gradient magnetic fields used for imaging. MR system has capacitors for
energy storage at the amplifier stage input voltages. Volume/weight reduction
in energy storage elements is one of the challenging issue in design of compact
and efficient MRI gradient system. It is possible to reduce capacitance value
in energy storage elements by synchronizing the control of the gradient driver different
subsystems. Control synchronization is achieved by providing reference value of
coil current simultaneously to the different controller of the MRI system.
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