Innovative efficient gradient coil driver topology

  title={Innovative efficient gradient coil driver topology},
  author={Pavol Bauer and J. A. M. Ferreira and S. Spanjaard and Matthew J. Hollander},
  journal={Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.},
  pages={1838-1843 Vol.3}
In a magnetic resonance imager, or MRI device, so called 'gradient coils' are used for generating time and place dependent magnetic field pulses. The current pulses through this mainly inductive component should preferably be block shaped. Because block shaped current pulses require infinite high voltage over the coil clamps, physical limitations require blocked shaped current pulses to be approximated by trapezium shaped current pulses. The challenge in the gradient coil driver is to create… CONTINUE READING