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Abstract #1571

Control synchronization of power supplies and gradient amplifiers for better utilization of energy storage in MRI scanner

Yash-Veer Singh1, Juan A Sabate1, Ruxi Wang1, Viswanathan Kanakasabai2, Krishna Mainali1, and Huan Hu1

1GE Global Research, Niskayuna, NY, United States, 2GE GR JFW Technology Center, Bengaluru, India

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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