Patent ID: 9222997
Filing Date: 2015-12-29
Classification: G01R,H02M,H03F

Abstract:
1. A gradient coil power supply for a magnetic resonance imaging system, the gradient coil power supply comprising: at least two H-bridge circuits; wherein the H-bridge circuits are connected in series; wherein each of the H-bridge circuits supplies voltage of a first polarity when in a first switching state; wherein each H-bridge circuit supplies voltage of a second polarity when the H-bridge is in a second switching state; wherein each H-bridge circuit supplies no voltage when in a third switching state; wherein each H-bridge circuit supplies no voltage when in a fourth switching state; and wherein for a predetermined amount of time current is conducted through the H-bridge circuit in the third and fourth switching states, and a controller for controlling the switching of the H-bridge circuits, wherein the controller is adapted for: