Apparatus and system for zero current switching

Abstract

A modular power management system with a plurality of primary battery modules. In each primary module there a bridge circuit under the control of a primary controller and configured to operatively couple one or more battery cells to a primary winding associated with a primary flux guide. Each primary flux guide is coupled by magnetic flux with a secondary flux guide from a group of secondary flux guides to thereby form a set of complementary flux guides. The group of secondary flux guides is associated with a shared secondary winding, and where the secondary winding connected with a capacitor to thereby facilitate an oscillatory current. Each primary winding of each primary module shares the oscillatory current with the secondary winding. Each primary controller is configured to determine the voltage and current magnitude and phase, and control conduction of the primary bridge to manage the current of the one or more battery cells.