Inductive Filtering Device with Toric Cores for Recirculation Currents

The patent divides the filtering function into two distinct parts: common-mode filters distributed in each converter and differential-mode filters specific to each phase. This segmentation allows each filter to be optimized independently, reducing the overall component size and weight while maintaining effectiveness against recirculation currents.

The patent implements differential-mode filters specifically targeted at each phase rather than using large common-mode inductors for all phases. This local quality approach allows each phase to have its own optimized filtering solution, significantly reducing the total weight and volume of inductive components needed to handle recirculation currents.

The patent enables dynamic reconfiguration of the electrical architecture by eliminating fixed coupling inductors that would constrain the number of converters. The distributed filtering approach allows converters to be dynamically connected and disconnected in parallel without being limited by saturation constraints of large coupling inductors, enabling real-time adaptation to varying power needs.

The patent creates a universal filtering solution where each converter has its own common-mode filter and phase-specific differential-mode filters. This universal approach allows any number of converters to be connected in parallel while maintaining filtering effectiveness, as each converter independently handles its own recirculation currents through its dedicated filters rather than relying on shared coupling inductors.