Switchable Partial-Power DC-DC Converter Topology for Low-Loss Adaptation

The patent implements a dynamic topology control mechanism where the converter can switch between type I and type II configurations based on application requirements. Four controllable switches (S1, S2, S3, S4) are introduced to dynamically reconfigure the power flow paths, allowing the system to adapt its topology in real-time rather than being fixed in a single configuration.

The patent creates a universal DC-DC converter that can perform multiple topology functions within a single device. By incorporating the four controllable switches and their control logic, the converter achieves multi-functionality, capable of operating as both type I and type II partial power converters depending on the switching states, thereby eliminating the need for separate dedicated converters for different applications.

The patent applies power segmentation by dividing the total power flow into two paths: a direct power link that bypasses the DC-DC converter for minimal loss transmission, and a processed power path through the DC-DC converter for voltage matching and control. This segmentation allows only the necessary portion of power to undergo conversion, reducing overall power losses while maintaining effective power transfer.

The patent implements partial power conversion by processing only the portion of power that requires voltage transformation or regulation, rather than converting 100% of the power through the DC-DC converter. The direct power link handles the remaining power flow, achieving adequate power conversion efficiency without the excessive losses associated with full power processing.