Design Procedure for Partial-Power Processing Configurations Considering Gain, Power Rating, and Operating Region of the Converter

A full-power processing (FPP) converter can be reconfigured in specific input-output connections so that it only processes a fraction of the output power. These configurations, known as Partial-Power Processing Configurations (PPPCs), typically force the converter to operate at a different operating point compared to FPP under the same input-output voltage and current conditions. Since converters are usually designed for FPP operation, there is a need to translate the PPPC input-output conditions and specifications into the conventional FPP converter design procedure. This paper introduces a design approach for PPPCs, focusing on the optimal configuration selection through a detailed mapping of PPPC specifications and operating regions into converter specifications and operating regions used within PPPCs. A generalized analysis of PPPCs is presented in per-unit terms, examining power rating, gain, and operating regions. Step-up PPPCs are compared while considering real, non-ideal converter parameters.