Small-Signal Modeling and Analysis of Input Series-Output Parallel Connected Converter System for High Voltage Power Conversion Application

고 입력 전압 응용에 적합한 입력직렬-출력병렬 컨버터 시스템의 소신호 분석

The small signal model for input series-output parallel connected converter system employing charge control together with input capacitor voltage feedback loop is developed. From the model developed, the effect of input capacitor voltage feedback loop to the system stability and outer loop compensator design is analyzed. Theoretical results and simulation show that input capacitor voltage feedback loop has no critical effects on the system stability, so the system can be reduced to a equivalent single module for the stability analysis and outer loop compensator design.