Analysis and Control of SIDO Boosting Gain Converter

This paper presents analysis and control of boosting gain single-input double output converter (BG-SIDO). It is a two-switch based fifth-order converter and is having common ground among the outputs. It is capable of ensuring different boosting gains for its double outputs. Switch gate pulse-width modulation signals controlling allows to realize desired boosting voltages at the outputs. For controlling purpose, the two outputs should be monitored separately, and corrective action (different duty ratios) should be given to the two-switches. Since the two switches are inter-connected in between the source and loads through L-C elements. Any change in one switch duty ratio reflects other output voltage and vice versa. To understand this phenomenon, detailed mathematical analysis is established here, and then suitable controllers are designed. For controllers' design, multi-input multi-output systems control theory is adopted. BG-SIDO converter performance predetermination is carried out using PSIM simulations. For demonstration, scale-down prototype BG-SIDO converter is fabricated and validating experimental results are given which are close agreement with the analysis.