A Study on Applying The Decoupled-Control Method on The Integrated Dual-Output Converter

This article represents the steady-state analysis and control of a non-ideal single-input/double-output DC/DC converter (SIDOC) named an integrated dual-output converter at continuous conduction mode (CCM). This converter offers positive voltage levels at outputs using a step-up boost converter and a step-down buck converter. This topology is obtained by combining half-bridge pair transistors, a boost converter, and a buck converter. In this way, it has a continuous input current waveform, which is desired for renewable energy systems. This topology is also suitable for residential applications and low-voltage auxiliary power supplies since it obtains multiple voltage levels. To ensure a stable operation, the decoupled-control method is suggested to regulate the output voltages. This method separates the control loops of different output voltages to remove the cross-regulation and cross-coupling of outputs. Then, among available classical compensators, the type-three lead-lag controller is chosen for the compensation. The state-space equations are used to model the converter for non-ideal conditions. Finally, simulations are done using MATLAB/Simulink, which validates the theoretical calculations.