An enhanced control design scheme for multiple-input converters based on time-sharing switching

摘要

This paper proposed an enhanced control method for multiple-input converters (MICs). Previously, the control design represents a major difficulty in MIC designs, primarily because MICs are naturally multiple-input-multiple-output (MIMO) control systems. As a result, a complex MIMO controller is generally required for an MIC. The proposed control design approach stands out from conventional ones due to its easiness especially for relatively complicated topologies. The proposed control scheme uses a demultiplexing stage in the loop to simplify the MIC control design. Consequently, the system to be controlled becomes a much simplified single-input-single-output system. Simulated and experimental results show that the proposed scheme is superior in its simplicity and compatibility with common control concepts such as bode diagram, crossover frequency, and phase margin. Simulated and experimental results are presented in this paper to verify the analysis.