Small-signal model for the ISOP DC-DC converters in the 5-level T-rectifier

摘要

A small-signal model for the Input-Series Output-Parallel (ISOP) DC-DC converters is developed in this paper. The proposed model is obtained applying the State-Space Averaging technique. The ISOP DC-DC converter consists of multiple DC-DC modules connected in series at the input and in parallel at the output. In this paper, the ISOP DC-DC converters are used in combination with the 5-level unidirectional T-Rectifier for electric generating units in More Electric Aircraft systems. The small-signal model for the ISOP DC-DC converters has been verified through the direct comparison with the converter full digital-switching model, realized in the Matlab/Simulink environment. Simulation results exhibit a good agreement between small-signal model and switching model.