Modular input-series-input-parallel output-series DC/DC converter control with fault detection and redundancy

Lian, Yiqing and Holliday, D. and Adam, G. P. and Finney, S. J. (2015) Modular input-series-input-parallel output-series DC/DC converter control with fault detection and redundancy. In: Energy Conversion Congress and Exposition (ECCE), 2015 IEEE. IEEE, Piscataway, 3495 - 3501. ISBN 9781467371506

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    Abstract

    A novel high-power modular input-series-input-parallel output-series connected DC/DC converter for medium-voltage application is proposed. Emphasis has been placed on power sharing control to compensate parameter mismatches and achieve equal power distribution between modules. Converter control is extended to achieve fault-tolerant operation by exploiting modularity to provide redundancy in the event of any failure. The proposed control scheme is validated through application-level simulations and scaled-down experiments to testify the reliability of the proposed control for ensuring power sharing between modules under a range of operating conditions. The results validate the proposed converter and associated control scheme indicating this to be a promising topology for high-power medium-voltage applications.