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, USA, 3495 - 3501. ISBN 9781467371506 (https://doi.org/10.1109/ECCE.2015.7310154)

[thumbnail of Lian-etal-ECE-2015-Modular-input-series-input-parallel-output-series]
Preview
Text. Filename: Lian_etal_ECE_2015_Modular_input_series_input_parallel_output_series.pdf
Accepted Author Manuscript

Download (468kB)| Preview

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.