A comparison of module shutdown methods in an input-series and output-parallel connected modular DC-DC converter

Ting, Y.; Huang, K.; de Haan, S.W.H.; Ferreira, J.A.

A comparison of module shutdown methods in an input-series and output-parallel connected modular DC-DC converter

Conference paper (2014)

Authors

Y. Ting Electrical Power Processing

K. Huang Electrical Power Processing

S.W.H. de Haan Electrical Power Processing

J.A. Ferreira Electrical Power Processing

Research Group

Electrical Power Processing

Thermal stress ISOP modular converte Module shutdown Current bypass Discharging interval

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Published Date

2014

Language

English

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Research Group

Electrical Power Processing

Abstract

In an input-series and output-parallel (ISOP) connected modular DC-DC converter, module shutdown and reactivation are required to increase system efficiency, input voltage range and reliability. Methods are introduced to implement these capabilities in the ISOP DC-DC converter system using additional external IGBTs and existing internal IGBTs. Comparisons of the shutdown speeds and thermal stresses are made for these methods over a range of input capacitance and experimental results are obtained to verify these predicted results. Finally, conclusions are drawn on the advantages and disadvantages of each method.