Investigation of the output droop characteristics of parallel-connnected DC-DC converters
- 17 December 2002
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2, 1342-1351 vol.2
- https://doi.org/10.1109/pesc.1994.373859
Abstract
The analytical proof that output voltage droop characteristics of parallel-connected DC-DC power converters are only appropriate for very limited applications is presented. Because the converters are rarely made to be identical, near-uniform current-sharing without additional control can be achieved only when converters connected in parallel have similar characteristics of being very close to the ideal current sources. This can occur at a cost of poor voltage regulation. As an alternative, the current-sharing control technique, which requires no remote-sensing, is proposed. The technique ensures uniform or designated current distribution throughout the specified load range. A control circuit module is independently implemented without any preliminary knowledge or any circuit modification of the source converters.<>Keywords
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