Virtual DC Generator Control Strategy for Load DC-DC converter

DOI

10.2991/isci-15.2015.181How to use a DOI?

Keywords

DC microgrid; virtual DC generator control strategy; Small-signal model; DC bus voltage

Abstract

DC distribution can reduce the converter link, improve power efficiency, while make renewable energy access convenient, and there is no need to consider the stability of frequency, reactive power and other issues. As a micro-grid power feed part, DC/DC converter’s control method is particularly important. A control method of DC generator that suitable for the DC/DC converter connect to energy storage and load has been proposed, which inherits inertia characteristics of rotation motor. This strategy will try to eliminate the effects of load’s output and restore disturbed load side voltage softly while the device put in or cut off from the bus. DC/DC small-signal model has been established, proving that power response of DC/DC converter controlled by virtual DC generator strategy in DC bus voltage fluctuation process is inversely proportional to its damping parameters. Therefore the absorption of the bus power can be adjusted automatically according to the change of the bus voltage, response the fluctuations of the bus voltage and support the recovery of bus voltage Simulation and experimental results verify the feasibility and correctness of the proposed control strategy.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Di Huang
AU  - Shaosheng Fan
AU  - Bin Fan
PY  - 2015/01
DA  - 2015/01
TI  - Virtual DC Generator Control Strategy for Load DC-DC converter
BT  - Proceedings of the 2015 International Symposium on Computers & Informatics
PB  - Atlantis Press
SP  - 1359
EP  - 1368
SN  - 2352-538X
UR  - https://doi.org/10.2991/isci-15.2015.181
DO  - 10.2991/isci-15.2015.181
ID  - Huang2015/01
ER  -