E3S Web Conf.
Volume 185, 20202020 International Conference on Energy, Environment and Bioengineering (ICEEB 2020)
|Number of page(s)||7|
|Section||Energy Engineering and Power System|
|Published online||01 September 2020|
Study of A Bus Voltage Control Strategy for Two-Way AC/DC Current Converter in DC Microgrid
State Grid Henan Economic Research Institute, Zhengzhou, 450000, China
* Corresponding author: firstname.lastname@example.org
In an isolated DC microgrid consisting of photovoltaic cells, an energy storage unit and load, reasonable control of grid-connected two-way AC/DC converter can effectively realize coordinated power distribution and bus voltage stabilization of the microgrid. A mathematical model of grid-connected converter was established first in this paper, followed by a simulation analysis of the grid-connected converter under direct voltage control. In consideration of the fact that the ideal dynamic voltage response could not be realized by conventional control of the grid-connected converter, a seamless switching control strategy of inhibiting voltage fluctuation was proposed based on the voltage fluctuation analysis of the AC/DC converter, which improved the robust stability of the DC microgrid. The effectiveness and feasibility of the proposed control strategy were verified through the simulation results.
© The Authors, published by EDP Sciences, 2020
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