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Energies 2019, 12(3), 517; https://doi.org/10.3390/en12030517

A Virtual Inertia-Based Power Feedforward Control Strategy for an Energy Router in a Direct Current Microgrid Application

1
College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
2
State Key Laboratory of Synthetical Automation for Process Industries (Northeastern University), Shenyang 110004, China
*
Author to whom correspondence should be addressed.
Received: 29 December 2018 / Revised: 30 January 2019 / Accepted: 1 February 2019 / Published: 6 February 2019
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Abstract

Due to the uncertainty of the power load and the randomness of distributed generations, low-voltage direct current (LVDC) bus voltage fluctuation will greatly affect the safety of an energy router-enabled direct current (DC) microgrid. In this paper, a power feedforward control strategy based on a dual active bridge (DAB) DC/DC converter in an energy router-based DC Microgrid is proposed. Based on this strategy, the LVDC bus voltage is controlled by virtual inertia control of the DC microgrid, instead of by the DAB converter. Thus, two benefits of the proposed strategy can be achieved: the power feedforward control can be realized, to mitigate the voltage fluctuation range of the LVDC bus; and the modulation algorithm in the DAB converter can be simplified. Experimental results verify the correctness and effectiveness of the proposed control method. View Full-Text
Keywords: Energy Router; DC microgrid; power feedforward control; virtual inertia Energy Router; DC microgrid; power feedforward control; virtual inertia
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Li, Y.; Sun, Q.; Wang, D.; Lin, S. A Virtual Inertia-Based Power Feedforward Control Strategy for an Energy Router in a Direct Current Microgrid Application. Energies 2019, 12, 517.

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