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

Yuyang Li, Qiuye Sun, Danlu Wang and Sen Lin
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Yuyang Li: College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
Qiuye Sun: College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
Danlu Wang: College of Information Science and Engineering, Northeastern University, Shenyang 110004, China
Sen Lin: College of Information Science and Engineering, Northeastern University, Shenyang 110004, China

Energies, 2019, vol. 12, issue 3, 1-14

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.

Keywords: Energy Router; DC microgrid; power feedforward control; virtual inertia (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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