Call Us On : +91 7042 195 641  [email protected]

Low Frequency Resonance Suppression of a Dual-Active-Bridge (DAB) DC/DC converter Enabled DC Microgrid

Low Frequency Resonance Suppression of a Dual-Active-Bridge (DAB) DC/DC converter Enabled DC Microgrid

Low Frequency Resonance Suppression of a Dual-Active-Bridge (DAB) DC/DC converter Enabled DC Microgrid

 

Abstract–

In this paper, the small signal stability issue of a dual active bridge (DAB) converter enabled DC microgrid is addressed. The derived impedance characteristic of the source
DAB converter reveal that the stability of this DC grid is decided by the low frequency terminal behaviors of integrated units, which is different from that of DC microgrids powered by other types of source converters. At this low frequency range, the tightly regulated load converter exhibits constant power load (CPL) behavior even with a low control bandwidth, which degrades system stability by exacerbating interactions among power converters. Moreover, the deployed power management strategy requires operating mode transitions of energy storage units to achieve intelligent power flow, which further complicates system impedance characteristics. To analyze and solve these issues, the systematic impedance models of this DC grid under different operation modes are derived and analyzed. Reducedorder low frequency models are simplified from the systematic impedance model to unravel the resonance mechanism. In addition, an impedance shaping technique is proposed to eliminate the resonant path in the reduced-order low frequency models, therefore the dc grid stability has been improved. Finally, a hardware-in-the-loop (HIL) application with OPALRT real-time simulators is used to validate proposed methods.

 


What we provide:

  • Complete Research Assistance

Technology Involved:-

  • MATLAB, Simulink, MATPOWER, GRIDLAB-D,OpenDSS, ETAP, GAMS

Deliverables:- 

  • Complete Code of this paper
  • Complete Code of the approach to be propose
  • A document containing complete explanation of code and research approach
  • All materials used for this research
  • Solution to all your queries related to your work
Close Menu