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Virtual Synchronous Machines – Classification of Implementations and Analysis of Equivalence to Droop Controllers for Microgrids

Virtual Synchronous Machines – Classification of Implementations and Analysis of Equivalence to Droop Controllers for Microgrids

Kategori
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Sammendrag
The concept of Virtual Synchronous Machines (VSM)
is emerging as an alternative approach for control of power
electronic converters operating in the power system. One main
motivation for applying VSM-based control is to achieve a
simple approach for emulating the inertia effect of traditional
synchronous machines. This paper provides a comprehensive
literature review on VSM and a possible classification of the
different schemes. In addition, the small-signal response of the
inertia emulation characteristics of VSM-based control is
proved to be equivalent to conventional droop-based control for
standalone and microgrid operation of converters. Thus, the
droop gain and the filter time constant of the power feedback in
a droop controller can be directly related to the damping factor
and the inertia constant of a Virtual Synchronous Machine. The
derived results are providing additional physics-based insight
into the operation and tuning of both types of controllers.
Oppdragsgiver
  • Research Council of Norway (RCN) / 191031
Språk
Engelsk
Institusjon(er)
  • SINTEF Energi AS / Energisystemer
  • Norges teknisk-naturvitenskapelige universitet
År
Forlag
IEEE
Bok
2013 IEEE Grenoble PowerTech
ISBN
9781467356688