A new master-slave based secondary control method for virtual synchronous generator

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8 Scopus citations

Abstract

VSG (Virtual Synchronous Generator) is a control method for inverters that mimics both the steady-state droop characteristic and transient characteristic of Synchronous Generators (SGs). Because the steady states of VSG and droop controlled inverters are similar, the deviation of frequency and voltage amplitude also exists in the VSG. This paper proposes a new secondary control method mimicking the master-slave control but requiring no communications among VSGs. In the proposed method, the master VSG is controlled as a voltage source while the slave VSGs are controlled as current sources. The droop characteristic biases of slave VSGs are regulated online based on the load power estimation. Through this method, frequency and voltage deviation can be compensated and the majority of load power can be shared equally among slave VSGs. Simulation and experimental results are provided to verify the effectiveness of the proposed control strategy.

Original languageEnglish
Title of host publication2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509015467
DOIs
StatePublished - 2016
Event2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016 - Auckland, New Zealand
Duration: 5 Dec 20168 Dec 2016

Publication series

Name2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016

Conference

Conference2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016
Country/TerritoryNew Zealand
CityAuckland
Period5/12/168/12/16

Keywords

  • VSG
  • master-slave control
  • secondary control

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