Mitigating balanced and unbalanced voltage sag via shunt-connected voltage source convertor (vsc) by using double vector controller

Abdollah Shokri, Hussain Shareef, Azah Mohamed, Shervin Shokri

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study presents a shunt-Connected Voltage Source Convertor (VSC) to mitigate balanced and unbalanced voltage sag and regulate the grid voltage at a fixed level by inserting required reactive power at the Point of Common Coupling (PCC). Moreover, an inner Vector Current-Controller (VCC) and outer voltage controller (VVC) are applied together to calculates the current references for the VCC. Furthermore, an inductor/capacitor/inductor (LCL) filter is replaced with the simple L-filter in between the VSC and the network and it is constructed to reduce the voltage sag. Likewise, to make up for the unbalanced dips, the positive and negative sequence components related to the grid voltage should be managed distinctly. The positive and negative sequence components related to the grid voltage should be managed distinctly. This is achieved through the application of two independent controllers for the two sequences with an identical cascade structure which has been explicated above. Simulation results designate proper functioning of the control system which has been proposed.

Original languageEnglish
Pages (from-to)2379-2385
Number of pages7
JournalResearch Journal of Applied Sciences, Engineering and Technology
Volume6
Issue number13
Publication statusPublished - 2013

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Controllers
Electric potential
Reactive power
Capacitors
Control systems

Keywords

  • Power quality
  • Reactive power controller
  • Voltage and current controller
  • Voltage sag mitigation
  • Voltage source convertor

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Science(all)

Cite this

Mitigating balanced and unbalanced voltage sag via shunt-connected voltage source convertor (vsc) by using double vector controller. / Shokri, Abdollah; Shareef, Hussain; Mohamed, Azah; Shokri, Shervin.

In: Research Journal of Applied Sciences, Engineering and Technology, Vol. 6, No. 13, 2013, p. 2379-2385.

Research output: Contribution to journalArticle

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