Vector Current Control Derived from Direct Power Control for Grid-Connected Inverters

Research output: Contribution to journalJournal articleResearchpeer-review

14 Citations (Scopus)
226 Downloads (Pure)

Abstract

We propose a vector current control derived from direct power control (VCC-DPC) for a three-phase voltage source inverter (VSI) in the synchronous rotating frame through instantaneous real and reactive powers. The proposed VCC-DPC method has the same control structure as the conventional VCC except for the coordinate transformation, since we obtain the d-q axes currents model of VSI without using Park transformation and the phase-locked loop (PLL) system. Consequently, the proposed method has the same property as the conventional VCC if the PLL extracts the phase angle of the grid voltage correctly. However, with the consideration of the slow dynamics of the PLL, the proposed method has an enhanced dynamical performance feature compared with the conventional VCC. Moreover, it has another benefit that the reduction of the computational burden could be expected since there is no Park transformation and the PLL in the controller implementation. We can guarantee that the closed-loop system with the proposed method is exponentially stable in the operating range. Finally, both simulation and experimental results using a 15-kW-inverter system match the theoretical expectations closely.

Original languageEnglish
Article number8544020
JournalI E E E Transactions on Power Electronics
Volume34
Issue number9
Pages (from-to)9224 - 9235
Number of pages12
ISSN0885-8993
DOIs
Publication statusPublished - Sep 2019

Keywords

  • Exponentially stable
  • instantaneous real and reactive powers
  • vector current controller
  • voltage source inverter (VSI)

Fingerprint Dive into the research topics of 'Vector Current Control Derived from Direct Power Control for Grid-Connected Inverters'. Together they form a unique fingerprint.

  • Projects

    Cite this