Paper Title:
Quasi Resonant Direct Power Control of Three-Phase Grid-Connected Inverters in Distributed Generation Systems
  Abstract

The paper proposes a quasi resonant direct power control algorithm for three-phase grid-connected inverters without grid voltage sensors in distributed generation systems. According to the active and reactive power references, grid virtual flux and the inverter output current references are calculated. In order to accurately and fast track the output current references, the quasi proportional resonant (QPR) controller is used. The theoretical principle of this method is discussed. The steady-state and dynamic experimental results of quasi resonant direct power control that can illustrate the operation and performance of the presented control strategy are displayed. It is shown that the control system exhibits several advantages, such as constant switching frequency, sinusoidal grid currents and good dynamic response. Experimental results are provided to demonstrate the effectiveness of the proposed control strategy.

  Info
Periodical
Edited by
Zhixiang Hou
Pages
863-867
DOI
10.4028/www.scientific.net/AMM.48-49.863
Citation
F. P. Zhao, Y. Yang, Y. Yuan, "Quasi Resonant Direct Power Control of Three-Phase Grid-Connected Inverters in Distributed Generation Systems", Applied Mechanics and Materials, Vols. 48-49, pp. 863-867, 2011
Online since
February 2011
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