Computer and Modernization ›› 2012, Vol. 1 ›› Issue (9): 54-56,6.doi: 10.3969/j.issn.1006-2475.2012.09.014

• 计算机控制 • Previous Articles     Next Articles

Study on SPLL of Grid-connected PV Generation System

LI Wen-jie, SUN Zhi-yi, HE Qiu-sheng   

  1. College of Electronic and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
  • Received:2012-04-23 Revised:1900-01-01 Online:2012-09-21 Published:2012-09-21

Abstract: Grid-connected PV system is one of the technologies to use the solar energy. Grid-connected inverter is a core part of linking the grid. In order to make the output current of grid-connected inverter track the grid voltage fundamental and complete the Genlock, this paper uses 1kW single-phase photovoltaic grid-connected inverter as research platform. The paper describes the working principle of the photovoltaic grid-connected inverter and the system architecture. It analyzes the control technology of grid-connected inverter and proposes a software phase-locked loop of a dual-park phase detector based on coordinate transformation. At last it verifies the feasibility of this method by Matlab simulation.

Key words: single-phase photovoltaic grid-connected inverter, network control, software phase-locked loop, Matlab simulation