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A dq Axis Decoupling Parameter Identification Strategy for Grid-connected Inverter Controller of Photovoltaic Generation System
Author:
Affiliation:

(1.Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; 2.State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Tsinghua University, Beijing 100084, China; 3. China Electric Power Research Institute (Nanjing), Nanjing 210003, China)

Abstract:

The controller of grid-connected inverter plays a decisive role in the transient characteristics of the photovoltaic (PV) system. Therefore, the accuracy of the controller parameters is quite important in the analysis of PV system impact on the power system. This paper presents a dq axis decoupling parameter identification strategy for a typical PV inverter, which contains double loop control model. Furthermore, the parameter identification effects are compared, in terms of the impact of different levels of noise and different types of disturbances. In addition, the impact of the filter inductance error on the identification is discussed. Finally, the validity of the identification strategy is proved by case studies.

Keywords:

Foundation:

Special Fund of the National Basic Research Program of China;High-Tech Research and Development Program of China

Get Citation
[1]SHEN Xinwei, ZHENG Jinghong, ZHU Shouzhen, et al. A dq Axis Decoupling Parameter Identification Strategy for Grid-connected Inverter Controller of Photovoltaic Generation System[J]. Automation of Electric Power Systems,2014,38(4):38-43. DOI:10.7500/AEPS20130328001
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History
  • Received:March 28,2013
  • Revised:January 08,2014
  • Adopted:October 05,2013
  • Online: December 25,2013
  • Published: