Title
Composite Controller For Grid Connected Photovoltaic Systems
Keywords
Auto-disturbance rejection controller; Cycle discrete control; Grid-connected photovoltaic system; Maximum power point tracking
Abstract
This paper addresses a new composite controller for a boost-buck inverter to interface the photovoltaic array with the power grid. Based on dynamically tracking the maximum power point, two novel control methodologies are proposed to control the DC-bus and the output current for the inverter. First, a new linear cycle discrete control algorithm is introduced to realize linear control of the DC-bus voltage and synchronously get the reference current for the inner current loop with a little calculation. Then, to assure a good adaptability to noise and model uncertainty, an auto-disturbance rejection controller is chosen as the output current controller, which does not depend on precise mathematics model. Thus, output current of PV system to the grid is with low harmonic distortion and unity power factor. Simulations and experiments are performed, and the results show that the system is of excellent robustness and effective.
Publication Date
3-1-2008
Publication Title
High Technology Letters
Volume
14
Issue
1
Number of Pages
24-29
Document Type
Article
Personal Identifier
scopus
Copyright Status
Unknown
Socpus ID
41649085058 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/41649085058
STARS Citation
Dong, Mi; Yang, Jian; and Luo, An, "Composite Controller For Grid Connected Photovoltaic Systems" (2008). Scopus Export 2000s. 10706.
https://stars.library.ucf.edu/scopus2000/10706