Back to Search
Start Over
New Diagnosis and Fault-Tolerant Control Strategy for Photovoltaic System.
- Source :
- International Journal of Photoenergy; 7/21/2021, p1-15, 15p
- Publication Year :
- 2021
-
Abstract
- This paper discusses open-circuit fault (OCF) diagnosis and fault-tolerant control strategy (FTCS) of a nonisolated DC-DC converter. The photovoltaic power conversion structure (PPCS) consists of a photovoltaic generator and an interleaved Boost converter (IBC). The maximum power point tracking (MPPT) control of the IBC ensures operation at maximum power. The design of the nonlinear Backstepping control is detailed based on the equivalent average model of IBC, and the stability is studied using Lyapunov's theorem. The proposed OCF fault detection is based on sampling the voltage across the inductor at a much higher frequency than the switching frequency. In an OCF situation occurrence and a high control signal state, the detection of three negative samples is a condition for signaling the presence of an OCF fault; the photovoltaic system continues its normal operation. The simulation results show the validity of the proposed FTCS. The proposed diagnosis and control strategy improves the performance of the IBC in terms of cost, reliability, and service continuity. [ABSTRACT FROM AUTHOR]
- Subjects :
- DC-to-DC converters
DIAGNOSIS
MAXIMUM power point trackers
Subjects
Details
- Language :
- English
- ISSN :
- 1110662X
- Database :
- Complementary Index
- Journal :
- International Journal of Photoenergy
- Publication Type :
- Academic Journal
- Accession number :
- 151505619
- Full Text :
- https://doi.org/10.1155/2021/8075165