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- Title
Stand-alone PV connected system with energy storage with flexible operation.
- Authors
Battula, Santhoshkumar; Panda, Anup Kumar; Garg, Man Mohan
- Abstract
This article proposed the architecture of a stand-alone photovoltaic connected system (SPVS) with energy storage. An SPVS with energy storage requires power management for various operating modes. A coordinate controller is often necessary to manage the change in control architecture depending on the operating mode. This proposed system contains a boost converter (BC) and a bidirectional switched quasi-Z-source DC-DC converter (BSQZSDC). The BC is used for two purposes. The first is extracting the maximum power from the PV. The second is to control the DC link voltage when the SPVS is not in MPPT mode; dual-loop PI controllers are used for this. The BSQZSDC is used for energy management and regulates DC link voltage when SPVS operates in MPPT mode. This paper addresses about the effective control approach that BSQZSDC used, i.e., the double-integral sliding mode control, to regulate the DC link voltage and battery current in various operating modes. Experimental results were carried out to depict that the controller reasonably achieves the control objectives and proper energy management.
- Subjects
PHOTOVOLTAIC power systems; MAXIMUM power point trackers; SLIDING mode control; ENERGY storage; DC-to-DC converters; ENERGY consumption; ENERGY management
- Publication
Electrical Engineering, 2024, Vol 106, Issue 3, p2893
- ISSN
0948-7921
- Publication type
Article
- DOI
10.1007/s00202-023-02089-7