Abstract
Flexible power point tracking (FPPT) control algorithms have been introduced in the literature to provide frequency support in low-inertia grid-connected photovoltaic (PV) systems. This is achieved by regulating the PV output power to a power reference obtained from the energy management system. Partial shading of PV arrays is a frequent phenomena that needs to be investigated for FPPT operation of PV systems. This article proposes a simple and improved secant-based global FPPT algorithm that tracks the power reference during partial shading conditions. Guaranteed and fast convergence with flexibility to operate on both sides of the global maximum power point are the main contributions of the proposed algorithm. Experimental validation is carried out to demonstrate the efficacy of the proposed algorithm. © 1986-2012 IEEE.
| Original language | English |
|---|---|
| Pages (from-to) | 10383-10395 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 38 |
| Issue number | 8 |
| Online published | 18 May 2023 |
| DOIs | |
| Publication status | Published - Aug 2023 |
| Externally published | Yes |
Funding
This work was supported in part by the Republic of Singapore’s National Research Foundation (NRF) through the “Distributed Energy Resource Management System for Energy Grid 2.0 ” project at the Energy Research Institute at Nanyang Technological University, Singapore, and in part by the Office of Naval Research U.S. under DUNS Code: 595886219. Recommended for publication by Associate Editor D. M. Xu.
Research Keywords
- active power control
- Global flexible power point tracking (FPPT)
- grid-connected photovoltaic (PV) systems
- partial shading
- secant method
