Convex combination of least mean square for grid‐tied PV system. Issue 13 (12th July 2019)

• Record Type: Journal Article
• Authors: Jain, Vandana; Hussain, Ikhlaq; Kandpal, Maulik; Singh, Bhim
• Is Part Of: IET renewable power generation. Volume 13:Issue 13(2019)
• Page Start: 2319
• Page End: 2327
• Publication Date: 2019-07-12
• Subjects: maximum power point trackers -- convergence -- power generation control -- least mean squares methods -- adaptive filters -- photovoltaic power systems -- power grids -- harmonic distortion; fast convergence -- conventional controls -- CCLMS algorithm -- LMS filters -- tracking capability -- fixed stepping -- fast tracking -- maximum power point tracking -- peak power extraction -- PV array -- adverse conditions -- voltages unbalance -- load currents unbalances -- system performance -- convex combination -- grid‐tied PV system -- three‐phase grid‐tied single‐stage -- solar photovoltaic system -- adverse grid situations -- voltage unbalances -- mean square control approach -- fundamental component -- load current; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2018.5552
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : Here, an implementation of three‐phase grid‐tied single‐stage solar photovoltaic (PV) system is done at adverse grid situations of voltage unbalances. The proposed convex combination of least mean square (CCLMS) control approach is adaptive in nature, which extracts the fundamental component of load current (FCI) with fast convergence and provides good performance than conventional controls. The CCLMS algorithm overcomes the compromise of LMS filters between precision and tracking capability due to fixed stepping by providing a combination of two filters for precision and fast tracking. The perturb and observe (P&O)‐based maximum power point tracking (MPPT) is employed for peak power extraction from a PV array. The system is tested in the laboratory on a developed prototype at several adverse conditions like voltages unbalance, load currents unbalances, and irradiation changes. The system performance is acceptable and harmonics distortion is in the limits according to the IEEE‐519 standard while supplying energy to the utility and to the loads.