Open AccessTwo‐switch flyback inverter employing a current sensorless MPPT and scalar control for low cost solar powered pumps
Author(s) -
Karbakhsh Faramarz,
Amiri Mehdi,
Abootorabi Zarchi Hossein
Publication year - 2017
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
ISSN - 1752-1424
DOI - 10.1049/iet-rpg.2016.0631
Subject(s) - flyback transformer , maximum power point tracking , photovoltaic system , inverter , control theory (sociology) , solar micro inverter , flyback converter , computer science , flyback diode , topology (electrical circuits) , engineering , electronic engineering , electrical engineering , voltage , control (management) , boost converter , transformer , artificial intelligence
Flyback inverter is known as a low cost solution for photovoltaic (PV) ac module application. This study presents a two‐switch flyback inverter followed by a low frequency unfolding bridge for fractional horse power water pumping systems. This topology mitigates the problem of high‐voltage transients at switch turn off which commonly exists in single switch flyback inverters. Moreover, the proposed control strategy achieves an integration of a novel sensorless maximum power point tracking (MPPT) algorithm as well as a constant v / f control for the efficient utilisation of both the PV panel and the motor. The proposed control algorithm minimises the cost and simplifies the control strategy. The validity and capability of the proposed method are verified by both simulation and practical results of a DSP‐based two‐switch flyback solar micro inverter for a fractional horsepower water pumping system.