Open AccessPerformance analysis of a solar‐powered water pumping using improved SIDO buck–boost converter
Author(s) -
Singh Bhim,
Mishra Anjanee Kumar
Publication year - 2019
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2018.5448
Subject(s) - buck converter , maximum power point tracking , photovoltaic system , boost converter , buck–boost converter , control theory (sociology) , water pumping , ripple , capacitor , power (physics) , voltage , ćuk converter , computer science , inductor , engineering , electrical engineering , inverter , control (management) , physics , mechanical engineering , inlet , quantum mechanics , artificial intelligence
This study proposes a low‐cost solar‐powered water pumping system (SPWPS) utilising a proposed single‐input dual‐output (SIDO) buck–boost converter with an efficient control technique for the switched reluctance motor (SRM) drive. The newly designed buck–boost converter provides a continuous input and output current to the motor with a low ripple content. This converter is also capable to minimise the size of DC‐link capacitor and to provide a balanced dual output voltage supply. Owing to the fundamental frequency switching of a split DC mid‐point converter, there is a considerable reduction in the semiconductor losses and provides an opportunity to eliminate the sensors from the motor side. In addition, an improved perturb and observe (P&O) maximum power point tracking (MPPT) technique is also implemented in proposed system. The implemented MPPT algorithm has drift‐free operation and an ability to control the pumping rate also at maximum PV power generation, which is usually difficult in standalone water pumping system. Test results are presented on an 875‐Wp PV array fed a 1 hp pump to demonstrate sound agreement between the simulated and test results of proposed system.