Solar PV powered‐sensorless BLDC motor driven water pump. Issue 3 (10th December 2018)

• Record Type: Journal Article
• Authors: Kumar, Rajan; Singh, Bhim
• Is Part Of: IET renewable power generation. Volume 13:Issue 3(2019)
• Page Start: 389
• Page End: 398
• Publication Date: 2018-12-10
• Subjects: invertors -- pumps -- brushless DC motors -- photovoltaic power systems -- electric potential -- voltage‐source convertors; position sensorless brushless DC motor‐driven solar photovoltaic fed water pump -- sensorless operation -- PV array -- solar PV powered‐sensorless BLDC motor driven water pump -- back electromotive force zero crossing -- back‐EMF zero crossing -- line voltages -- neutral potential -- phase current sensors -- voltage source inverter -- fundamental frequency -- PV fed pumping system -- switching losses minimization; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2018.5717
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : This study deals with a position sensorless brushless DC (BLDC) motor‐driven solar photovoltaic (PV) fed water pump. A technique based on the back electromotive force (back‐EMF) zero crossing is proposed for sensorless operation of the BLDC motor. The back‐EMF is derived from the difference of line voltages. Thus, a requirement of neutral potential is eliminated. In addition, the proposed drive avoids the use of phase current sensors. The speed is automatically adjusted according to the available peak power from the PV array. The devices of voltage source inverter, used to feed the BLDC motor pump, are switched at fundamental frequency. This leads to minimised switching losses. The responses of PV fed pumping system with the proposed drive are observed under various operating conditions. The suitability of the proposed topology is demonstrated through the hardware implementation.