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Open AccessArticle

Optimally Tuned Interleaved Luo Converter for PV Array Fed BLDC Motor Driven Centrifugal Pumps Using Whale Optimization Algorithm—A Resilient Solution for Powering Agricultural Loads

1
Department of Electrical and Electronics Engineering, School of Engineering and Technology, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu 641114, India
2
School of Energy and Environment, City University of Hong Kong, Hong Kong, China
3
Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9FE, UK
4
College of Engineering, Mathematics and Physical Sciences, Renewable Energy, University of Exeter, Cornwall TR10 9FE, UK
*
Authors to whom correspondence should be addressed.
Electronics 2020, 9(9), 1445; https://doi.org/10.3390/electronics9091445
Received: 14 July 2020 / Revised: 31 August 2020 / Accepted: 1 September 2020 / Published: 4 September 2020
(This article belongs to the Special Issue Power Electronics in Industry Applications)
The use of brushless direct current (BLDC) motors are gaining much prominence in water pumping systems (WPS), especially for agricultural purposes. In most cases, the BLDC based WPS is powered using electricity from the grid, which is vulnerable to disruptive events causing a resilience problem. However, to avoid the resilience issue, grid-interactive solar photovoltaics (PV) are being used, and this is due to the increased penetration of distributed generation sources into the grid. In these systems, based on the inherent nature of solar PV, power converters are preferred, and as a result, problems like switching losses and maintaining steady-state voltages are commonly seen. In this paper, a framework of PV powered WPS with scope for optimizing controller parameters is proposed to avoid the above-raised issues. Based on the proposed framework, the overall structure of the PV powered WPS is modeled, designed, and analyzed. In the proposed system, the power output from solar PV is fed to the BLDC motor and the grid. If any problem arises in obtaining the power from solar PV, grid-interaction helps to run the motor at required speeds making the WPS resilient to unexpected disruptions and vice versa. For retrieving the generated power from PV array, a positive interleaved Luo converter (I-Luo) is used, which boosts the output with minimum switching losses. To maintain the steady-state voltage at the output of the I-Luo converter, a proportional-integral (PI) controller whose parameters are tuned by whale optimization algorithm (WOA) is used. This voltage is fetched to the BLDC motor via a 3-phase (3-Ф) inverter and then to the grid via a single-phase (1-Ф) inverter. The overall system is simulated and experimentally validated, with a detailed analysis of the observed results. The results include the various performance characteristics of the solar PV, converter, and BLDC motor. Besides, by using the field-programmable gate array (FPGA) based SPARTAN6E controller, the performance of the I-Luo is examined experimentally. View Full-Text
Keywords: photovoltaic array; solar applications in agriculture; agrivoltaics; water pumping system; BLDC based water pumps; PV based agro water pumps; PV powered water pumps; Luo converter; whale optimization; optimal tuning of control parameters; FPGA based SPARTAN6E controller; minimum switching losses; steady-state voltages; maximum peak shoot problem; centrifugal water pump photovoltaic array; solar applications in agriculture; agrivoltaics; water pumping system; BLDC based water pumps; PV based agro water pumps; PV powered water pumps; Luo converter; whale optimization; optimal tuning of control parameters; FPGA based SPARTAN6E controller; minimum switching losses; steady-state voltages; maximum peak shoot problem; centrifugal water pump
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MDPI and ACS Style

Jegha, A.D.G.; Subathra, M.S.P.; Kumar, N.M.; Ghosh, A. Optimally Tuned Interleaved Luo Converter for PV Array Fed BLDC Motor Driven Centrifugal Pumps Using Whale Optimization Algorithm—A Resilient Solution for Powering Agricultural Loads. Electronics 2020, 9, 1445. https://doi.org/10.3390/electronics9091445

AMA Style

Jegha ADG, Subathra MSP, Kumar NM, Ghosh A. Optimally Tuned Interleaved Luo Converter for PV Array Fed BLDC Motor Driven Centrifugal Pumps Using Whale Optimization Algorithm—A Resilient Solution for Powering Agricultural Loads. Electronics. 2020; 9(9):1445. https://doi.org/10.3390/electronics9091445

Chicago/Turabian Style

Jegha, A. D.G.; Subathra, M.S.P.; Kumar, Nallapaneni M.; Ghosh, Aritra. 2020. "Optimally Tuned Interleaved Luo Converter for PV Array Fed BLDC Motor Driven Centrifugal Pumps Using Whale Optimization Algorithm—A Resilient Solution for Powering Agricultural Loads" Electronics 9, no. 9: 1445. https://doi.org/10.3390/electronics9091445

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