A Total-Cross-Tied-Based Dynamic Photovoltaic Array Reconfiguration for Water Pumping System

Gadiraju Harish Kumar Varma,Venugopal Reddy Barry,Rohit Kumar Jain

doi:10.1109/access.2022.3141421

Gadiraju Harish Kumar Varma, Venugopal Reddy Barry + Show 1 more

Open Access

https://doi.org/10.1109/access.2022.3141421

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Journal: IEEE Access	Publication Date: Jan 1, 2022
Citations: 15	License type: CC BY 4.0

Affiliation: National Institute of Technology Goa

Abstract

Most Photo-voltaic (PV) applications require a shadow-free area for the installation of the PV panels. However, shading is inevitable in a few applications like building-integrated PV pumping systems (BIPVPS). Partial shading occurs due to soiling, clouds, shades of nearby trees, buildings, current, and telephone poles. During this partial shading condition, the PV array output power decreases, reducing the efficiency of the BIPVPS. In this paper, a novel dynamic array reconfiguration technique is proposed to enhance the power output from the PV array. The proposed system uses a boost converter with an incremental conductance algorithm for operating enhanced power at the maximum. Sinusoidal Pulse Width Modulation (SPWM) technique based on <inline-formula> <tex-math notation="LaTeX">$V/f$ </tex-math></inline-formula> control operates the induction motor. Thus, the proposed algorithm and maximum power point technique (MPPT) enhance the power output from the PV array and track the global power. The PI and <inline-formula> <tex-math notation="LaTeX">$V/f$ </tex-math></inline-formula> control regulate the dc-link voltage and speed of the Induction motor. Simulations and experimental studies are performed to show the effectiveness of the proposed algorithm. The proposed system results in additional 234 W PV power extraction compared to the conventional system. Thus, making the proposed BIPVPS efficient.

Highlights

Photovoltaic (PV) based energy generation technologies have been at the forefront among renewables for power generation
The design of the motor improves the efficiency, the effective utilization of PV array during partial shading has a significant effect on the overall efficiency of the PV water pumping system [26]
2 This paper proposes a novel dynamic reconfiguration (DR) for TCT topology using irradiance sensors for power enhancement to improve the water discharge at any shading conditions

Summary

INTRODUCTION

Photovoltaic (PV) based energy generation technologies have been at the forefront among renewables for power generation. The design of the motor improves the efficiency, the effective utilization of PV array during partial shading has a significant effect on the overall efficiency of the PV water pumping system [26]. In the proposed method to improve the overall system efficiency, emphasis is made on extracting and enhancing the maximum power from the PV array using an conventional induction motor. The single-stage topology of the solar PV array system does not require a boost converter Both the benefits of MPPT and dc-link voltage control are achieved through the inverter. In paper [32], reconfiguration for PV water pumping system is developed, where the algorithm verifies all the combinations of irradiances to generate the maximum output power. Where TL and ω represents the load torque and speed of the motor in (N-m) and (rad/sec), respectively

DESIGN OF PV ARRAY

DESIGN OF CONVERTERS

G31 G32 G33

SIMULATION RESULT ANALYSIS

EXPERIMENTAL RESULTS ANALYSIS

CONCLUSION