Solar‐powered switched reluctance motor‐driven water pumping system with battery support

Abstract

This work deals with the development of an efficient and reliable solar photovoltaic-fed water pump with a battery energy storage (BES). This system ensures a continuous and rated supply of water in all working conditions. A new control logic for BES is developed, which significantly improves the overall response of the system. The support of the battery as a backup source is obtained through a bidirectional DC-DC converter. Both the charging/discharging control and maximum power tracking of the solar panel are achieved through this bidirectional converter, whereas the voltage asymmetry compensation across split capacitors at DC link and motor drive controls are supervised by switched reluctance motor converter. The performance of the present scheme is examined through both simulated and experimental responses and is found adequate under all operational scenarios. 1 INTRODUCTION Among the recent renewable power sources, photovoltaic (PV) array power is often a best source and available in an endless sum [1]. The primary advantages of solar-dependent power stage incorporate clean, contamination-free, brief time establishment, and long-life operation. Some of the basic limitations of the solar system like its expensiveness, lower conversion ratio, and intermittency in solar power have been successfully overcome in recent times through advancements in solar technologies [2, 3]. Therefore, solar-powered water pumps are the most efficient way to utilise the available abundant solar power [4, 5]. Innumerable research has been carried out to develop an efficient solar-powered water pumping system (SPWPS) using various electric motor drives [4-7]. Due to the critical nature of water pumping application, there exists a need to utilise a robust, highly reliable, cost-effective, high starting torque and efficient motor drive. Since the switched reluctance motor (SRM) drive has all these required characteristics, it is emerging as one of the prominent drives for water pumping system (WPS) [8-10]. Nevertheless, various positive aspects of solar-powered systems are there; however, one major drawback of it is the This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

One‐cycle controlled standalone solar water pumping system

“…12 Even though the system provides control signals for all working conditions, transients occurring in the output voltage of the converter were a major disadvantage. A solar powered single stage pumping system using SRM 13 was proposed but single-stage operation increases the cost of the system, moreover controlled charging and discharging were not explained in the system for safer operation of batteries. The DC output voltage regulation is of much importance in standalone PV systems.…”