Introduction：
Peter, G (2022) in research mentioned the global environmental problem, The proliferation of environmentally detrimental substances such as hazardous waste and emissions, encompassing greenhouse gases like CO2, has emerged as a noteworthy concern necessitating careful consideration. An increasing number of conscientious corporations are directing heightened focus towards matters pertaining to climate and energy, thereby intensifying their research endeavours in the realm of renewable energy commodities. Solar water pumping system (PVWPS), indeed, stands as a mature product within the realm of photovoltaic applications. Early in June 1986 Indonesia, Lubis, A (1990) claims that the first ‘dual step Photovoltaic pumping system’ (PVPS) was commissioned and operationalized in Indonesia. A photovoltaic power station with a capacity of 6.3 kWp efficiently converts solar energy into electricity through direct conversion processes. Complemented by a battery system and a direct current/alternating current inverter, this facility also enhances water supply to cater to the water needs of a surrounding community of 1000 people. Within the context of the photovoltaic solar water pumping system (PVWPS), the photovoltaic inverter assumes an indispensable role akin to that of a vital organ, the heart. This article expounds upon the role of Photovoltaic Inverters in Photovoltaic Irrigation Systems
Abstract：
In most regions, people utilize traditional internal combustion engines (diesel pumps) to extract water from wells. These diesel pumps are easy to install but necessitate frequent on-site maintenance. Coupled with insufficient diesel resources in certain areas and the adverse environmental impacts of carbon dioxide emissions, the employment of photovoltaic systems to operate water pumps emerges as one of the most promising applications of renewable energy.
Through an analysis of diverse scholarly research, this study arrives at the conclusion that photovoltaic inverters within photovoltaic irrigation systems can enhance operational efficiency and reduce operational and maintenance costs.
1. Higher Efficiency
Photovoltaic inverters with MPPT functionality contribute to enhancing the utilization efficiency of solar energy resources. Taking the FG series photovoltaic inverter by the CHRH brand as an illustration, the CHRH FG series photovoltaic inverter adeptly adjusts its output frequency in response to variations in solar irradiance, thereby accomplishing Maximum Power Point Tracking (MPPT). The latest power tracking control algorithm developed by CHRH exhibits not only heightened responsiveness compared to analogous products but also an inherent adaptability to fluctuations in weather conditions, necessitating minimal human intervention.
The CHRH FG series photovoltaic inverter boasts a suite of additional capabilities, including low-light dormancy, high-light arousal, high-water-level dormancy, and under-load alarm functions characteristic of the Photovoltaic Water Pumping System (PVWPS). Concurrently, the CHRH FG series photovoltaic inverter accommodates both direct current (DC) and alternating current (AC) inputs. During instances of insufficient solar irradiance, the FG series Photovoltaic inverter seamlessly transitions from solar energy sourcing to alternative power sources such as batteries or generators, thereby ensuring a more stable and adaptable energy supply for the PVWPS system.
Representative of modern inverters, the CHRH FG series photovoltaic inverter exemplifies a multitude of functionalities, thereby enhancing the overall efficiency of the PVWPS system.
2. Diminishing Operational And maintenance Costs
Pardo, M (2019) indicated that in countries with abundant solar irradiance (such as Spain), solar energy serves as an available green alternative source, characterized by negligible electricity costs and significantly reduced environmental impact. In the investigation conducted by Valer, L. R.(2016), the utilization of photovoltaic inverters within Photovoltaic Pumping Systems (PVPS) was underscored for its multifaceted attributes. For instance, employing photovoltaic inverters facilitates the integration of locally manufactured pumps, which need not be exclusively designed for photovoltaic applications, thereby affording ease of replacement and diminished maintenance costs.
Moreover, Valer, L. R. (2016) illustrated photovoltaic inverters empower pumps to operate within power ranges exceeding those typical of most commercial photovoltaic pumping systems. Lifecycle cost analyses conducted between conventional pump systems (PVPS-c) and Variable Speed Drive-equipped pump systems (PVPS-vsd) elucidate that photovoltaic inverters can further bolster the economic competitiveness of PVPS.
These aforementioned advantages conspicuously resonate within the CHRH FG series photovoltaic inverters. The CHRH FG series photovoltaic inverters encompass an array of power ranges, adeptly aligning with pumps of varying power capacities, thereby concomitantly curbing operational and maintenance expenditures.
Conclusion:
Based on the aforementioned investigations, this study reveals that within photovoltaic irrigation systems, exemplified by the CHRH FG photovoltaic inverter, there is an enhancement in operational efficiency, alongside reductions in operating and maintenance costs.
Reference:
Peter G, 2022, Updated Principles of Sustainable Engineering, Slovenia, University of Maribor.
Lubis, A. et al., 1990, ‘An experience on the operation and maintenance of dual photovoltaic pumping system’, Energy and the Environment, pp. 299–303.
Pardo, M.Á. et al., 2019 ‘Standalone Direct Pumping Photovoltaic System or energy storage in batteries for supplying irrigation networks. cost analysis', Science of The Total Environment, pp. 821–830.
Valer, L.R. et al., 2016 ‘Variable-speed drives in photovoltaic pumping systems for irrigation in Brazil’, Sustainable Energy Technologies and Assessments, pp. 20–26.
