2.5kWp光伏水泵系统潜水泵的设计分析

针对光伏系统的独特性，从增大水磁的高效区，提高电机的效率、结构上保证湿式电机的绝缘可靠以及提高整个光伏水泵可靠性等诸方面介绍限光伏水泵的设计特点，并对试验结果做了分析。     

基于加权模糊优先相似法评价光伏系统经济性

讨论了光伏系统的典型应用系统－光伏水泵安装站址的环境条件对其经济性的影响，给出了经济性评价的因素指标体系。以此为基础，采用加权模糊优先相似法对几个将要实际安装光伏水泵的站址进行了经济性评价，其结果可为决策提供参考。     

采用开关磁阻电动机的光伏水泵系统

利用形状磁阻电动机（ＳＲＭ）结构简单、坚固及运行效率高等优点，将ＳＲＭ与光伏系统相结合，用单片控制的ＤＣ／ＤＣ变换器和ＳＲＭ驱动器，使光伏水泵系统实现最佳运行。结果表明，采用开关磁阻电动机的光伏水泵系统是除直流电动机和异步电动机之外的另一种比较理想的光伏水泵驱动系统。     

基于空间矢量PWM法的光伏水泵变频控制系统

介绍一种基于空间矢量PWM控制的光伏水泵变频控制系统。该空间矢量PWM算法具有对光伏阵列母线电压的动态补偿功能，保证在光伏阵列工作电压大范围变化条件下，变频驱动电机满足恒磁通调速控制。同时结合光伏水泵系统的工作特点，提出了一种简单实用的光伏阵列最大功率点跟踪控制方式，稳定可靠地实现了系统的最大功率点跟踪控制。     

太阳能光伏水泵和照明综合应用系统

本文介绍光伏水泵和照明综合应用系统,以及光伏水泵系统的发展情况。利用太阳能光伏水泵系统解决无电地区农牧民人蓄饮水、农田灌溉问题是一条经济可行的途径。光伏水泵系统具有广阔的推广应用前景。     

光伏水泵系统在我国西部推广应用的可行性分析

介绍了太阳能光伏水泵技术的发展现状及技术水平,并对西部地区的太阳能资源和水资源作了概述。分析了在西部地区推广光伏水泵系统的可行性。用光伏水泵系统解决西部无电地区农牧民的饮水和农业用水是一条经济可行的途径。     

光伏水泵系统的数字仿真

本文扼要介绍了光伏水泵系统的一种数字仿真及CAD程序包ITEPVP。应用该程序可有效地在计算机上重现任一光伏水泵—管道系统中任意有意义变量之间的特性,若和优化程序配合使用,便可实现任意光伏水泵系统的优化设计。它是研究、发展光伏水泵系统的有力工具。     

小型光伏水泵与照明综合应用系统的设计

介绍了光伏水泵与照明综合应用系统的基本组成和工作原理,对光伏水泵与照明综合应用系统的优化匹配设计进行了分析和说明。     

NSP光伏水泵技改工程竣工投产

ＮＳＰ光伏水泵技改工程竣工投产南方由皖南微型水泵厂与合肥工业大学能源研究所共同研制开发的ＮＳＰ光伏水泵，于１９９６年８月２６日在皖南微型水泵厂新厂区举行技改工程竣工投产典礼。参加典礼的领导、来宾和各界人士共２００多人。投产典礼隆重、热烈。ＮＳＰ光伏水...     

光伏水泵技术及应用

太阳能抽水技术目前主要有两类：太阳能潜力水泵技术和太阳能光伏水泵技术，由于后者有其独特的优点，如操作维护非常简便、寿命长等，对人们有极大的吸收力。本文就这一技术及应用情况作一介绍。     

Improving the effectiveness of a photovoltaic water pumping system by spraying water over the front of photovoltaic cells

The photovoltaic cells will exhibit long-term degradation if the temperature exceeds a certain limit. Photovoltaic cells are the heart of photovoltaic water pumping systems. In order to utilize PV power and increase photovoltaic water pumping system efficiency, it is necessary to keep PV cell temperature and cell reflection as low as possible. The purpose of this study is to investigate the possibility of improving the performance of a photovoltaic water pumping system. This is performed by spraying water over the photovoltaic cells. The results are compared with traditional systems. Experimental results show that the cells power is increased due to spraying water over the photovoltaic cells. This can significantly increase the system and subsystem efficiency and the pump flow rate when operating under different heads. Measurements of the short circuit current of the module, which is nearly temperature-independent, indicated that the water spray improved the system optical performance.     

通用型水泵电机的光伏驱动系统研究

目前光伏水泵的推广面临两个方面的障碍,一方面是应用较多的专用型光伏机泵成本较高;另一方面利用通用变频器驱动通用机泵时光伏利用率低。为了克服这些不足,设计了一种针对通用型水泵电机的光伏驱动系统。系统基于数字信号控制器dsPIC30F2010和IPM智能功率模块,实现了安全稳定运行、真正的最大功率跟踪（TMPPT）及模块化结构。分析了系统的硬件结构,探讨了系统的控制思想及实现,并用实验结果证明了设计的正确性。     

Modelling photovoltaic water pumping systems and evaluation of their CO2 emissions mitigation potential

In photovoltaic (PV) water pumping design, the accurate prediction of the water flow is a key step for optimized implementation and system robustness. This paper presents a model to characterize the motor-pumps subsystems used in PV pumping installations. The model expresses the water flow output (Q) directly as a function of the electrical power input (P) to the motor-pump, for different total heads. The actual model is developed using the experimental results obtained by the use of several motor-pump subsystems of different types and technologies. This work details the investigations concerning centrifugal and positive displacement motor-pump subsystems. The experimental tests are used to validate the developed model. Based on the motor-pump subsystem model, a method is proposed to estimate the amount of carbon dioxide (CO₂) emissions saved by the use of water pumping facilities powered by a photovoltaic array instead of diesel fuelled generators. This work shows that the dissemination of PV water systems not only improves the living conditions in remote areas, but is also environment friendly.     

Optimal sizing of photovoltaic pumping system with water tank storage using LPSP concept

This paper recommends an optimal sizing model, to optimize the capacity sizes of different components of photovoltaic water pumping system (PWPS) using water tank storage. The recommended model takes into account the submodels of the pumping system and uses two optimization criteria, the loss of power supply probability (LPSP) concept for the reliability and the life cycle cost (LCC) for the economic evaluation.With this presented model, the sizing optimization of photovoltaic pumping system can be achieved technically and economically according to the system reliability requirements. The methodology adopted proposes various procedures based on the water consumption profiles, total head, tank capacity and photovoltaic array peak power. A case study is conducted to analyze one photovoltaic pumping project, which is designed to supply drinking water in remote and scattered small villages situated in Ghardaia, Algeria (32°29′N, 3°40′E, 450 m).     

Systematic procedures for sizing photovoltaic pumping system,using water tank storage

In this work, the performances of the photovoltaic pumping destined to supply drinking water in remote and scattered small villages have been studied. The methodology adopted proposes various procedures based on the water consumption profiles, total head, tank capacity and photovoltaic array peak power. A method of the load losses probability (LLP) has been used to optimize sizing of the photovoltaic pumping systems with a similarity between the storage energy in batteries and water in tanks. The results were carried out using measured meteorological data for four localities in Algeria: Algiers and Oran in the north, Bechar and Tamanrasset in the south. The results show that the performance of the photovoltaic pumping system depends deeply on the pumping total head and the peak power of the photovoltaic array. Also, for the southern localities, the LLP method shows that the size of the photovoltaic array varies versus LLP on a small scale. On the other hand, for the northern localities, the sizing of the photovoltaic array is situated on a large scale power. Because of the current high crud-oil price, the photovoltaic pumping still to be the best adopted energy resource to supply drinking water in remote and scattered villages.     

Solar water pumping

The principles of solar water pumping are briefly described. The mechanical energy needed for pumping water may be produced by thermodynamic, or direct-conversion methods. In thermodynamic conversion a fluid with high internal energy is produced in solar collectors or concentrators. The internal energy of the fluid may be utilized in Rankine-, Brayton-, or Stirling-cycles or in specially designed devices. The nature of irrigation in the arid regions calls for scattered water pumping stations, hence small solar pumps. These pumps may be mass produced and delivered to the site. The direct conversion includes photovoltaic, themoelectric and thermionic processes. With the current prices of solar cells photovoltaic water pumping seems to be economically competitive with the current solar Rankine-cycle system in the power ranges of below 5 kW, especially when both systems have to be imported by a developing country.     

Small-scale solar pumping: The technology

The present work is concerned with the direct use of solar energy in water pumping. The available technologies of photovoltaic, thermal and other solar pumping systems are examined. It appears that the most suitable system for solar pumping is the one that satisfies several requirements such as: no movable mechanical parts, reasonable thermal efficiency, minimum manufacturing cost and compact in size.     

Economic viability of photovoltaic water pumping systems

A comparison of the economic viability of photovoltaic and diesel water pumping systems is presented for system sizes in the range 2.8 kW_p to 15 kW_p. Actual performance data from installed systems are employed for the base case. Sensitivity analysis is carried out to generalize results for other locations and conditions. The effect of system oversizing due to mismatch of water supply and demand patterns on the economic viability of PV water pumping system is illustrated based on real data and three-year operational experience of eight installations. Investment prospects in PV water pumping applications for different selling price scenarios of water have been investigated.     

A fuzzy global efficiency optimization of a photovoltaic water pumping system

This paper presents an on-line fuzzy optimization of the global efficiency of a photovoltaic water pumping system driven by a separately excited DC motor (DCM), a permanent magnet synchronous motor (PMSM), or an induction motor (IM), coupled to a centrifugal pump.The fuzzy optimization procedure stated above, which aims to the maximization of the global efficiency, will lead consequently to maximize the drive speed and the water discharge rate of the coupled centrifugal pump. The proposed solution is based on a judicious fuzzy adjustment of a chopper ratio which adapts on-line the load impedance to the photovoltaic generator (PVG). Simulation results show the effectiveness of the drive system for both transient and steady state operations. Hence it is suitable to use this fuzzy logic procedure as a standard optimization algorithm for such photovoltaic water pumping drives.     

Assess the potential of solar irrigation systems for sustaining pasture lands in arid regions – A case study in Northwestern China

The combined impact of global climate change and increasing human activities has led to the severe deterioration of grasslands in China. Using the solar irrigation systems is an effective way for sustaining pasture lands in arid regions. A solar irrigation system is the device that uses the solar cell from the sun’s radiation to generate electricity for driving the pump. And photovoltaic pump consists of an array of photovoltaic cells and pumps water from a well or reservoir for irrigation. Although ecologists and organizations constantly work and find ways to conserve grasslands through irrigation systems that use solar energy, issues on water resources are not yet thoroughly discussed. This paper takes into account the main factors in the study of water resources, including precipitation and groundwater, to analyze the feasibility of using a photovoltaic (PV) pumping irrigation. The appropriate area for such a PV pumping irrigation in Qinghai Province is also presented. The results show that the grasslands appropriate for PV pumping cover about 8.145 million ha, accounting for 22.3% of the grasslands in the entire province. Finally, the problems and countermeasures of PV pumping irrigation, including the impact on regional water balance, groundwater level and highland permafrost, are also considered.