用于农业应用的独立光伏电池水泵系统的最佳控制的能量管理策略
Energy management strategy for an optimum control of a standalone photovoltaic-batteries water pumping system for agriculture applications
摘要：
使用多种能源抽水是在偏远或干旱地区供应饮用水的理想解决方案。本文提出了一种有效的控制和能量管理策略的独立光伏电池水泵系统的农业应用。该系统以光伏太阳能电池板为一次能源，以铅酸电池为二次能源，分别为直流无刷电机和离心泵供电。能量管理策略使用智能算法来满足电机所需的能量，同时将电池的充电状态保持在安全裕度之间，以消除电池的完全放电和破坏。漂移是光伏系统中的一个主要问题;当太阳辐射迅速变化时会发生这种现象。经典的MPPT算法不能解决这个问题，为此，本文提出了一种改进的P &O算法，并与传统的P &O算法进行了比较，结果表明该算法是有效的。计算机仿真结果证实了所提出的能量管理算法在随机气象条件下的有效性。
英文摘要：
Pumping water using multiple energy sources is the ideal solution for supplying of potable water in isolated or arid areas. In this paper, an effective control and energy management strategy for a stand-alone photovoltaic-batteries water pumping system for agriculture applications is presented. The system is composed of photovoltaic solar panels as primary energy sources, and Lead-Acid batteries as seconder energy sources to supply the brushless DC motor and the centrifugal pump. The energy management strategy uses an intelligent algorithm to satisfy the energy demanded by the motor, also to maintain the state-of-charge of the battery between safe margins in order to eliminate the full discharge and the destruction of the batteries. Drift is a major problem in photovoltaic systems; this phenomenon occurs when the solar irradiation changes rapidly. Classical MPPT algorithms do not solve this problem, for this reason a modified P\&O has been implemented, the obtained results shown the efficiency of the algorithm compared to the conventional P\&O. Computer simulation results confirm the effectiveness of the proposed energy management algorithm under random meteorological conditions.
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