光伏水泵系统轻载运行仿真研究  

Research and Simulation of Light Load Operation of Solar Pump System

作　　者：赵亮[1,2] 王庆宇[1,3] 张永明[1] 张进[1] 

机构地区：[1]哈尔滨工业大学电气学院,黑龙江哈尔滨150001 [2]浙江大学建筑设计研究院有限公司,浙江杭州310028 [3]哈尔滨工业大学建筑设计研究院,黑龙江哈尔滨150090

出　　处：《计算机仿真》2015年第3期132-136,共5页Computer Simulation

基　　金：国家自然科学基金(51207035);黑龙江省自然科学基金(E201116;F201207);中国博士后科学基金(2012M510953);中央高校基本科研业务费专项资金资助(HIT.NSRIF.2012012)

摘　　要：在光伏水泵非并网光伏发电机优化控制的研究中,由于光伏水泵系统运行受外界环境影响较大,负载电机在低能量轻载励磁损耗较大,带来系统效率较低的问题。在分析水泵系统工作状态基础上,提出了一种采用矢量控制的弱磁控制投入轻载状态控制的方法。对相关的优化控制方法进行了初步的证明,并利用Matlab/Simulink工具建立光伏水泵系统异步电机部分的仿真模型,对优化前后的电机运行特性进行了仿真,验证节能方法的有效性。对电流、转矩以及转速仿真的结果表明,良好的磁通控制能够在轻载情况维持转速不变情况下对有限的太阳能电能进行高效的应用,并且系统有关转矩稳定性能也得到良好提升,为水泵系统稳定节能运行提供了优化的途径。This paper mainly discussed the model of photovoltaic pump system. As the efficiency of the system depends much on the environment,a further more research about its motor should be discussed,especially for the case of photovoltaic pumps working at light load state. Based on the analysis of vector control method of induction motor,a new flux weaken controlling method was given in place of the original constant flux control. In this paper,related excitation current optimization principle was proved,and the simulation verification based on Matlab / Simulink toolkit was given. Simulation results show that the new method can take a high efficient use of limited solar energy and related system performance has also been improved. With this method,technical support can be provided for the efficient operation of photovoltaic pumping systems.

关 键 词：光伏水泵系统 轻载运行 矢量控制 优化励磁电流法 

分 类 号：TK519[动力工程及工程热物理—热能工程]