电网技术Issue(1)：3689-3694,6.DOI:10.13335/j.1000-3673.pst.2014.01.014
融合最大功率点追踪和寻光感知技术的太阳能智能跟踪系统设计
Design of an Intelligent Solar Energy Tracking System Based on Maximum Power Point Tracking With Light Search Perceptive Technology
摘要
Abstract
In allusion to such defects of current photovoltaic (PV) cell generation system adopting solar energy tracking technology as larger tracking error, weak anti-interference performance and higher system energy consumption, through integration of maximum power point tracking (MPPT) with intelligent light search perceptive technology an intelligent solar energy tracking system for PV cells is designed to implement the maximization of photon to current conversion efficiency. Utilizing the principle of projection a light search sensor is developed and adding light intensity sensing unit to the sensor an intelligent light search sensing module is formed to eliminate the affect of climatic conditions to implement the all-weather operation of the designed tracking system. To reduce the power consumption of the designed system, the tracking mode is designed as the discrete one, that is, after the necessary detection and control of such peripheral equipments as electric motor and its driving module, the light search sensing module and so on while the fixed clock signal arrives the designed system is in the standby status when the designed system is idle. The perturbation and observation method to implement the MPPT is improved and optimized, and a differentiation perturbation mode is proposed to avoid the oscillation near the maximum power point and malfunction during light intensity variation due to traditional perturbation and observation method. Experimental verification results show that the tracking resolution of the designed tracking system can achieve to 0.344°, the system error is less than 2.5° and the charging efficiency of the PV cells can be increased by more than 40%.关键词
太阳能/光伏电池/最大功率点跟踪/寻光感知模块/离散式跟踪Key words
solar energy/PV cell/maximum power point tracking/light search perception module/discrete tracking分类
信息技术与安全科学引用本文复制引用
施云波,葛春志,王萌萌,汪亚东,渠立亮..融合最大功率点追踪和寻光感知技术的太阳能智能跟踪系统设计[J].电网技术,2014,(1):3689-3694,6.基金项目
黑龙江省自然科学基金重点项目(ZD201217977)。@@@@Key Project Supported by Natural Science Foundation of Heilongjiang Province (ZD201217977) （ZD201217977）
