结合智能数据库的电导增量MPPT系统研究  

Research of Incremental Conductance MPPT System Based on Intelligent Database

作　　者：赵立辉[1] 霍春宝[1] 杨红喆[2] 

机构地区：[1]辽宁工业大学电气工程学院,锦州121001 [2]北京理工大学计算机学院,北京100083

出　　处：《科学技术与工程》2013年第27期8145-8149,共5页Science Technology and Engineering

基　　金：辽宁省自然基金项目(2011201035);辽宁省教育厅科技项目(L2012230)资助

摘　　要：针对太阳能光伏发电系统的功率输出非线性特点，提出一种结合数据库，利用电导增量实现最大功率跟踪的系统。论文根据光伏阵列的特性，建立光伏系统数学模型，采用电导增量法建立历史和实时数据库，通过数据库查询尽快跟踪功率变化，调整占空比，达到实时最大功率跟踪。系统采用MSP430作为控制器，定时方式产生PWN控制变换器开关。研究结果表明，系统可以快速跟踪最大功率变化，提高跟踪精度和输出功率，相对传统电导增量法本文方法跟踪速度提高5％-20％。In view of the nonlinear characteristics of power output for the solar photovoltaic power generation system, the system based on the incremental conductance maximum power point tracking of database is proposed. According to the characteristic of photovoltaic array, a mathematical model for the photovohaic system and the historical and real-time method is established; by querying database as soon as possible, adjusting the duty cycle, real-time maximum power point tracking is achieved. MSP430 is used as the controller; the PWM is used as the control switch in the system. Research results show that the maximum power point tracking system is realized, the tracking accuracy and power output are improved, comparing with the traditional incremental conductance method the tracking speed is improved by 5% -20%.

关 键 词：光伏发电 最大功率跟踪 电导增量法 数据库 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]