基于Fibonacci数列的MPPT仿真与初步实验  

MPPT simulation and preliminary experiment based on Fibonacci numbers

作　　者：张强[1] 任小永[1] 陈乾宏[1] 于锁平 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016 [2]立德电子(江苏)有限公司,江苏镇江212000

出　　处：《电工电能新技术》2013年第2期28-33,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金(51077069);江苏省自然科学基金(BK2009372);教育部博士点基金(20103218110013)

摘　　要：基于Fibonacci数列的MPPT具有大范围搜索,不受环境影响,无初值问题等优点。本文介绍了该方法的基本原理及其软件实现,并基于图形拟合的方法建立太阳能电池数学模型,对其采用VB和Simulink联合仿真,以实现对每步寻优过程内部参数的实时观察。结果表明,此仿真可以很直观地看到Fibonacci搜索算法的每步过程,验证了此算法的准确性。同时依据仿真数据和波形,提出对收敛判定条件进行重新选择,以提高搜索算法的速度。实验采用Boost电路作为主电路,用dspic33f502芯片在MAPLAB平台上进行软件编译,对一块250W的太阳能电池进行了此MPPT算法的研究。实验结果验证了Fibonacci数列MPPT的算法,同时,也验证了仿真的准确性与对收敛判定条件重新选择的可行性。The MPPT based on Fibonacci numbers has some advantages： large searching range, not affected by en-vironment, no initial value problem, etc. This paper introduces the basic principle and the software realization of this method, establishes solar battery mathematical model based on graphic fitting method, and simulates it by Sim- ulink combined with VB in order to realize the real time observation for the internal parameter in each optimizing step. The result shows that this simulation can be very intuitive to see each step of Fibonacci searching method, and verifies the accuracy of the method. At the same time, it puts forward that the method can reselect the condi-tion of convergence, in order to improve the efficiency of the method. In the experiment, Boost circuit is used as main circuit, with using dspic33fS02 chip to program in the MAPLAB platform, and to research the MPPT method with a piece of 250W solar battery. The experimental result verifies the MPPT based on Fibonacci numbers, and al-so verifies the accuracy of the simulation and feasibility to reselect the condition of convergence.

关 键 词：Fibonacci数列MPPT算法 VB和Simulink结合 仿真与实验 

分 类 号：TM615[电气工程—电力系统及自动化]