Please wait a minute...
J4  2012, Vol. 46 Issue (8): 1490-1497    DOI: 10.3785/j.issn.1008-973X.2012.08.021
    
A novel maximum power point tracking method in
three-phase photovoltaic system
YANG Tao, LU Zheng-yu
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Download:   PDF(0KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

In order to improve the efficiency of photovltaic devices, the maximum power point tracking (MPPT) method is studied. Perturbation and observation method (P&O) is one of the popular methods though, it is unable to determine the right tracking direction when the weather changes rapidly. In order to reduce the mistake of MPPT, the concept of acceleration of illumination changing is introduced to rebuild the process of illumination changing based on dP-P&O method. Meanwhile, this paper analyzes the relationship between the power of PV cells and the power of the inverter by power equilibrium principle, and gets a conclusion that the MPPT method can be implemented by compartng the sequential sampled output current of the inverter. This method is not required to detect the output voltage and current of photovoltaic cells, so the cost of system is reduced.Simulation and experimental results show that the method is available and the system can maintain stability.



Published: 23 September 2012
CLC:  TM 711  
  TM 7 6  
Cite this article:

YANG Tao, LU Zheng-yu. A novel maximum power point tracking method in
three-phase photovoltaic system. J4, 2012, 46(8): 1490-1497.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2012.08.021     OR     http://www.zjujournals.com/eng/Y2012/V46/I8/1490


三相光伏系统中一种新的最大功率点追踪方法

为了提高光伏器件利用效率,对最大功率点跟踪(MPPT)方法进行研究.针对扰动观察法在天气快速变化时,会产生误判这一问题,在功率差值扰动观察法(dP-P&O)的基础上,引入光照变化加速度的概念,对光照变化过程进行更精确的建模,减少最大功率跟踪过程中的误判现象.同时,利用功率守恒原理,对光伏阵列输出和逆变器输出功率之间的关系进行分析,得出通过比较扰动前后并网电流的变化来实现MPPT控制的方法.该方法不需要对光伏阵列的输出电压和电流进行检测,降低了光伏系统的成本.仿真和实验结果表明,该方法是可行的,并且系统能够保持稳定性.

[1] XIAO Weidong, WILLIAM G, DUNFORD. A modified adaptive hillClimbing MPPT method for photovoltaic power systems [C]∥ IEEE Power Electronics Specialists Conference. Aachen, Germany: IEEE 2004, (3): 1957-1963.
[2] CARRASCO J M, FRANQUELO L G, BIALASIEWICZ J T, et al. Powerelectronic systems for the grid integration of renewable energy sources [J]. A Survey. IEEE Trans. Ind. Electron, 2006, 53(4): 1002-1016.
[3] GUERRERO J M, BLAABJERG F, ZHELEV T, et al. Distributed generation: Toward a new energy paradigm [J]. Industrial Electronics Magazine, 2010, 1,4 (1): 52-64.
[4] ZHANG Limei, WANG Shaolin, ZHAO Yunjun, et al. Prospects for and applications to microgrid technology[C]∥ Power and Energy Engineering Conference (APPEEC). 2010 AsiaPacific, Chengdu. Chengdu: APPEEC 2010: 14, 28-31.
[5] LISERRE M, SAUTER T, HUNG J Y. Future Energy systems: Integrating renewable energy sources into the smart power grid through industrial electronics [J]. Industrial Electronics Magazine, 2011, l,4 (1): 18-37.
[6] HUA Chichang, SHEN Chiming. Comparative study of peak power tracking techniques for solar storage system [C]∥13th Annual Conference on Applied Power Electronics Conference and Exposition. Anaheim, Canada: IEEE, 1998, 2: 679-685.
[7] BLAABJERG F, TEODORESCU R, LISERRE M, et al. Overview of control and grid synchronization for distributed power generation systems [J]. IEEE Trans. Ind. Electron, 2006, 53(5): 1398-1409.
[8] ESRAM T, CHAPMAN P L. Comparison of photovoltaic array maximum power point tracking techniques [J]. Energy Conversion. IEEE Trans. Power Electronics, 2007, 22(2): 439-449.
[9] NICOLA F, GIOVANNI P, GIOVANNI S, et al. Optimization of perturb and observe maximum power point tracking method [J]. IEEE Trans. Power Electronics, 2005, 7, 20(4): 963-973.
[10] 任碧莹,申明,孙向东.一种新颖的光伏电池最大功率点跟踪方法[J].电力电子技术,2010,44(11): 10-12.
REN Biying, SHEN Ming, SUN Xiangdong.A novel maximum power point tracking method for photovoltaic cell [J].Power Electronics, 2010, 44(11): 10-12.
[11] 蒋永和.光伏并网电压型逆变器电压控制策略及MPPT研究[D].合肥:合肥工业大学,2007.
JIANG Yonghe.Research on VSVC method and MPPT of photovoltaic gridconnected system [D].He fei: He Fei Industry University, 2007.
[12] 钱嘉怡,朱东柏,王梓.光伏系统MPPT控制方法的研究 [J].价值工程,2011,10(10): 157-158.
QIAN Jiayi, ZHU Dongbai, WANG Zi. Research on power point tracking in photovoltaic system [J]. Value Engineering, 2011, 10(10): 157158.
[13] 罗明,杨金明.双级式光伏系统最大功率点跟踪研究[J].电力电子技术,2009,5(5): 20-21.
LUO Ming, YANG Jinming. Research on MPPT of the doublestage PV system [J]. Power Electronics, 2009, 5(5): 20-21.
[14] DEZSO S, REMUS T, JOCHEN H, et al. Optimized maximum power point tracker for fastchanging environmental conditions [J]. IEEE Trans. Industrial Electronics, 2008, 7, 55(7): 2629-2637.
[15] PETRONE G, SPAGNOLO G, TEODORESCU R, et al. Reliability issues in photovoltaic power processing systems [J]. IEEE Trans. Ind. Electron, 2008,55 (7): 2569-2580.
[16] SERA D, KEREKES T, TEODORESCU R, et al. Improved MPPT method for rapidly changing environmental conditions [J]. IEEE International Symposium on Power Electronics, 2006, 2: 1420-1425.
[17] FEMIA N, PETRONE G, SPAGNUOLO G, et al. A technique for improving P&O MPPT performances of doublestage gridconnected photovoltaic systems [J]. IEEE Transactions on Industrial Electronics, 2009, 1,56 (11): 4473-4482.
[18] MATSUI M, KITANO T, XU Dehong, et al. A new maximum photovoltaic power tracking control scheme based on power equilibrium at DC link [C]∥ IEEE Industry Application Conference. Phoenix, USA: IEEE, 1999: 804-809.
[19] ZARE F,LEDWICH G. A hysteresis current control for singlephase multilevel voltage source inverters: PLD implementation [J]. IEEE Trans. on Power Electronics,2002, 17 (5): 731-738.
[20] FEMIA N, PETERONE G, SPAGNUOLO G, et al. Optimization of perturb and observe maximum power point tracking method [J]. IEEE Trans. Power Electronics, 2005, 120 (4): 963 -973.

[1] YANG Tao,LI Quan-feng,JIN Xiao-guang,LU Zheng-yu. Control method of sensorless brushless DC motor
 in  load variation condition
[J]. J4, 2012, 46(5): 878-884.
[2] WANG Le-qin, LIU Jin-tao, ZHANG Le-fu, QIN Da-qing, JIAO Lei. Low flow's fluctuation characteristics in pump-turbine's
pump mode
[J]. J4, 2011, 45(7): 1239-1243.
[3] LEI Zhi-li, AI Xin, CUI Ming-yong, LIU Xiao. Simulation on series harmonic resonance of microgrid
based on modal assessment method
[J]. J4, 2011, 45(1): 178-184.