扰动观测法控制MPPT系统运动特性分析

doi:10.3969/j.issn.0372-2112.2015.07.021

电子学报 ›› 2015, Vol. 43 ›› Issue (7): 1388-1394.DOI: 10.3969/j.issn.0372-2112.2015.07.021

扰动观测法控制MPPT系统运动特性分析

倪雨, 郝帅翔

成都信息工程大学控制工程学院, 四川成都 610225

收稿日期:2014-01-03 修回日期:2014-06-27 出版日期:2015-07-25
- 通讯作者:
- 倪雨
- 作者简介:
- 郝帅翔 男,1988年3月生于河北石家庄.工学学士,2013毕业于成都信息工程学院控制工程学院电气工程及其自动化专业. E-mail:1276306896@qq.com
- 基金资助:
- 成都信息工程学院科研基金 (No.KYTZ201126); 成都信息工程学院科研人才基金 (No.J201210); 四川省教育厅重点项目 (自然科学类) (No.15ZA0187)

Motion Characteristics Analysis of P&Q Control MPPT System

NI Yu, HAO Shuai-xiang

College of Automatic Control Engineering, Chengdu University of Information Technology, Chengdu, Sichuan 610225, China

Received:2014-01-03 Revised:2014-06-27 Online:2015-07-25 Published:2015-07-25
- Supported by:
- Research Fund of Chengdu University of Information Technology (No.KYTZ201126); Scientific Research Talents Fund of Chengdu University of Information Technology (No.J201210); Key program of Education Department of Sichuan Province (No.15ZA0187)

摘要/Abstract

摘要：

扰动观测法是光伏系统MPPT算法中最常用的追踪算法.为了准确实现扰动观测法的追踪效果,该文基于扰动观测法等同于分段恒压控制的思想,推导了扰动观测法控制的调整时间公式,分析了扰动观测法控制MPPT系统工作点在光强突变时的运动特性,提出了"错误保持"、"正确保持"、"判断错误"和"判断正确"四个概念,总结了扰动观测法控制MPPT系统工作点的十二种运动情形及其动态效果,仿真结果和实验结果验证了四种典型运动情形.以此十二种运动情形为依据提出了一种对等评价不同扰动观测法控制性能优劣的评判方法,并应用该方法研究固定步长和变步长的暂态性能,结果表明,当判断错误时,变步长控制的动态性能比定步长的更差.该文研究结果有助于改善干扰控制法的动态性能.

关键词: 光伏电池, 最大功率点跟踪, 恒压法, 扰动观测法, 运动特性

Abstract:

A perturb and observe (P&Q) method is the most commonly used MPPT (maximum power point tracing) algorithm for photovoltaic system.For achieving accurate tracking effect,based on the idea of P&Q method equivalent to piecewise constant voltage method,the settled time formula of the P&Q control MPPT system was deduced in this paper.The motion characteristics of MPPT system operating point were analyzed when the light intensity changes,and then four concepts such as "wrong maintaining","right maintaining","misjudgment" and "good judgment",are proposed.It is summarized that 12 movement situations of P&Q control MPPT system operating point correspond to a dozen different dynamic effects;finally the simulations and experimental results verify 4 typical motions.Based on 12 motions,the fair evaluation method for different implementation of the P&Q method is presented,and then the method is used to study the fixed step and variable step method.Simulation results show that when a misjudgment occurs,the dynamic performance of a variable step size is less than the fixed step size.The results contribute to the improvement of the dynamic performance of the P&Q method.

Key words: photovoltaic cells, maximum power point tracing, constant voltage method, perturb and observe method, motion characteristics

中图分类号:

TM615

倪雨, 郝帅翔. 扰动观测法控制MPPT系统运动特性分析[J]. 电子学报, 2015, 43(7): 1388-1394.

NI Yu, HAO Shuai-xiang . Motion Characteristics Analysis of P&Q Control MPPT System[J]. Acta Electronica Sinica, 2015, 43(7): 1388-1394.

参考文献

[1] Femia N,Granozio D,Petrone G,et al.Predictive & adaptive MPPT perturb and observe method[J].IEEE Transactions on Aerospace and Electronic Systems,2007,43(3):934-950.
[2] Zhao Z M,Chen J,Sun X Y.Maximum Power Point Tracking Technology for Photovoltaic Power Generation[M].Publishing House of Electronics Industry,2012.
[3] Liu F R,Duan S X,Liu F,et al.A variable step size INC MPPT method for PV systems[J].IEEE Transactions on Industrial Electronics,2008,55(7):2622-2628.
[4] Jiang Y C,Jaber A.Adaptive step size with adaptive-perturbation-frequency digital MPPT controller for a single-sensor photovoltaic solar system[J].IEEE Transactions on Power Electronics,2012,28(7):3195-3205.
[5] Leyva R,Alonso C,Queinnec I,et al.MPPT of photovoltaic systems using extremum-seeking control[J].IEEE Transactions on Aerospace and Electronic Systems,2006,42(1):249-258.
[6] Kobayashi K,Matsuo H,Sekine Y.An excellent operating point tracker of the solar-cell power supply system[J].IEEE Transactions on Industrial Electronics,2006,53(2):495-499.
[7] Seok-I1 G,Seon-Ju A,Joon-Ho C,et al.Simulation and analysis of existing MPPT control methods in a PV generation system[J].Journal of International Council on Electrical Engineering,2011,1(4):446-451.
[8] Bratcu A I,Munteanu I,Bacha S,et al.Cascaded DC-DC converter photovoltaic systems[J].IEEE Transactions on Industrial Electronics,2011,58(2):403-411.
[9] Yazdani A,Dash P P.A control methodology and characterization of dynamics for a photovoltaic system interfaced with a distribution network[J].IEEE Transactions on Power Delivery,2009,24(3):589-594.
[10] Giovanni P,Giovanni S,Remus T,et al.Reliability issues in photovoltaic power processing systems[J].IEEE Transactions on Industrial Electronics,2008,55(7):2569-2580.
[11] Dezso S,Remus T,Jochen H,et al.Optimized maximum power point tracker for fast-changing environmental conditions[J].IEEE Transactions on Industrial Electronics,2008,55(7):2629-2637.
[12] Mario F,Alessandro G,Giovanni P,et al.Maximum power point tracking in a one-cycle-controlled single-stage photovoltaic inverter[J].IEEE Transactions on Industrial Electronics,2008,55(7):2684-2693.
[13] Nicola F,Gianpaolo L,Giovanni P,et al.Distributed maximum power point tracking of photovoltaic arrays:novel approach and system analysis[J].IEEE Transactions on Industrial Electronics,2008,55(7):2610-2621.

扰动观测法控制MPPT系统运动特性分析

Motion Characteristics Analysis of P&Q Control MPPT System

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