Dual stage MPPT control method of PSO and INC
-
摘要: 通过对光伏发电最大功率点跟踪系统的研究,提出了PSO与电导增量法的双级最大功率跟踪(MPPT)控制算法。该算法能很好地解决传统电导增量法在采用较大跟踪步长时跟踪精度差,采用较小跟踪步长时跟踪速度慢,动态跟踪过程中功率震荡大的问题。所提出的算法包含最优占空比预测和最大功率点跟踪两个阶段。最优占空比预测阶段采用改进的PSO算法搜索最大功率点附近的工作电流和工作电压,然后根据搜索到的电压和电流计算最大功率点附近的最优占空比,该阶段能解决传统的电导增量法在采用较小步长时存在的跟踪速度慢、功率震荡大等问题;在最大功率点跟踪阶段接收上一阶段所搜索到的最优占空比,当电导增量法所产生的占空比接近最优占空比时,采用电导增量法进行控制,否则采用上一环节的最优占空比进行控制。仿真实验结果表明,PSO与电导增量法的双级MPPT控制算法跟踪速度快,跟踪精度高,功率震荡小,能很好地实现最大功率点跟踪。Abstract: Studied the maximum power point tracking system, dual stage Maximum Power Point Tracking (MPPT) method of Particle Swarm Optimization (PSO) and incremental conductance algorithm was proposed. The proposed method can solve the problems of incremental conductance algorithm's worse tracking precision under large step and slower tracking speed and larger power fluctuation in the dynamic tracking process under small step tracking. The proposed method consists of two stages:the stage of optimal duty prediction and the stage of MPPT. The stage of optimal duty prediction uses improved PSO to search the working voltage and current near the maximum power point of the photovoltaic cells, next calculates the optimal duty according to the searched voltage and current. This stage can solve the problems of slower tracking speed and larger power fluctuation under small step tracking. The optimal duty is received and the system is controlled by the incremental conductance algorithm when the duty generated by the incremental conductance algorithm is closed to the optimal duty, or the optimal duty is used to control system in the stage of MPPT. Simulation results show that the proposed method can acquire faster tracking speed, have better tracking precision, and reduce the power fluctuation in the dynamic tracking process. So the proposed method can achieve the maximum power point tracking bitterly.
-
[1] Xue Jiyuan, Feng Wenlin, Zhao Fen, et al. Output characteristic and application for solar panel[J]. Infrared and Laser Engineering, 2015, 44(1): 176-181. (in Chinese)薛继元, 冯文林, 赵芬, 等. 太阳能电池板的输出特性与实际应用研究[J]. 红外与激光工程, 2015, 44(1): 176-181. [2] Yan Liyang, Xu Di, Ge Aiming. Novel maximum power point tracking method under non-uniformin solation conditions[J]. Infrared and Laser Engineering, 2013, 42(8): 2173-2180. (in Chinese)严力羕, 徐迪, 葛爱明. 不均匀光照情况下太阳能最大功率追踪算法[J]. 红外与激光工程, 2013, 42(8): 2173-2180. [3] Chen Yaai, Zhou Jinghua, Li Jin, et al. Application of gradient variable step size MPPT algorithm in photovoltaic system[J]. Proceedings of the CSEE, 2014, 34(19): 3156-3161. (in Chinese)陈亚爱, 周京华, 李津, 等. 梯度式变步长MPPT算法在光伏系统中的应用[J]. 中国电机工程学报, 2014, 34(19): 3156-3161. [4] Chen Lingjun, Dai Yuxing, Quan Huimin. Application in MPPT of photovoltaic power generation based on improved perturbation and observation method[J]. Chinese Journal of Power Sources, 2016, 40(3): 614-616. (in Chinese)陈令军, 戴瑜兴, 全惠敏. 基于改进的扰动观察法在光伏发电MPPT中的应用[J]. 电源技术, 2016, 40(3): 614-616. [5] Zhou Jianping, Zhu Jianping. MPPT control research using adaptive variable step size incremental conductance[J].Journal of shanghai University of Electric Power, 2014, 30(3): 235-239. (in Chinese)周建萍, 朱建萍. 自适应变步长电导增量的最大功率点跟踪控制的研究[J]. 上海电力学院学报, 2014, 30(3): 235-239. [6] Esram T, Chapman P L. Comparison of photovoltaic array maximum power point tracking techniques[J]. IEEE Transactions on Energy Conversion, 2007, 22(2): 439-449. [7] Huang Yao, Huang Hongquan. Maximum power point tracking control method based on incremental conductance[J]. Modern Electronics Technique, 2008, 31(22): 18-19. (in Chinese)黄瑶, 黄洪全. 电导增量法实现光伏系统的最大功率点跟踪控制[J]. 现代电子技术, 2008, 31(22): 18-19. [8] Onat N. Recent developments in maximum power point tracking technologies for photovoltaic systems[J]. IEEE Transactions on International Journal of Photoenergy, 2010, 20(10): 1-11. [9] Xue Jiyuan, Feng Wenlin, Yang Xiaozhan. Maximum power point tracking for photovoltaic panel based on FPGA[J]. Infrared and Laser Engineering, 2014, 43(8): 2699-2703. (in Chinese)薛继元, 冯文林, 杨晓占. 基于FPGA的光伏电池板最大功率跟踪[J]. 红外与激光工程, 2014, 43(8): 2699-2703. [10] Villalva, Marcelo G, Ruppert E. Analysis and simulation of the P O MPPT algorithm using a linearized PV array model[C]//35th Annual Conference of IEEE Industrial Electronics, 2009, 1-6: 215-220. -
点击查看大图
计量
- 文章访问数: 387
- HTML全文浏览量: 70
- PDF下载量: 127
- 被引次数: 0
下载:
