高佳俊, 李维波, 李齐, 等. 基于变步长扰动逼近法的移动式在线光伏充电MPPT技术[J]. 中国舰船研究, 2021, 16(4): 208–216. doi: 10.19693/j.issn.1673-3185.01948
引用本文: 高佳俊, 李维波, 李齐, 等. 基于变步长扰动逼近法的移动式在线光伏充电MPPT技术[J]. 中国舰船研究, 2021, 16(4): 208–216. doi: 10.19693/j.issn.1673-3185.01948
GAO J J, LI W B, LI Q, et al. Mobile photovoltaic online charging MPPT technology based on variable step size disturbance approximation method[J]. Chinese Journal of Ship Research, 2021, 16(4): 208–216. doi: 10.19693/j.issn.1673-3185.01948
Citation: GAO J J, LI W B, LI Q, et al. Mobile photovoltaic online charging MPPT technology based on variable step size disturbance approximation method[J]. Chinese Journal of Ship Research, 2021, 16(4): 208–216. doi: 10.19693/j.issn.1673-3185.01948

基于变步长扰动逼近法的移动式在线光伏充电MPPT技术

Mobile photovoltaic online charging MPPT technology based on variable step size disturbance approximation method

  • 摘要:
      目的  为了提高移动式在线光伏充电装置的充电效率、安全性和速度,提出基于变步长扰动逼近法的移动式在线光伏充电最大功率点跟踪(MPPT)技术。
      方法  通过将高频逆变器与隔离变压器共同作为MPPT载体,去除传统光伏充电拓扑装置中的前级DC/DC结构,并将充电控制与高频逆变的脉冲调制相结合,最终将高频隔离、MPPT跟踪和充电控制三大功能集成一体。同时,根据蓄电池的不同剩余电量状态,提出三段式充电控制策略。
      结果  仿真分析与现场测试结果表明,当改变光伏板的光照强度时,该装置可以稳定地跟踪光伏板的最大功率点,并按照设定的充电方案,在3个阶段下实现了对蓄电池的高效充电;实测的整体充电效率可以保持在92%以上。
      结论  该装置和控制策略可以提高光伏板对蓄电池的充电效率,同时满足快速、安全充电的要求。

     

    Abstract:
      Objective  In order to improve the charging efficiency, safety and speed of mobile online photovoltaic (PV) charging devices, a type of mobile online PV charging maximum power point tracking (MPPT) technology based on the variable step size disturbance approximation method is proposed.
      Methods  By combining a high-frequency inverter and isolation transformer as the MPPT carrier, the former DC/DC structure of traditional PV charging topology devices is removed, charging control is combined with the pulse modulation of the high-frequency inverter, and the three functions of high-frequency isolation, MPPT tracking and charging control are finally integrated into one. At the same time, according to the different states of the remaining power battery, a three-stage charging control strategy is proposed.
      Results  Simulation analysis and field test results show that this device can track the maximum power points of PV panels stably when their illumination intensity changes, and the battery can be charged efficiently in the three stages according to the set charging scheme. The measured overall charging efficiency can be maintained above 92%.
      Conclusion  This device and control strategy can improve PV panel-to-battery charging efficiency and meet the requirements of fast and safe charging.

     

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