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首页> 外文期刊>Power Electronics, IET >Linear open circuit voltage-variable step-size-incremental conductance strategy-based hybrid MPPT controller for remote power applications
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Linear open circuit voltage-variable step-size-incremental conductance strategy-based hybrid MPPT controller for remote power applications

机译：基于线性开路电压可变步长增量电导策略的混合MPPT控制器，用于远程电源应用

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摘要

This study presents a novel hybrid maximum power point tracking (HMPPT) controller capable of harvesting maximum power from solar panels in a remote power park which can be used for applications such as outdoor uninterruptible power supply, cellular phone and laptop chargers. The proposed HMPPT controller combines two MPPT methods, namely the linear open-circuit voltage method and variable step-size incremental conductance method and it has a simple and robust way of tracking MPP based on the relationship between the solar panel characteristics and load line. A 100 W photovoltaic (PV) generation system with soft switched interleaved flyback (SSIFB) converter is built to implement the proposed HMPPT algorithm. The soft switching of flyback converters in the proposed PV-SSIFB system is achieved by zero voltage switching-pulse width modulation technique. The steady-state performance under various constant irradiations and transient characteristics for rapidly varying irradiations and load changes are investigated. The effectiveness of the controller in the recommended circuit is verified by the simulation results and validated using a prototype model. Both simulation and experimental results show several advantages, namely accuracy, high tracking speed, minimum power loss and increased adaptability for a wide range of irradiations and load.
机译：这项研究提出了一种新颖的混合式最大功率点跟踪（HMPPT）控制器，该控制器能够从偏远园区的太阳能电池板中获取最大功率，该控制器可用于室外不间断电源，手机和笔记本电脑充电器等应用。提出的HMPPT控制器结合了线性开路电压法和可变步长增量电导法这两种MPPT方法，并具有一种基于太阳能电池板特性和负载线之间关系的简单而可靠的MPP跟踪方法。建立具有软开关交错反激式（SSIFB）转换器的100 W光伏（PV）发电系统，以实现所提出的HMPPT算法。所提出的PV-SSIFB系统中的反激转换器的软开关是通过零电压开关脉冲宽度调制技术实现的。研究了在各种恒定辐照下的稳态性能以及快速变化的辐照和负载变化的瞬态特性。仿真结果验证了推荐电路中控制器的有效性，并使用原型模型对其进行了验证。仿真和实验结果均显示出几个优点，即准确性，高跟踪速度，最小的功率损耗以及对多种照射和负载的适应性增强。

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