In a conventional photovoltaic (PV) DC microgrid system, mismatches among the PV modules due to partial shading will cause power loss. The distributed maximum power point tracking (DMPPT) can effectively solve the mismatch problem and achieve high-efficiency power output. This study proposes a maximum power range estimation method based on the DMPPT technique, which can provide guidance for designing parameters. Moreover, in order to realise seamless switching between different operation modes and ensure the stability of the DC microgrid, this study proposes a modified energy management and control strategy based on the hierarchical method. Simulation and experiment results indicate that the proposed control strategy for the DC microgrid based on the DMPPT technique can switch flexibly among different operation modes of the system, with a variation of environmental conditions and battery states, ensuring the stable bus voltage as well as safe operation.

中文翻译：

---

基于DMPPT架构的直流微网能源管理策略。

在常规的光伏（PV）DC微电网系统中，由于部分阴影而导致的PV模块之间的不匹配将导致功率损耗。分布式最大功率点跟踪（DMPPT）可以有效解决不匹配问题，实现高效功率输出。本研究提出了一种基于DMPPT技术的最大功率范围估计方法，可以为设计参数提供指导。此外，为了实现不同运行模式之间的无缝切换并确保直流微电网的稳定性，本研究提出了一种基于分层方法的改进的能量管理和控制策略。仿真和实验结果表明，基于DMPPT技术的直流微电网控制策略可以在系统的不同运行模式之间灵活切换，