This article presents an autonomous model predictive controlled smart photovoltaic (PV) inverter with proactive grid fault-ride through capability. The proposed smart inverter control features decoupled active and reactive power. It can seamlessly switch between the anticipated modes of operation based on grid condition or grid operator command. The smart inverter autonomously adjusts its active and reactive power set-points according to the grid condition, it operates in maximum power point tracking (MPPT) and low voltage ride through (LVRT) modes in normal grid and faulty grid condition modes, respectively. The proposed novel autonomous model predictive control (AMPC) scheme is leveraged to enhance the operation of the smart inverter. The AMPC includes online weight factor auto-tuning and control objective normalization to eliminate the required trial-and-error weight factor design stage in conventional model predictive control. This feature is particularly beneficial to the dual-mode smart inverter operation. The performance of the proposed grid-tied smart inverter based on the AMPC is verified experimentally. The results demonstrate that the proposed AMPC-based smart inverter features robust grid fault detection, autonomous adjustment of active and reactive power set-points, seamless transition between modes of operation, and elimination of controller tuning effort.

中文翻译：

---

具有主动电网故障穿越能力的自主模型预测控制智能逆变器

本文介绍了一种具有主动电网故障穿越能力的自主模型预测控制智能光伏 (PV) 逆变器。所提出的智能逆变器控制具有去耦有功和无功功率的特点。它可以根据电网状况或电网运营商的命令在预期的运行模式之间无缝切换。智能逆变器根据电网状况自动调整其有功和无功功率设定点，它分别在正常电网和故障电网状况模式下以最大功率点跟踪 (MPPT) 和低电压穿越 (LVRT) 模式运行。所提出的新型自主模型预测控制 (AMPC) 方案用于增强智能逆变器的运行。AMPC 包括在线权重因子自动调整和控制目标归一化，以消除传统模型预测控制中所需的反复试验权重因子设计阶段。此功能特别有利于双模智能逆变器运行。实验验证了所提出的基于 AMPC 的并网智能逆变器的性能。结果表明，所提出的基于 AMPC 的智能逆变器具有强大的电网故障检测、有功和无功功率设定点的自主调整、运行模式之间的无缝转换以及消除控制器调整工作的特点。实验验证了所提出的基于 AMPC 的并网智能逆变器的性能。结果表明，所提出的基于 AMPC 的智能逆变器具有强大的电网故障检测、有功和无功功率设定点的自主调整、运行模式之间的无缝转换以及消除控制器调整工作的特点。实验验证了所提出的基于 AMPC 的并网智能逆变器的性能。结果表明，所提出的基于 AMPC 的智能逆变器具有强大的电网故障检测、有功和无功功率设定点的自主调整、运行模式之间的无缝转换以及消除控制器调整工作的特点。