Abstract Today, grid-connected photovoltaic systems have gained widespread penetration among renewable energy systems. For low power applications, a single-phase inverter with less power converter is a good compromise for high efficiency. The control must make it possible to extract the maximum power from the photovoltaic modules, ensure good dynamic performance for active and reactive power injection, ensure power quality, and reject disturbances and parameter mismatch. Besides, the controllers of the grid and PV sides should be coordinated. In this study, a fast terminal sliding mode control combined with Direct Power Control is proposed. Thanks to the two-cascaded control loops, simulations and experimental results with a 1 kW test bench have proven the proposal’s effectiveness in terms of dynamic performances and robustness to irradiance variations. Comparison with deadbeat-Direct Power Control, predictive control, and power hysteresis control shows that our proposal leads to lower Total Harmonic Distortion (3,5%) for the electrical grid’s current and lower time response (one-tenth of half the grid cycle).

中文翻译：

---

基于快速终端滑模控制的单级单相光伏系统直接功率控制

摘要 如今，并网光伏系统在可再生能源系统中得到了广泛的渗透。对于低功率应用，具有较少功率转换器的单相逆变器是高效率的良好折衷。控制必须能够从光伏模块中提取最大功率，确保有功和无功功率注入的良好动态性能，确保电能质量，并抑制干扰和参数不匹配。此外，电网侧和光伏侧的控制器应协调一致。在这项研究中，提出了一种结合直接功率控制的快速终端滑模控制。多亏了两个级联控制回路，使用 1 kW 测试台的模拟和实验结果证明了该提案在动态性能和对辐照度变化的鲁棒性方面的有效性。与无差拍直接功率控制、预测控制和功率滞后控制的比较表明，我们的建议导致电网电流的总谐波失真 (3.5%) 和时间响应更低（电网周期的十分之一） .