- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2019 8th International Conference on Renewable Energy Research and Applications (ICRERA) - Brasov, Romania (2019.11.3-2019.11.6)] 2019 8th International Conference on Renewable Energy Research and Applications (ICRERA) - An Optimized Decentralized Control Strategy of Grid-Connected Residential Photovoltaic Inverters Based on Voltage Sensitivity Matrix
摘要： Due to the mismatch between the residential electrical load and the output power of the rooftop photovoltaic (PV) systems, node voltages in a low voltage distribution network (LVDN) may exceed the allowable upper limit during the daytime and drop far below the lower limit at night. Existing LVDN voltage regulation methods based on reactive power control of the rooftop PV inverter usually regulate all the inverters using the same control strategy with identical control parameters, although PV inverters at different nodes have different voltage sensitivities to active and reactive power flows. In this paper, an optimized decentralized control strategy of residential PV inverters based on voltage sensitivity matrix is proposed, and different control parameters would be determined and applied to each PV inverters at different LVDN nodes. The proposed strategy provides an optimal control framework for the rooftop PV inverters to maintain voltage within the normal range under varying active power generated by the PV systems, and simulation results verify that the total reactive power output of the PV inverters can be effectively reduced.
关键词： distribution network,residential photovoltaic system,grid-connected inverters,voltage Sensitivity,Decentralized control
更新于2025-09-19 17:13:59
-
A New Approach to H-Infinity Control for Grid-Connected Inverters in Photovoltaic Generation Systems
摘要： The present study investigates the stability problem of the grid-connected inverters (GCIs) for possible variations in grid impedance. A new type of H1 control method is proposed for the current control loop of inverters, where the third weighting function is determined using the game theory. The proposed method is applied to the GCI in a photovoltaic system and its response to variations in grid impedance is investigated. Computer simulations conducted for comparison of H1 and PI controller indicate the effectiveness of the proposed control algorithm. Simulation results also show that the proposed algorithm significantly outperforms the PI controller under the conditions of varying grid impedance.
关键词： solar energy,photovoltaic power generation,robust control,power electronics,grid-connected inverters,weighting function,game theory,H-in?nity control
更新于2025-09-11 14:15:04