In engineering applications,the use of energy storage to support grid-forming photovoltaic (GFM PV) units faces challenges such as high construction costs and difficulties in land negotiations. However,without energy storage,grid-forming control struggles to find the operating point of maximum power point tracking (MPPT) during weather changes. To address this,a grid-forming control strategy that considers reserved power and integrates virtual synchronous control (VSC) is proposed. Additionally,a controller is designed to prevent DC bus voltage collapse,stabilizing the DC bus voltage. A control model for GFM PV units without energy storage,considering reserved power,is developed in Simulink,and simulations are conducted on the RT-LAB platform in conjunction with physi-cal power electronics to obtain the simulation waveform. The simulation results demonstrate that the proposed strat-egy can find the operating point of MPPT in various scenarios,ensuring stable outputs of active and reactive power,thereby verifying the effectiveness of the control strategy.
PVgrid-formingimproved constant voltage methodmaximum power point trackingenergy storage
维普
万方数据
