抄録
The inverters which simulate the actual synchronous generators can continue to operate in grid disconnection. It is called virtual synchronous generator (VSG). In this paper, the VSG without phase locked loop (PLL) based on a current controlled inverter is proposed. The proposed controller is composed of impedance model, governor, AVR, damper model and rotor model. It can be synchronized with grid without PLL because it has synchronizing power. VSG parameter design method is provided by stability analysis. Finally, simulation and experimental results show that the proposed VSG can operate in disconnection from the grid. It can supply load after disconnection from grid.
