| Title |
A SRF Power Flow Control Method for Grid-Connected Single-Phase Inverter Systems |
| Authors |
Han-Eol Park ; Eun-Seok Kim ; Joong-Ho Song |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2010.24.5.129 |
| Keywords |
Power Flow Control ; Single-Phase Inverter ; Distributed Generation ; SRF |
| Abstract |
It is well known that distributed generation(DG) system using renewable energy is an alternative to solve the problems which result from the exhaustion of fossil fuel and the environmental pollution. A PWM inverter is required for a power flow control in the DG systems. This paper proposes a SRF power flow control method considering grid impedance in grid-connected single-phase inverter systems. The proposed SRF power flow control method can provide a voltage-reference for the single-phase inverter even without any grid impedance estimation so that the single-phase inverter system could operate in stand-alone mode and grid-connected mode based on the known nominal value of grid impedance. Also independent controls of active and reactive power are achieved by the proposed control method. The effectiveness and the validity of the proposed control method are demonstrated through simulations. The simulation results show that the proposed control method can control properly power flow in grid-connected single-phase inverter systems. |