Abstract：According to the dynamic mathematical model of three-phase grid-connected inverters, the influence on the active power change and the reactive power change is derived and analyzed in detail for grid-connected inverters when the voltage vectors are impressed. The best voltage vector is selected according to the signs of the active power change and the reactive power change, which can make the ripple of the active power and the reactive power small. On this basis, a direct power control (DPC)based on a new switching table is proposed. A novel direct power predictive control is adopted at same time, which is combined with space vector pulse modulation (SVPWM). This control strategy achieves the decoupling control for the active power and reactive power and an adjustable power factor. At last, comparative experiments are tested for direct power control and direct power predictive control (DPPC). The feasibility and correctness of the control strategy are verified by experimental results.
赵方平, 杨勇, 阮毅, 赵春江. 三相并网逆变器直接功率控制和直接功率预测控制的对比[J]. 电工技术学报, 2012, 27(7): 212-220.
Zhao Fangping, Yang Yong, Ruan Yi, Zhao Chunjiang. Comparative Study for Direct Power Control and Direct Power Predictive Control in Three-Phase Grid-Connected Inverters. Transactions of China Electrotechnical Society, 2012, 27(7): 212-220.
2012, Vol. 27 
