QIU LIN, XIA WEI, KANG JINSONG. Study on the Control Strategy of Grid-connected Inverter Based on Complex Control. [J]. Power capacitor & reactive power compensation, 2017, 38(6): 158-163.
QIU LIN, XIA WEI, KANG JINSONG. Study on the Control Strategy of Grid-connected Inverter Based on Complex Control. [J]. Power capacitor & reactive power compensation, 2017, 38(6): 158-163. DOI: 10.14044/j.1674-1757.pcrpc.2017.06.030.
Considering the limitations of the traditional control strategy for three-phase grid-connected inverter
a novel compound control strategy that combines the PI+ and modified repetitive control strategy together is proposed in this paper.First
the feasibility of this method is discussed and proven to be feasible.Then
detailed analysis and derivation are made in the field of system stability and the design method of compensator and the design method for simplifying the compensator with uniform structure
namely
equivalent control object method
is proposed.The advantage and disadvantage and application of the PI+ modified repetitive control strategy with serial and parallel structure is compared and analyzed.Finally
an experiment with a 20 kVA grid-connected inverter prototype at the distorted grid voltage is conducted and both the theoretical analysis and the design scheme of the proposed compensator are verified.
关键词
PI+改进型重复控制并网逆变器等效控制对象方法复合控制器
Keywords
PI + modified repetitive controlgrid-connected inverterequivalent control objectcomplex control