守恒功率理论下容量受限多功能逆变器多目标补偿方法OA

The existing conservative power theory(CPT)-based studies on multifunctional grid-tied inverters do not ac-count for the compensation capacity constraints,and it is difficult to strike a balance between dynamic response speed and steady-state accuracy.Aimed at these limitations,a multi-objective compensation method for capacity-limited sce-narios is proposed in this paper.To solve the capacity-allocation problem,a current residual ratio index is introduced within the CPT framework to quantify the compensation effect of different current components,and a two-stage compen-sation strategy is designed accordingly,i.e.,the predefined performance requirements are satisfied at first,and the re-maining capacity is then dynamically allocated.To improve the control performance,a composite control structure is employed by paralleling quasi-proportional resonant(QPR)control with improved repetitive control,where QPR con-trol enhances the dynamic response speed and the improved repetitive control ensures the steady-state accuracy.Simula-tion results demonstrate that the proposed method provides effective multi-objective coordination capability and engi-neering applicability under different compensation capacities.