Modified Instantaneous Power Control with Phase Compensation and Current-limited Function under Unbalanced Grid Faults

摘要: In distributed generation systems, power quality is one of the main concerns during short-term unbalanced grid voltage faults. However, for most common three-phase three-wire grid-connected inverters based there may be a trade-off between oscillations and current harmonics fault ride through control, which has crucial impact on installed different applications. this paper, modified instantaneous control phase compensation strategy proposed to enhance inverter quality, while at same time mitigating active/reactive oscillations. Moreover, simplified peak current-limited developed improve reliability system, it does not need extraction and/or fundamental positive/negative sequence components, significantly reduce computation burden. Finally, experimental tests dSPACE-DS1007 MATLAB/Simulink are carried out verify effectiveness strategy.