Modified Instantaneous Power Control With Phase Compensation and Current-Limited Function Under Unbalanced Grid Faults

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 inverter-based there may be a tradeoff between oscillations and current harmonics fault ride-through control, which has crucial impact on installed inverters different applications. this article, modified instantaneous control-based phase compensation control 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 based dSPACE-DS1007 MATLAB/Simulink are carried out verify effectiveness strategy.