Research Progress on Power Decoupling Control for Grid-Connected Inverters

With the continuous expansion of global energy demand and increasing integration of renewable energy into power grids, maintaining grid stability has become significantly more challenging.As the essential interface connecting renewable energy sources to the grid, grid-connected inverters critically depend on advanced power decoupling technology to effectively mitigate intermittent power fluctuations inherent in renewable generation and ensure reliable system operation.This paper conducts a systematic investigation into recent progress in power decoupling control methodologies for grid-connected inverters.The study classifies existing decoupling approaches according to their underlying control architectures, followed by a rigorous comparative evaluation of their respective advantages and technical limitations.Through this analytical process, several critical shortcomings in contemporary power decoupling solutions are identified.In response to these limitations, the research proposes a series of targeted technical enhancements and innovative improvement strategies.The study establishes theoretical foundations while providing actionable technological references for future developments in decoupling technology.By resolving existing limitations in stability, efficiency, and implementation complexity, this work contributes substantively to next-generation grid-interactive power conversion systems.