Unified Modeling and Practical Assessment of Proportional Grid-Voltage Feedforward in Multiple Reference Frames for LCL-Filtered Power Conversion Systems
Power conversion systems (PCSs) connect dc energy sources to the grid, but background grid-voltage disturbances can degrade grid-current quality. This paper presents a unified derivation and implementation-oriented assessment of proportional grid-voltage feedforward in the abc, αβ, and dq reference frames for an LCL-fi...