Sensorless Control of Packed-U-Cells in Distorted Grid

Abstract

With the trend of distorted changes in the power grid, controlling the converter to achieve high-performance access to the grid under distorted power grids has become a problem worthy of attention. This paper uses Packed-U-Cells as the research topology. In the absence of a grid voltage sensor, the harmonic detection link is used to reconstruct the accurate grid voltage signal, and the FCS MPC method is combined to realize the tracking of the reference grid current. The simulation based on MATLAB/Simulink and the experimental results based on Hardware-In-the-Loop all prove the reliability of the proposed control system.