•  
  •  
 

Keywords

wind power generation;droop control;voltage compensation;current compensation;multiple quasi proportional resonances control

Abstract

To achieve safe and stable grid connection of the direct-driven permanent magnet wind power generation system, a grid-connection control strategy combining dual compensation droop with multiple quasi-proportional-resonances (MQPR) is proposed. This strategy originates from traditional droop control, introduces DC voltage compensation in the voltage control loop to quickly adjust and stabilize the DC bus voltage, and introduces capacitive current compensation in the current control loop to effectively reduce the impact of current errors caused by filter capacitors. Meanwhile, a MQPR controller is designed to replace the PI controller of the inner-loop current, which can filter out multiple harmonic currents in the system. By establishing a simulation model and comparing it with the double closed-loop PI and traditional droop control strategies, the effectiveness of the proposed control strategy is verified.

DOI

10.19781/j.issn.1673-9140.2024.03.016

First Page

142

Last Page

149

Share

COinS