Work

Impedance Reshaping Band Coupling and Broadband Passivity Enhancement for DFIG System

Year: 2023

Type: article

Abstract: Doubly fed induction generator (DFIG) based wind power systems incur a broadband negative resistive characteristic, resulting in resonance risks when connected with weak grid or diverse grid transmission infrastructure. The dominant factor and underlying mechanism of this broadband negative resistive characteristic are analyzed based on the passivity-based stability assessment. It is then noticed that the negative resistive region within low frequency, middle frequency, and high frequency are closely linked to the current controller, phase locked loop, and system delay, respectively. This article reveals the impedance reshaping band coupling phenomenon to facilitate some passivity-based designs, then puts forward a broadband passivity enhancement method for DFIG system. The experimental results validate the aforementioned conclusions and the effectiveness of the proposed passivity enhancement method.

Source: IEEE Transactions on Power Electronics

DOI: 10.1109/tpel.2023.3270364

Authors: Bin Hu, Heng Nian, Haipan Li, Liang Chen, Subham Sahoo, Frede Blaabjerg

Institutions: Zhejiang University, NingboTech University, Aalborg University

Language: English

Topic: Wind Turbine Control Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: green

Funder: National Natural Science Foundation of China