LVRT Scheme of PMSG Wind Power Systems Based on Feedback Linearization

Author

Kim, Ki-Hong ; Jeung, Yoon-Cheul ; Lee, Dong-Choon ; Kim, Heung-Geun

Author_Institution

LG Electron. Inc., Changwon, South Korea

Volume

27

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

2376

Lastpage

2384

Abstract

This paper proposes a low-voltage ride-through scheme for the permanent magnet synchronous generator (PMSG) wind power system at the grid voltage sag. The dc-link voltage is controlled by the generator-side converter instead of the grid-side converter (GSC). Considering the nonlinear relationship between the generator speed ω_m and the dc-link voltage V_dc , a dc-link voltage controller is designed using a feedback linearization theory. The GSC controls the grid active power for a maximum power point tracking. The validity of this control algorithm has been verified by simulation and experimental results for a reduced-scale PMSG wind turbine simulator.

Keywords

control system analysis; feedback; linearisation techniques; machine control; permanent magnet generators; power convertors; power supply quality; synchronous generators; voltage control; wind power plants; DC link voltage; LVRT scheme; PMSG wind power systems; feedback linearization theory; generator side converter; generator speed; grid voltage sag; low voltage ride through scheme; permanent magnet synchronous generator wind power system; Automatic voltage control; Circuit faults; Generators; Power system stability; Wind power generation; Wind turbines; DC-link voltage; feedback linearization; permanent magnet synchronous generator (PMSG); ride-through; wind power;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2011.2171999

Filename

6045345