Dynamic Characteristics Analysis of DFIG Based on IMC

Author

Ren Yong-feng ; Li Han-shan ; Zhou Jie ; An Zhong-quan ; Liu Jin-guo ; Hu Hong-bin

Author_Institution

Coll. of Inf. Eng., Inner Mongolia Univ. of Technol., Hohhot

fYear

2009

fDate

27-31 March 2009

Firstpage

1

Lastpage

5

Abstract

A detailed mathematical model of doubly-fed induction generator (DFIG) is derived according to generator convention. A novel S-Function is proposed to describe the mathematical model of DFIG. The simulation subsystems of no-load operation and generator operation are developed based on state equations. The control of the rotor current inner loop and the rotating speed outer loop are designed based on internal model control (IMC) strategies, respectively. A full variable- speed constant-frequency (VSCF) DFIG wind power generation system model is developed based on MATLAB. The dynamic response of an 850 KW for grid connection system under rotating speed variation and large three-phase disturbance conditions is studied. The results reveal that the proposed simulation model is effective in regulating rotational speed and dynamic response under various run conditions.

Keywords

asynchronous generators; electric current control; fault diagnosis; power grids; velocity control; wind power plants; MATLAB; S-function; doubly-fed induction generator; dynamic characteristics analysis; grid connection system; internal model control strategies; power 850 kW; rotating speed outer loop control; rotor current inner loop control; state equations; variable-speed constant-frequency; wind power generation system; Educational institutions; Equations; Induction generators; Mathematical model; Power system modeling; Power system simulation; Rotors; Stators; Wind energy generation; Wind power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Conference_Location

Wuhan

Print_ISBN

978-1-4244-2486-3

Electronic_ISBN

978-1-4244-2487-0

Type

conf

DOI

10.1109/APPEEC.2009.4918297

Filename

4918297