Period-doubling bifurcation and its boundary study of DFIGWind turbine connected with local interacting unbalanced loads in micro-grid

Author

Zhen Li ; Xiangdong Liu ; Siu-Chung Wong ; Yuehui Huang ; Xi Chen

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

fYear

2014

fDate

1-5 June 2014

Firstpage

486

Lastpage

489

Abstract

DFIG wind turbine systems are attractive renewable resources in distributed generation units and micro-grids. Due to the direct-connection of its stator windings to the single point of common coupling, DFIG is vulnerable to the unequally-distributed loads at low voltage and arises various hazardous complex dynamic behavior in reliability and harmonics. This paper studies the dynamic behavior of this system and reveals the period-doubling bifurcation phenomena. Under certain loading conditions when the system is undergoing negative sequences from unbalanced loads, the period-doubling and its stability boundaries has been observed and investigated with full-circuit MatLab simulations, illustrating the potential instability problems from loads and control parameters.

Keywords

asynchronous generators; bifurcation; distributed power generation; power generation reliability; power system harmonics; power system stability; stators; wind turbines; DFIG wind turbine systems; common coupling; distributed generation units; doubly fed induction generator; full-circuit MatLab simulations; hazardous complex dynamic behavior; instability problems; local interacting unbalanced loads; microgrids; period-doubling bifurcation phenomena; renewable resources; stability boundaries; stator windings; Bifurcation; Inductance; Power system stability; Rotors; Stability analysis; Voltage control; Wind turbines; Doubly fed induction generator (DFIG); microgrid; period-doubling bifurcation; stability boundaries;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

Conference_Location

Melbourne VIC

Print_ISBN

978-1-4799-3431-7

Type

conf

DOI

10.1109/ISCAS.2014.6865178

Filename

6865178