Crowbar circuit in wind power grid low voltage ride through

Author

Aoran Xu ; Liu Zhang ; Cailian Gu ; Yi Zhang

Author_Institution

Shenyang Inst. of Eng., Shenyang, China

fYear

2014

fDate

23-26 Sept. 2014

Firstpage

399

Lastpage

402

Abstract

The principle of DFIG wind power generation system is analyzed and the mathematic model is developed. The function of the active Crowbar in LVRT is studied and the parameters of the active Crowbar are given. The simulation result shows that the DFIG system with active crowbar can protect converter against overvoltage and over current. Finally, main power circuit and driving circuit of the active Crowbar is designed. A VSG (Voltage Sag Generation) based on resistor is built. The corresponding experiment is done on the 90kWDFIG experimental platform. The LVRT scheme based on the active Crowbar is studied through experimentation. The experiment result shows that Crowbar is necessary for improving LVRT capability of DFIG wind power generation system and LVRT scheme based on the active Crowbar is effective.

Keywords

power supply quality; wind power; Crowbar circuit; DFIG wind power generation system; LVRT scheme; VSG; power 90 kW; voltage sag generation; wind power grid low voltage; Abstracts; DC motors; Integrated circuit modeling; Power grids; Rotors; Stators; Wind power generation; DFIG; LVRT; active Crowbar;

fLanguage

English

Publisher

ieee

Conference_Titel

Electricity Distribution (CICED), 2014 China International Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CICED.2014.6991737

Filename

6991737