Design of a back-to-back NPC converter interface for wind turbines with squirrel-cage induction generator

被引:78
作者
Bueno, Emilio J. [1 ]
Cobreces, Santiago [1 ]
Rodriguez, Francisco J. [1 ]
Hernandez, Alvaro [1 ]
Espinosa, Felipe [1 ]
机构
[1] Univ Alcala de Henares, Dept Elect, Madrid 28871, Spain
关键词
back-to-back neutral point clamped (NPC) converter; dc-bus capacitors; DSP and field-programmable gate array (FPGA); local control level (LCL) filter; voltage dip;
D O I
10.1109/TEC.2008.918651
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
As the number of wind power applications with power electronic interfaces in the grid increases, it is becoming unacceptable to disconnect the generating units every time disturbances occur, especially under voltage dips, as was a common practice in the past. Keeping the converter online during unbalanced voltage, and guaranteeing the actual standards of the converter connected to the grid, is becoming a very critical issue. From these goals, the design of a robust back-to-back neutral point clamped (three levels) voltage source converter of 150 kVA is developed in this paper. The converter is divided into two main parts: the power electronic system and the control electronic system. Concerning the first part, on the one hand, the paper presents the designs of active and passive components as insulated gate bipolar transistor, free-wheeling diodes, clamping diodes, grid filter, dc-bus capacitors, etc.; and on the other hand, the converter requirements are analyzed to ride through real grid conditions, i.e., unbalanced voltage dips. Concerning the control electronic system, the chosen electronic structure and the task distribution between the two processors used are shown. © 2008 IEEE.
引用
收藏
页码:932 / 945
页数:14
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