摘要
矩阵变换器是一种新型的交交变换器,相对于传统的交直交变频器,它具有输入功率因数可控,无需直流储能元件,结构紧凑,体积小等优点。本文将矩阵变换器用于双馈型风力发电机励磁系统,提出了双馈电机并网和发电运行时矩阵变换器交流励磁系统的控制策略,该策略是将矩阵变换器的间接空间矢量控制,与基于定子电压定向矢量控制策略相结合,从而实现双馈电机的并网及功率传输。实验结果表明,该策略不仅实现了双馈电机并网,而且可以输出有功功率和无功功率,从而验证该控制策略的可行性,因此具有实际应用价值。
Compared with traditional AC-DC-AC converter, matrix converter （MC） is a new type of AC-AC con- verters. MC has the advantages of controllable input power factor without the need for DC energy storage devices, compact structure, small size, and so on. In this paper, the MC is used for exciting system of double-fed induction generator （DFIG）. The control theory of matrix-converter-exciting system is proposed to achieve the purpose of grid connection and power generation. The proposed method, which combines vector control of stator-voltage-oriented and indirect space vector control of MC, can achieve the purpose of grid connection and decoupled control of pow- er. The experimental results are reported to show that the control method not only achieved grid-connection, but al- so transmitted active power and reactive power. The feasibility of the proposed method is verified. Therefore it has the value of practical applications.
出处
《电工电能新技术》
CSCD
北大核心
2011年第4期56-59,69,共5页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金资助项目(50977080)
关键词
矩阵变换器
双馈电机
交流励磁
空间矢量脉宽调制
matrix converter
doubly-fed induction generator （DIFG）
AC-excitation
space vector pulse widemodulate （SVPWM）
