Study of Multi-level Rectifier in High Power System Based on a Novel Virtual Flux Observer

被引:0
|
作者
Han, Yaofei [1 ]
Tan, Guojun [1 ]
Li, Hao [1 ]
Wu, Xuanqin [1 ]
机构
[1] China Univ Min & Technol, Xuzhou 221008, Jiangsu, Peoples R China
来源
2009 INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS, VOLS 1 AND 2 | 2009年
关键词
Multi-level; PWM rectifier; virtual flux observer; voltage estimator;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In the control of PWM rectifier, it can restrain harmonic and interference effectively by constructing a virtual line-flux-linkage to serve as the oriented vector. However, there are some problems in the conventional method, such as the error of amplitude, the shift of phase angle and the nondeterminacy of initial oriented angle. In the thesis, two one-stage low-pass filters are adopted instead of the pure integrator in the virtual line-flux-linkage observer, which can steady the phase and amplitude. Furthermore, a novel method of voltage estimate at the three-level rectifier terminals is advanced based on the simplified SVPWM algorithm. The good dynamic and static performance under the proposed control strategy is verified by simulation and experiment.
引用
收藏
页码:288 / 291
页数:4
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