Recurrent Neural Networks Based Impedance Measurement Technique for Power Electronic Systems

被引:35
作者
Xiao, Peng [1 ]
Venayagamoorthy, Ganesh Kumar [3 ]
Corzine, Keith A. [3 ]
Huang, Jing [2 ]
机构
[1] Thermadyne Ind, W Lebanon, NH 03784 USA
[2] Satcon Technol Corp, Boston, MA 02210 USA
[3] Missouri Univ Sci & Technol, Real Time Power & Intelligent Syst Lab, Rolla, MO 65409 USA
基金
美国国家科学基金会;
关键词
Impedance measurement; recurrent neural network (RNN); stability analysis; PARTICLE SWARM OPTIMIZATION; STABILITY;
D O I
10.1109/TPEL.2009.2027602
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
When designing and building power systems that contain power electronic switching sources and loads, system integrators must consider the frequency-dependent impedance characteristics at an interface to ensure system stability. Stability criteria have been developed in terms of source and load impedance, and it is often necessary to measure system impedance through experiments. Traditional injection-based impedance measurement techniques require multiple online testing that lead to many disadvantages, including prolonged test time, operating point variations, and impedance values at limited frequency points. The impedance identification method proposed in this paper greatly reduces online testing time by modeling the system with recurrent neural networks with adequate accuracy. The recurrent networks are trained with measured signals from the system with only one stimulus injection per frequency decade. The measurement and identification processes are developed, and the effectiveness of this new technique is demonstrated by simulation and laboratory tests.
引用
收藏
页码:382 / 390
页数:9
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