A technique based on system identification of feature parameter extraction for the buck converters

作者：Shen Qian; Ren Lei; Gong Chunying; Yuan Shenfang

来源：Proceedings of the CSEE, 2016, 36(20): 5624-5631.

DOI：10.13334/j.0258-8013.pcsee.152250

• Buck converters
• Convergence speed
• Hybrid system models
• Identification precision
• Linear modeling
• Non ideals
• Prognostics and health managements
• Target component

The prognostics and health management (PHM) have very important significance for ensuring the security of systems. The widely use of power electronic equipment is now making the PHM technology for power electronics become more important. The feature parameter extraction plays a key role in realizing PHM of power electronic circuits and current research work concerning is described in brief. The accuracy of conventional parameter identification of power electronic circuits based on hybrid system models suffers from too many non-ideal factors in practice. In this regard, a more widely used parameter extracting method for the Buck converters is proposed by establishing a linear model containing target components of the circuit. In addition, the performance including convergence speed and identification precision of the proposed method is analyzed with the assist of Matlab. At last, experiment results show that the parameter identification accuracy is over 95%, by which the effectiveness of the method is verified.

• 出版日期2016
• 单位南京大学