Dissertation > Excellent graduate degree dissertation topics show

Parametric Fault Diagnosis of Power Electronic Circuit Based on Hybrid System Theory

Author: WangLinGuo
Tutor: MaZuo；ZhangNi
School: Zhejiang University
Course: Power Electronics and Power Drives
Keywords: power electronic circuit hybrid system parametric fault diagnosis aluminum electrolytic capacitor Equivalent series resistance (ESR)
CLC: TM13
Type: Master's thesis
Year: 2006
Downloads: 341
Quote: 5
Read: Download Dissertation

Abstract


With rapid development of power electronic technology, power electronic devices have been applied widely in industry area. Playing roles as controllers or power supplies, the stability of power electronic devices make the assurance of continuous production. Severe fault of power electronic devices can even paralyze the whole system. Therefore, in order to improve reliability and maintainability of power electronic system, researches on fault diagnosis of power electronic circuits is essential.This paper presents an approach to parametric fault diagnosis of power electronic circuits. Based on the structure and working method of power electronic devices, the equivalent model for actual circuit application and degradation mechanism is analyzed. Diagnosis targets include electrolytic capacitor, power MOSFET, power diode and other power electronic components. The parameters of these components can be identified by using least square algorithm via a general modeling method of power electronic circuits based on the theory of hybrid dynamical systems. A multi-channel and high speed data acquisition system is designed for the parameter identification of power electronic circuits. This approach is verified by diagnosis of aluminum electrolytic capacitor in a three-phase rectifying circuit.Besides, with the purpose of improving the reliability of the system, a method to realize the pre-diagnosis is discussed based on the analysis of the trend of ESR with time.

Related Dissertations

  1. Screening of Proteins Interacting with Streptococcus Equi Ssp. Zooepidemicus M-Like Protein in Swine Vascular Endothelial Cells,S852.611
  2. Cloning and Preliminary Functional Analysis of GmCASc Gene in Soybean (Glycine Max(L.) Merrill),S565.1
  3. Piecewise nonlinear modeling and control of hybrid systems,TP13
  4. Study and Implement of Hybrid System Supporting Transparent SW and HW Programming,TN791
  5. Research on Available Transfer Capability for AC/DC Hybrid System Considering Uncertainties,TM721.3
  6. Preparation and study of an aluminum electrolytic capacitor working electrolyte additives,TM535
  7. Synthesis and Application of aluminum electrolytic capacitor with a new type of electrolyte,TM535
  8. Application Research on Fault Diagnosis of Power Electronic Circuits Based on BP Neutral Network Optimized by QGA,TN710
  9. Preparation of Branch-chain Polycarboxylic Acid Ammonium and Its Application in Aluminum Electrolytic Capacitor,TM535
  10. Synthesis and Application of boric acid propylene glycol polyester,TQ268
  11. Research on Reliability of Aluminum Electrolytic Capacitor in Smps,TN86
  12. Study on Binding Site of HBV X Protein Interacting with Cytochrome C Oxidase Ⅲ,R512.62
  13. Preparation and research of high dielectric constant composite dielectric film,TB43
  14. 1.Construction and Identification of Two Spider Peptide Toxin Bait Vectors 2.Construction Chimera of Voltage-gated Sodium Channel and Detection Biological Activity,Q78
  15. Study on Modeling and Control for Power Electronic Circuits Based on Hybrid System Theory,TM1
  16. The Functional Analysis of DREBs Transcription Factors in Plant Stress Tolerance--Isolation of DREBs Transcription Factors and the Functional Analysis of Its Stress Tolerance in Peanut (Arachis Hypogaea L.),Q943
  17. Actinomycetes fermentation broth of high-throughput screening of telomerase inhibitors,R96
  18. Screening and Identifying the Proteins Interacting with PBP2a in the Methicillin-resistant Staphylococcus Aureus,Q93
  19. Super capacitor hybrid vehicle charging system development,TM910.6
  20. Mapping of the Proteins Interacting Domains of Chicken Anemia Virus,S858.31

CLC: > Industrial Technology > Electrotechnical > Fundamental Theory of Electrical Engineering > Circuit Theory
© 2012 www.DissertationTopic.Net  Mobile