Dissertation > Excellent graduate degree dissertation topics show

Design on Power Supply System of Permanent Magnetic Actuator for Vacuum Circuit Breaker

Author: MaYan
Tutor: LiaoMinFu
School: Dalian University of Technology
Course: Motor and electrical
Keywords: Permanent Magnetic Actuator Fly-back converter Switch Power Supply Power induction coil
CLC: TM561.2
Type: Master's thesis
Year: 2009
Downloads: 157
Quote: 2
Read: Download Dissertation

Abstract


With the development of power system in China,the demand of electrical production is becoming more rigorous.As an important part of power system,vacuum circuit breaker is no exception.Nowadays,the vacuum circuit-breaker is turning toward to the high voltage,the miniaturized direction develops,in view of this tendency,domestic and foreign electric power profession design new type of vacuum circuit-breaker.At the same time,the development of new vacuum circuit-breaker requests the adequate reliability,the low power consumption,the miniaturized of the electricity source.As the power system for vacuum circuit breaker, permanent magnetic actuator,which is principally accomplishes the function of opening, closing operation,is mainly used in design of new type vacuum circuit-breaker.In the system, power supply uses the switching power supply for the electrolytic capacitor charging. Electrolytic capacitor transfers the stored energy to the coil of the system.And the design and the reliability of power supply in permanent magnetism system is core technology which can spread into practical application.Firstly,this paper describes the working principle and the control mode of the forward, fly-back,half-bridge and full-bridge DC-DC converter.According to actual situation,fly-back converter has been chosen as a changing power.Through the formula of fly-back converters deducted for dynamic state process with large capacitive loads,it fully explains the superiority of the current power supply.Furthermore,theoretical basis is given for the design of capacitor charge power.According to the method of getting the power on line for the system,power induction coil is used.The work principle of power induction coil is analyzed and according to such a special condition,the empirical formula has been improvement.Based on the theoretical,a new method of design is proposed in this paper.In hardware part,the arrangement of power system,changing power circuit is designed based on design requirement. The major parameters of changing power and induction coil are shown in the paper.Through theoretical analysis,the prototype power system is installed and adjusted.The working state of power induction coil and system protection circuit are checked;key waveforms of charging power supply,change of voltage on the capacitor and ripple of voltage are shown.We can draw a conclusion by experimentation that fly-back converter is suit for charging capacitors with very low input voltage.The validity and reliability of permanent magnetic power system are proved.

Related Dissertations

  1. Research on the Topologies of Polarity-Variable Micro Oxidation Pulse Power,TN86
  2. 12kV vacuum circuit breaker Improvement of permanent magnetic actuator,TM561.2
  3. Vacuum circuit breaker module power system electromagnetic compatibility and reliability design,TM561.2
  4. Research on Far-Field Emi Emission of a Flyback Power Supply Using FDTD Method,TN011
  5. Research and Design of Battery Charging System,TM912
  6. Research and Realization on New Type Intelligent Controller of Permanent Magnetic Actuator Vacuum Circuit Breaker,TM561.2
  7. Research on On-line Monitoring Technique for Key Parameters of Vacuum Circuit Breaker with Permanent Magnetic Actuator,TM561.2
  8. The Research and Design of High-frequency Flyback Single Phase Inverter for AC PV Module System,TM464
  9. Research on Synchronous Control System of VS1-12/M Vacuum Circuit Breaker with Permanent Magnetic Actuator Based on DSP,TM561.2
  10. Research on High Voltage Switch Controller of Mine Based on Permanent Magnetic Actuator,TM561
  11. Research on Led Street Lamp Driver and Its Reliability Tolerance Design,TN86
  12. Research on High Efficiency Impuse Energy under the Control of Charging Power Source,TM461.5
  13. Research on the Radiation of Magnetic Near-Field and Emi Model in Flyback Converter,TM46
  14. Research on Controllable High-Frequency Pulse Welding Power Source,TG434.1
  15. Research on Permanent Magnetic Actuator of Large Capacity Vacuum Interrupter,TM561
  16. Dual Input Flyback DC / DC Converter with,TM461
  17. Programmable Switching Power Supply,TN86
  18. An Electrolytic Capacitor-less Driver for High Brightness LED,TN312.8
  19. DC magnetic properties of soft magnetic materials, the ripple effects of measurement,TM271.2
  20. Multiple output flyback converter analytical model and to improve cross regulation Control Method,TM46
  21. One kind can work in multi-mode offline flyback converter Research and Design,TM46

CLC: > Industrial Technology > Electrotechnical > Electrical > Electrical switches,circuit breakers > Breaker > Vacuum Circuit Breaker
© 2012 www.DissertationTopic.Net  Mobile