Dissertation > Excellent graduate degree dissertation topics show

Phase-Shift Full-Bridge Portable Charging Power Supply for Electric Vehicles

Author: LiPing
Tutor: YangShiYan
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: active power factor correction phase-shift control zero voltage switching clamping diodes
CLC: U469.72
Type: Master's thesis
Year: 2011
Downloads: 331
Quote: 2
Read: Download Dissertation

Abstract


Currently, our country is facing increasingly serious environmental pollution and energy crisis brought by the rapid development of the automobile, Electric Vehicles become an important way to solve the two problems. However, the performance improvement of the energy storage batteries can’t match the development speed of Electric Vehicles, and the location of the charging station is fixed and they are inconvenient to be used. So it is necessary to develop a low-cost, flexible portable charging power supply, resupplying energy anywhere and anytime, to lay the foundation for a wide range of applications of the charging technology.The poor working conditions of the vehicles require that the charger must have a seal structure to block dust and some other things, so there is only one way to dissipate heat with natural cooling. Therefore, high efficiency becomes its most important technical features, and it should bring low harmonic pollution to the grid, with the characteristics of light weight, small size, high reliability, against mechanical shock and vibration.With the combination of the technical indicators and protection grade of the portable charger for Electric Vehicles, the overall scheme of charging power supply is determined with two circuits of the anterior active power factor correction circuit and the lag DC/DC converter. The specific forms of implementation of the two circuits are analyzed. On the one hand, the principle and necessity of the active power factor correction circuit are analyzed. By comparing the advantages and disadvantages of the different circuit topology and control methods which can achieve active power factor correction, the single-stage boost circuit topology and the corresponding average current control mode suitable for this system are selected. One the other hand, in order to get high efficiency of the charging power supply in a wide load range, the phase-shift full-bridge PWM converter is selected to accomplish the lag DC/DC converter. A variety of improved circuits of phase-shift full-bridge zero voltage switching PWM converters are listed. By comparing the advantages, disadvantages and the degree of difficulty to be achieved, the improved PWM converter added by two clamping diodes and one resonant inductor as the final solution is chose. The working principle of the improved converter is analyzed detailed, the functions of the added auxiliary part are discussed. The different conditions to achieve zero voltage switching for the forward and lag legs and the factors to cause secondary duty cycle loss are given.With the solutions and technical specifications of the charging power supply, the specific parameters of the main circuits and control circuits of the two circuits are designed separately. With the use of Saber and PSPICE simulation software, the simulation analysis and parameter optimization are carried out respectively. A 2.4kW charging power supply prototype for Electric Vehicle is developed, which is tested at different load conditions. The results show that, the charging power supply has high efficiency, high reliability and low harmonic pollution.

Related Dissertations

  1. The Research of a Novel High Efficiency PFC Circuit Based on One Cycle Control,TM46
  2. Development of High Power Three Phase APFC Base on DSP,TM714.1
  3. Process and Device Simulation of Image Lag Elimination in 4T Active Pixel,TP391.41
  4. Study on DC/DC Converters in the Electrical Network of the High Speed Maglev Train,TM46
  5. Research on Four-Quadrant Maglev Chopper,U266.4
  6. The Research on Active Power Factor Correction Technology with Average Current Mode,TM46
  7. Research of a Three-Phase Power Actor Correction Based on Single-Phase Active Power Factor Correction,TM46
  8. HID Lamp Tertiary Structure in the Research and Design of Electronic Ballasts,TM923.61
  9. Research of the Port Lighting Energy-saving Based on Dimming HPS Electronic Ballast,U653.95
  10. The Design of 270W Fan Station Switching Power Supply,TN86
  11. The Application of UC3855 and the Design and Realization of ZVT APFC Circuit,TM46
  12. Research and Development of High Performance Magnetron Sputtering Power Supply,TM46
  13. Design of Digital Soft-Switching PWM High-power DC110V Power Supply,TM46
  14. Study on Soft Switching Full-Bridge Three-Level DC-DC Converter,TM46
  15. The Research of Secondary Electric Power Supply Based on the Active Clamp and Soft Switching Technique,TM46
  16. Design of Active Power Factor Correction Controller IC Operating in Critical Conduction Mode,TM46
  17. Research on Multi-Module Input-Series Output-Paralleled Converter,TM464
  18. Research on the Two-Stage Active Power Factor Correction Converter in Single Phase,TM46
  19. Research on Soft-switching Power Amplifier and Electro-surgical Generator,TH777
  20. The Mc33260-based Active Power Factor Correction Cuk Research and Design,TM46
  21. Design of APFC Controller XD5265 with THD Optimizer Circuit Based on CRM,TM46

CLC: > Transportation > Road transport > Automotive Engineering > A variety of automotive > Various energy vehicles > Electric vehicles
© 2012 www.DissertationTopic.Net  Mobile