Dissertation > Excellent graduate degree dissertation topics show

The Study on Applications of Brushless Brushless DC Motor in Field Refrigerator Compressor

Author: SongZhenXing
Tutor: ChenYiGuang
School: Tianjin University
Course: Electrical Engineering
Keywords: refrigerator compressor brushless DC motor Positionsensorless back emf method
CLC: TB652
Type: Master's thesis
Year: 2012
Downloads: 0
Quote: 0
Read: Download Dissertation

Abstract


The most advanced field low-temperature refrigerator of foreign armies,with brushless DC compressor adopted, is gifted with small volume, highrefrigeration efficiency and anti knock performance, and thus can be used forblood refrigeration and blood components transportation, which means thetrend for the development of refrigeration technology.The People’s Liberation Army（PLA）adopts civilian refrigerator with ACcompressor in field condition, which has low temperature control ability andthus can not adapt itself to field environment. With the development ofelectronic technology and IT, the advanced refrigeration technology,temperature detection&control system, digital temperature display andrealtime recording system are integrated into the design and manufacture offield low-temperature refrigerator. The investigation, based on the servicerequirements of field low-temperature refrigerator of the PLA, puts forward thetactical&technical indexes and control system for the brushless DC motor.In the investigation, the structure and working principle of the brushlessDC motor are introduced, and its mathematical model and controlcharacteristics are analyzed.Several control methods for brushless DC motor without position sensorare compared, and the control principle of back-Electromotive Force (EMF)brushless DC motor is analyzed in detail. The control system forback-EMF-method-based brushless DC motor without position sensor isdesigned, and the components of the circuit and the anti-jam measures for thesoftware and hardware are introduced.The field low-temperature refrigerator, using brushless DC motor withoutposition sensor, can adapt itself to the harsh or complicated environment for itslow power, high refrigeration efficiency and alternative power supply by thevehicle, which is theoretically and practically significant for militarylow-temperature issue supply at wartime and peacetime.

Related Dissertations

  1. Research of Computer Aided Engineering of Brushless DC Motor,TM33
  2. The Design and Development of Intelligent Actuator,TM33
  3. Design and Implementation of the Electric Bicycle Drive and Control System,U484
  4. Research and Implementation of Automatic Clutch in Hybrid Electronic Vehicle,U463.211
  5. One kind of flat - stair walker device is designed with dual control system research,TU857
  6. The Studies of Brushless Motor System Design in Antenna Turntable Axis,TM33
  7. Application Research on Flywheel Energy Storage in Locomotives,U270.3
  8. Investigation of Electric Driving System of Two-wheel Driving Electric Vehicle Based on Permanent Magnet Brushless DC Motor,U469.72
  9. Research on Automotive Electro-Hydraulic Power Steering System,U463.4
  10. Research on the Control Problems of Tiltrotor Aircraft,V249.1
  11. Designand Research of Electric Power Steering System of Carrier Vehicles,U463.4
  12. Research on Brushless DC Motor Control System Based on DSP,
  13. Dual Clutch Control System for Hybrid-Electric Vehicle,U463.211
  14. Research on the Control Problems of Quad-Rotor Aircraft,V249.1
  15. A new type of micro- rotor aircraft flight control system design,V249.12
  16. Study on Brushless Dc Motor Control System Based on the Real-time Kernel uC/OS-II,TM33
  17. The Electronic Differential Control System for In-wheel Driven Three-wheeled Electric Vehicles,U489
  18. Study on Simulating of the Dynamic Driving System of In-Wheel Driven Electronic Vehicle Based on the Electronic Differential System,U469.72
  19. The Research of Discrete Time System Variable Structure Control Method Based on Improved Reaching Law,TP11
  20. Brushless DC Motor Torque Ripple,TM33
  21. Research on Wind Turbine Simulation System Based on Bldc,TM315

CLC: > Industrial Technology > General industrial technology > Refrigeration Engineering > Refrigeration machinery and equipment > Compressor
© 2012 www.DissertationTopic.Net  Mobile