Dissertation > Excellent graduate degree dissertation topics show

Position Sensorless Control for Permanent Magnet Synchronous Motor Based on a New Sliding Mode Observer

Author: ChenYanKun
Tutor: ChenZuo
School: Tianjin University
Course: Electrical Engineering
Keywords: Permanent magnet synchronous motor Sliding mode observer phase-locked loop Sensorless control
CLC: TM341
Type: Master's thesis
Year: 2012
Downloads: 8
Quote: 0
Read: Download Dissertation

Abstract


With the widespread application of high-performance permanent magnetsynchronous motor (PMSM), the requirements to the control performance isbecoming increasingly high. To achieve precise vector control of PMSM, theknowledge of rotor position must be available for the closed-loop control. Generally,the rotor position is measured by a shaft position sensor such as an optical encoderand a tachogenerator. However, the utilization of these sensors will increase the sizeand volume of the motor. Besides, it will make the motor control system morecomplex, and limit the application of PMSM in a relatively harsh environment.Therefore the sensorless control method with high reliability and simple maintenanceis particularly important to the control of PMSM. A novel sensorless control strategybased on a new sliding mode observer (SMO) is proposed in this paper to achieve theposition sensorless control of PMSM.On the basis of analyzing the vector control and sliding mode variable structurecontrol strategies, the strategy of traditional SMO for position sensorless control ofPMSM is analyzed. The result shows that there are two major problems with thetraditional SMO: the chattering and inaccurate initial position estimation. To solve theaforementioned problems brought by the traditional SMO, a new SMO for thesensorless control of PMSM is proposed. The quasi-sliding mode control is applied tothe new SMO to reduce the chattering problem in the traditional SMO; andphase-locked loop (PLL) is used to extracts the rotor position, which solves the phaselag of the rotor position by eliminating the low-pass filter part.In order to verify the feasibility and effectiveness of the new sliding modeobserver, the sensorless control model of PMSM based on the new sliding modeobserver is built and the performance of the new SMO is verified through simulation.The simulation results show that: the new SMO can accurately estimate the rotorposition and have a fast dynamic response at different conditions such as constantspeed, speed step and load torque disturbance. It can achieve the position sensorlesscontrol in a wider speed range. In addition, when there is a change in the statorresistance and stator inductance, the proposed SMO can also estimate the rotorposition accurately and have a strong robustness to the parameter perturbations.

Related Dissertations

  1. Parameterization Design and Research of Permanent Magnet Synchronous with Fractional-slot and Concentrated Winding,TM341
  2. Research on High Efficiency Interior Permanent Magnet Synchronous Motor,TM341
  3. The Research of Control System of Permanent Magnet Synchronous Motor Based on DSP,TM383.42
  4. On Attitude Control and Vibration Suppression of Flexible Spacecraft,V448.2
  5. Chaos Synchronization and Chaos Control of Permanent Magnet Synchronous Motor,TM301.2
  6. Design and Implementation of Rotational Inverted Pendulum Control System Based on Sliding Mode Observer,TP13
  7. Application of FPGA in Low SVG,TN791
  8. Position Sensorless Speed Control System Permanent Magnet Synchronous Motors Based on the Armature Resistance Identification,TM341
  9. Design of the Position Sensorless BLDCM Controller Based on STM32,TM33
  10. Research on Frequency Conversion Control of Synchronous Motor,TM341
  11. Research on the STM32 Based Sensorless Air-Conditioner Compressor Vector Control System,TB652
  12. Research and Design for CDR in Ultra High-speed Optical Fiber Communication Systems,TN929.11
  13. Design and Implementation on Drive Control System of Industrial Sewing Machine,TP273
  14. Nonlinear System Fault Diagnosis and Reconstruction Based on Sliding Mode Observers,TP13
  15. Development of Electric Actuator Servo System,TM921.541
  16. Investigation on New Topology and Control Strategy of PMSG-based Wind Power System,TM315
  17. Research and Design of Switched Reluctance Machine Drive System,TM352
  18. Sensorless Control of PMSMs Based on Nonlinear Observer,TM341
  19. Research on Sensorless Control of New DCM,TM33
  20. An Ultra Low-Voltage, Low-Power PLL,TN911.8
  21. Sensorless Control for Multiphase Bearingless Motor with Single Set of Windings,TM301.2

CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor
© 2012 www.DissertationTopic.Net  Mobile