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Title Vector Control Simulation of Surface- mounted Permanent Magnet Machine Abstract Vector control and direct torque control are two control methods of PMSM main application. In order to verify the correctness of the two control modes in various parts of the output characteristics of the AC drive system design process, and provide the necessary design parameters for its design, the use of Matlab / Simulink toolbox to build a simulation model of the system will be the actual design of the system to provide adequate theoretical basis. In this paper, permanent magnet synchronous motor for the study will be applied to vector control of permanent magnet synchronous motor control thought, vector control simulation model, the successful implementation of the change of speed real-time control to achieve the purpose of smooth running permanent magnet synchronous motor. The main content of this work done by the following first discusses the relationship between simulation and modeling. The simulation modeling is given followed by the five elements of classification. The structure and characteristics of PMSM were analyzed. The permanent magnet synchronous motors equations of motion in different coordinate systems to explore in depth the permanent magnet synchronous motor vector control principle is studied. A reasonable pision of the control system of each module is built to verify direct torque control theory, which gets a good performance. 41323
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Keywords Magnet synchronous motor, vector control, mathematical modeling, simulation
目录
Introduction .. 1
1.1 Background research . 1
1.2 Research status .. 2
1.3 Classification of permanent magnet synchronous motor drive system 3
1.4 Purpose and significance . 5
Permanent magnet synchronous motor structure and Mathematical Model .. 7
2.1 Permanent Magnet Synchronous Motor Overview . 7
2.2.1 Structure of permanent magnet synchronous motor . 7
2.1.2 Features of PMSM . 7
2.1.3 Categories of PMSM 8
2.2 Coordinate transformation . 9
2.2.1 Three-phase static coordinate system (A-B-C shaft) 9
2.2.2 Two-phase stationary reference frame (α-β Shaft) .. 10
2.2.3 Two-phase rotating coordinate system (d-q Shaft) . 10
2.2.4 Three-phase static coordinate system transformation line between the two-phase
stationary coordinate(3s/2s) . 11
2.2.5 Converting two-phase stationary coordinate system and the two-phase rotating
coordinate systems (2s/2r) . 11
2.3 PMSM mathematical model .. 12
2.3.1 Permanent magnet synchronous motor under the A-B-C coordinates mathematical
model 12
2.3.2 PMSM α-β coordinates mathematical model .. 13
2.3.3 Permanent magnet synchronous motor under the d-q coordinate system mathematical
model 15
2.4 Chapter summary .. 16
Vector control of PMSM . 17
3.1 Space Vector Control System. 17
3.1.1 Vector control principle 17
3.1.2 Mathematical model of permanent magnet synchronous motor vector control 19
3.2 Permanent magnet synchronous motor vector control system closed-loop control method of
choice. .. 20
3.3 SVPWM control principle .. 21
3.4 Chapter summary .. 22
System Simulation 23
4.1 Establishment of permanent magnet synchronous motor vector control simulation module24
4.1.1 Coordinate transform module 24
4.1.2 SVPWM module 25
4.1.3 Inverter model.. 29
4.2 Simulation Research 29
4.3 Chapter summary .. 32
Summary and Outlook . 33
5.1 Work Summary .. 33
5.2 Research Prospects .. 33
Acknowledgements 35