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Research on the Vector Control System of PMSM Based on DSP

Author: LianZuo
Tutor: LiuYanPing
School: Hebei University of Technology
Course: Communication and Information System
Keywords: permanent magnet synchronous motor vector control DSP
CLC: TM341
Type: Master's thesis
Year: 2011
Downloads: 100
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Abstract


Compared with other motors, permanent magnet synchronous motor is more simplified in structure, and it has lower wastage and higher efficiency. Unlike DC motor, permanent magnet synchronous motor is not equipped with brush and commutator.Moreover, compared with induction motors, permanent magnet synchronous motor does not need excitation device. Therefore, the power factor of PMSM is higher, and its torque inertia is bigger. Besides, each variable can be tested and more controllable. permanent magnet synchronous motor vector control system is faster in dynamic response, and it is more accurate than other motors. In addition, it has a lager range of speed regulation. Therefore, PMSM has attracted wide attention in AC servo control field from abroad.The thesis will present a vector control system, which makes use of TMS320F2812 produced by TI company for special use of motor control as the core apparatus. The design of this system is based on vector control system, adopting control strategy of current loop andspeed loop . The main work is listed as follows:(1)According to coordinate change theory, the paper demonstrates the mathematic model of the motor. Besides, it introduces the basic theory of motor vector control and the specific way to regulate space vector pwm.(2) The model of permanent magnet synchronous motor control system is constructed by making use of the emulating function of Matlab/simulink software. By means of the emulating experiments, the way that how the permanent magnet synchronous motor is working under the control of vectoe control system is presented, which lays foundation for the whole development of the system, and further proves the feasibility of space vector regulating means.(3) The hardware of the control system is designed into main electric circuit, control electric circuit, and drive electric circuit. It makes TMS320F2812, produced by TI company, as the core apparatus, which includes power drive electric circuit,level switch electric circuit, testing and collecting electric circuit, and protecting electric circuit.(4) The design of the software focuses on the control system of space vector. On the CCS3.1 developing platform, the main course and each kind of suspending course are compiled and tested.

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor
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