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Six-phase Induction Motor Vector Control System Based on DSP

Author: JiangCheng
Tutor: LiShan
School: Chongqing University of Technology
Course: Measuring Technology and Instruments
Keywords: Polyphase induction motor DSP Parameter measurement Vector control Motor control hardware platform
CLC: TM346
Type: Master's thesis
Year: 2011
Downloads: 57
Quote: 2
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Abstract


Relative to the three-phase induction motors , multi-phase induction motor has the advantages of high reliability , the torque ripple and small , multi-phase motor drive system has obvious advantages in high-power , high reliability and low DC voltage supply occasions . Motor digital control system based on digital signal processor (DSP) has become a trend , a good experimental platform is the basis for the completion of a high-performance control system . Firstly, the dynamic mathematical model of the six-phase induction motor to establish the six-phase induction motors in a natural base under dynamic mathematical model , based on clear six-phase induction motor winding structure , according to the principle of electromechanical energy conversion . Combined with the three-phase motor vector control method to establish a six-phase motor vector control program . In the vector control algorithm , very strict parameter requirements of the motor , the motor parameters do not match with the actual motor vector control algorithm makes the motor dynamic performance , caused by the oscillations of the electromagnetic torque . In this paper, the equivalent of six - phase motor model , respectively, through the DC motor stator resistance measurement test , single-phase stall tests measuring motor rotor resistance , given rotor leakage inductance , no-load tests measuring motor stator and rotor mutual inductance . Inverter 's own resources to complete the measurement of the parameters of the motor , simple , practical and accurate motor parameters can be provided for the vector control algorithm . The design and development of DSP-based motor control platform for the power of 7.5kW six-phase AC induction motor speed control system provides a good debugging and experimental platform . The design of the main points of the motor controller circuit design and the design of the control circuit , the main circuit includes a rectifier circuit and the inverter circuit , the control circuit includes a DSP microcontroller minimum system circuit , a drive circuit of the main circuit , the power supply circuit and the signal acquisition circuit , and has good anti-interference and control effect after tests proved the hardware system , a variety of other high-performance control algorithm can be achieved on this platform .

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