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Research on Variable Frequency Speed Regulation Control System for Asynchronous Motor

Author: ZhaoBoYan
Tutor: HuangManLei
School: Harbin Engineering University
Course: Motor and electrical
Keywords: Asynchronous motor Vector control SVPWM Fuzzy PID DSP
CLC: TM343
Type: Master's thesis
Year: 2009
Downloads: 724
Quote: 4
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Abstract


The frequency range of the induction motor variable frequency speed control system , dynamic response , speed accuracy, low frequency torque , efficiency has great advantages . With the rapid development of power electronics technology and computer technology , as the basis of the AC motor frequency control technology has also made considerable progress, based on SVPWM induction motor vector control system as an important research direction in modern AC drive control , gradually become a research hotspot . Induction motor drive system is a multi- variable , strong coupling of the nonlinear system , although the conventional PID control algorithm is simple and reliable , but the effect of the nonlinear system control for asynchronous motor . Fuzzy control an important branch of intelligent control , do not need to create a precise mathematical model of the object , and has good robustness and nonlinear control characteristics , is ideal for induction motor drive system . In order to improve the accuracy of the induction motor speed control and improve the efficiency of the use of motor target traditional PID controller and fuzzy PID controller , based on the principle of SVPWM control application in induction motor speed control system . This paper first introduces a PWM control method of induction motor speed control method and inverter . And described the vector control , coordinate transformation , the basic principle of space vector modulation , a mathematical model of asynchronous motor in different coordinate systems , and laid the foundation for the design of asynchronous motor vector control system . At the same time traditional PID controller and fuzzy PID controller model . MATLAB / Simulink - based platforms to verify control effect , the paper established a computer simulation model of the controller , simulation results , and the results of detailed analysis . Compare the effect of traditional PID control and fuzzy PID control , can be seen from the simulation results using fuzzy PID control algorithm has many advantages . To TI's TMS320F2812 DSP control chip to control the core design of the asynchronous motor control system , the hardware system , including the main circuit , power driver circuit , voltage , current detection circuit circuit . The design of the control software , and gives the flowchart of the software . The experimentally measured waveform , verify the correctness and validity of the control method .

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