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Research on the Motor’s Out-of-step Preventive Control Strategies of Transportation System Driven by Permanent Magnet Linear Synchronous Motor

Author: JingPengHui
Tutor: WangFuZhong
School: Henan Polytechnic University
Course: Control Theory and Control Engineering
Keywords: PMLSM Out-of-step prevention and control strategies Stable margin Fuzzy Control
CLC: TM341
Type: Master's thesis
Year: 2009
Downloads: 30
Quote: 0
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Abstract


Segmented permanent magnet linear synchronous motor for hoisting system is a new type of cordless lifting system , it has the advantages of simple structure, high efficiency , energy saving , running distance and speed unlimited significantly , and has good prospects for development . However, the theoretical research and control technology is still immature , and is still in the experimental stage . Segmented permanent magnet linear synchronous motor system at run time , the motor out of step failure , has been plagued by designers and users . Avoid major casualties and economic losses during the operation due to motor step in order to ensure the system safe and reliable operation , it is necessary to take some prevention and control measures , and that the motor out of step faults detected motor trend at the state of the work of the out-of-step , to take timely measures , the motor control in stable workspace , not only to avoid the accident , but also improve work efficiency . The force angle characteristics and stability analysis on the basis of this article by the permanent magnet linear synchronous motor supply frequency and supply voltage of the permanent magnet linear synchronous motor running stability using fuzzy control theory based on fuzzy control of permanent magnet linear synchronous motor step-out prevention strategies . Bimodal fuzzy control structure , the policy to control the amount of power angle stability margin , changing the supply voltage and change the method of combining the speed of the motor is running , in order to achieve the purpose of preventing the motor out of step . The papers on the prevention and control of the entire out-of-step system modeling and simulation using Matlab / Simulink simulation software , simulation results demonstrate the feasibility of real-time control strategy . Hoist IPC and PLC (IPC PLC) - based experimental device , the experimental results show that the out-of-step prevention and control strategy can effectively improve the stability, security of permanent magnet linear synchronous motor running , and can achieve the desired control effect .

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