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Research On The Control Methods Of Field Oriented Control Of Induction Motor Drives Based On MRFAS

Posted on:2007-11-15Degree:MasterType:Thesis
Country:ChinaCandidate:Y YaoFull Text:PDF
GTID:2132360182473379Subject:Control theory and control engineering
Abstract/Summary:PDF Full Text Request
The rotor field oriented control has brought essential advances in AC variable speed drive system.Speed sensorless induction motor drive promotes the simplicity and robustness further,and two problems must be solved in the system:the speed estimation and rotor flux observation.Based on the former researches,the speed estimation and rotor flux observation methods are studied using the theory of Model Reference Adaptive System.Considering the time variability of the stator and rotor parameters of induction motors,the methods make real-time identification of the parameters to retain the dynamic performance of the drive system. With the speed sensorless Vector control of induction motor and fuzzy theory,MRFAS is applied to estimate rotation of induction motor in the speed-sensorless system.In order to improve the system Static performance using MRAS and MRFAS compesed system to estimate speed. Using the DSP from the hardware, the software two aspects has carried on the realization to the system. The simulation results show the design system has feasibility and reliability.
Keywords/Search Tags:Induction Motor, Speed Sensorless Field Oriented Control, Speed Estimation, Rotor Flux Observation, Model Reference Adaptive System, Fuzzy Control, Digital Singal Processor(DSP)
PDF Full Text Request
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