Design and Control of Axial Field Flux-switching Fault-tolerant Machines
کتابخانه الکترونیکی دیتا ساینس
شناسه: Thesis-12212020
عنوان: Design and Control of Axial Field Flux-switching Fault-tolerant Machines
لینک: https://gb.oversea.cnki.net/
زبان: چینی
قیمت: 15,600 تومان
With the development of electric vehicle(EV),the reliability and security of the motor drive system has been demanded highly in the recent years.EV can still work reliably when the motor drive system encounters some failures.Therefore,the design of fault-tolerant motor and control system has become the focus research all over the world.Axial field flux-switching fault-tolerant(AFFSFT)machine is a novel axial field permanent magnet machine.It combines the advantages of axial field permanent magnet machine and fault-tolerant machine,such as short axial size,small volumes,large power and torque density,and high fault tolerant capability,which make it suitable to the application field of direct drive electrical vehicles.In this dissertation,these key issues for AFFASFT machine are deeply and systematically studied,including the design theory,the method of analysis and optimization,the different topologies,the electromagnetic performance,and the control method.Both the simulant and experimental results are given to verify the theoretical analysis.This work lays an important foundation of the theory and technology in order to further improve the reliability of drive system,and increase alternative schemes of drive system for EV.The research works of this dissertation are as follows:1.The structure,the working principle and the windings’ complementarity of a three-phase AFFSFT machine are analyzed in details.The power equation of AFFSFT machine and permeance between stator tooth and rotor pole are deduced,which lay theoretical base for the design of AFFSFT machine.2.The influence of structural parameters on inductances are investigated,including stator/rotor pole numbers,split ratio(Dsi/Dso),stator side tooth width,stator middle tooth width,thickness of permanent magnet,rotor pole width,air-gap axial length,and rotor axial length.Based on these,the design parameters of AFFSFT machine are optimized in order to attain the fault-tolerant design object of large self-inductance and small mutual-inductance,and the design scheme of AFFSFT machine is established.Taking advantage of three-dimensional finite element method,the static characteristics of AFFSFT machine are studied,
With the development of electric vehicle(EV),the reliability and security of the motor drive system has been demanded highly in the recent years.EV can still work reliably when the motor drive system encounters some failures.Therefore,the design of fault-tolerant motor and control system has become the focus research all over the world.Axial field flux-switching fault-tolerant(AFFSFT)machine is a novel axial field permanent magnet machine.It combines the advantages of axial field permanent magnet machine and fault-tolerant machine,such as short axial size,small volumes,large power and torque density,and high fault tolerant capability,which make it suitable to the application field of direct drive electrical vehicles.In this dissertation,these key issues for AFFASFT machine are deeply and systematically studied,including the design theory,the method of analysis and optimization,the different topologies,the electromagnetic performance,and the control method.Both the simulant and experimental results are given to verify the theoretical analysis.This work lays an important foundation of the theory and technology in order to further improve the reliability of drive system,and increase alternative schemes of drive system for EV.The research works of this dissertation are as follows:1.The structure,the working principle and the windings’ complementarity of a three-phase AFFSFT machine are analyzed in details.The power equation of AFFSFT machine and permeance between stator tooth and rotor pole are deduced,which lay theoretical base for the design of AFFSFT machine.2.The influence of structural parameters on inductances are investigated,including stator/rotor pole numbers,split ratio(Dsi/Dso),stator side tooth width,stator middle tooth width,thickness of permanent magnet,rotor pole width,air-gap axial length,and rotor axial length.Based on these,the design parameters of AFFSFT machine are optimized in order to attain the fault-tolerant design object of large self-inductance and small mutual-inductance,and the design scheme of AFFSFT machine is established.Taking advantage of three-dimensional finite element method,the static characteristics of AFFSFT machine are studied,