Research On Rotor Topological Structure And Strength Of Synchronous Reluctance Motor

Due to the limited and strategic nature of high-performance rare earth permanent magnet materials,the price of permanent magnet materials is getting higher and higher,which will increase the cost of permanent magnet motors.People urgently need to find a motor performance and permanent magnet motor.Approximately,motors that use less or no permanent magnet materials.Therefore,synchronous reluctance motors have entered people’s field of vision.The key problem of synchronous reluctance motors lies in the rotor topology,and the topology is related to the strength.The rotor topology and strength are One of the focuses that affect the performance and stable operation of synchronous reluctance motors has important engineering value and theoretical significance for motor design and operation.Based on the principle of closing the minimum path of reluctance,the shape of the magnetic barrier,the number of magnetic barrier layers,the proportion of magnetic barrier layers,the width of magnetic bridges and magnetic ribs are determined for the main structures of the rotor air magnetic barrier,rotor magnetic ribs,and rotor magnetic bridge.As the main objective of optimization,while taking into account the influence of the air gap between the stator and the rotor,the electromagnetic torque,power factor and salient pole ratio are the optimization objectives,and the rotor structure indicators are optimized item by item based on the control variable method,and Taguchi orthogonal is used the method comprehensively optimizes multiple index parameters.Based on the comparative analysis of the two optimization results,a relatively optimal rotor topology model is determined.On the basis of optimizing the rotor topology model,the effects of eccentric faults on the performance of synchronous magnetic blocking motor,calculated and analyzed the dynamic electromagnetic distribution characteristics and variation rules when the synchronous magnetic resistor rotor had eccentricity,in consideration of magnetic saturation Next,the dynamic electromagnetic calculation model under rotor eccentric fault is established.The stator tooth wall,rotor magnetic rib,and rotor surface dynamic electromagnetic force when the rotor is calculated,revealing the influence of eccentricity on its electromagnetic force distribution.Based on the principle of force balance,the rotor structure mechanical analysis model,combined with the characteristics of the synchronous magnetic resistor rotor topology,the proportion of rotor magnetic ribs,rotor magnetic bridges and magnetic barrier layers,revealing magnetic rib rotary and non-magnetic rib rotors change the mechanical strength of each position under different speeds,prove that the rotor magnetic ribs help to improve the mechanical strength of the air barrier position,and analyze the predicted magnetic barrier and magnetic ribs in rated speed The change in the variable variation of the rotor,provides a reference for synchronous magnetic resistance motor safety operation.