Design And Optimization Analysis Of Permanent Magnet Synchronous Motor For Roller Shutter Doors

Energy shortage and environmental pollution are serious issues facing countries,so most industries are beginning to transform towards energy conservation and environmental protection.As an important component of various machinery,electric motors are widely used.Permanent magnet synchronous motors(PMSM)have the advantages of simple structure and high efficiency,A potential energy-saving and environmentally friendly motor suitable for rolling shutter doors with high motor reliability and low starting voltage.With rapid response and other features,a 12 slots 10 poles surface mounted permanent magnet synchronous motor was designed and optimized for air magnetic density,air reverse electric pulse,gear torque and multi physical coupling simulation.Finally,a prototype was made and tested.The main research areas include:Firstly,understand the research status of roller shutter motors at home and abroad,determine the research topic,briefly introduce the development,benefits,and optimization of permanent magnet motor research,and introduce the different definitions,rotor structure,and performance of permanent magnet motors in detail.The importance and general optimization methods of gear torque optimization are briefly introduced.Secondly,the basic working principle and mathematical model of permanent magnet synchronous motor are analyzed,and the mathematical models of three-phase static coordinate system and rotor synchronous coordinate system are established,including the magnetic linkage equation,voltage equation,and power equation.According to the motor performance requirements and application scenarios,the main motor parameters,such as pole slot ratio,stator slot type,and related parameters,are designed.The cogging torque has a significant impact on motor performance and the Fourier decomposition method is used to analyze the gear torque expression.This expression is combined with the gear torque to analyze the general method of gear torque attenuation,Including: optimizing slot electrode coordination,optimizing electrode arc coefficient,etc.Then,the no-load performance of the motor is simulated and verified,including no-load magnetic field analysis,air gap magnetic density and back EMF analysis and optimization.As a motor design,a desktop permanent magnet synchronous motor is designed.According to the requirements of finite element analysis and finite element inspection of gear torque characteristics,a single objective advanced optimization is performed,Then,the reactive surface method is used to achieve multi-objective optimization objectives: output torque,gear torque,and torque pulsation.Finally,calculate the heat source parameters of the engine generator and establish a multi physical field simulation model.Simulate temperature rise and deformation of engine components.Through harmonic response analysis,the vibration acceleration spectrum and noise sound pressure distribution nephogram are obtained.The greater the engine loss,the higher the temperature;The mechanical strength of the rotor meets the stress requirements;The vibration and noise are within a reasonable range.According to the designed motor design and parameters,the characteristics of the prototype,vacuum anti electric prototype,etc.have been tested.