Design And Implementation Of Non-contact Slip Ring Coupling Mechanism Based On MC-WPT Technology

Inductively Coupled Power Transfer(ICPT)technology converts electrical energy into a high-frequency magnetic field that is coupled to the energy pick-up end by the coupling of a magnetic field.The application of this technology makes the transmission of electrical energy safer and more flexible.Therefore,the wireless energy transmission technology has been widely used and popularized in various fields.The traditional slip ring power supply is not safe enough and convenient because it realizes power transmission through electrical contact.However,the existing non-contact slip ring,although its power and efficiency can meet the demand,but often it neglects the application requirements in a specific application,resulting in its large mass,large volume,and magnetic shielding performance is not high enough.For many specific applications.Therefore,it is urgent to optimize the coupling mechanism of the non-contact slip ring,so that the system can achieve both small volume,light weight and good magnetic shielding performance.In this paper,the optimal design of the electromagnetic coupling mechanism of the non-contact slip ring based on MC-WPT technology is studied.The width of the core is controlled according to a certain rule,and then it is optimized.Based on the characteristics of non-contact slip ring and application requirements,this paper summarizes the research status of non-contact slip ring power transmission at home and abroad,and combines the specific application occasions to carry out targeted analysis.In this paper,the non-contact slip ring structure based on MC-WPT technology and the width of magnetic material are studied.Firstly,the demand analysis in the application of this paper,as well as the structure of the coupling mechanism and the structural scheme of the magnetic material are selected.The constraints of the coupling mechanism and the final design goals were analyzed.Finally,the simulation model was established in the COMSOL multiphysics simulation software,and the relationship between the mutual inductance and the rotation angle under different core group numbers and the number of corresponding core groups were obtained.Core quality and magnetic shielding performance of the coupling mechanism;taking the balance of mass,magnetic shielding performance and mutual volatility in the rotation process as the ultimate goal,setting the objective function,and performing weight assignment and consistency check on each parameter,The parameters of the different magnetic materials are used to satisfy the requirements of the system.The AHP method is used to optimize the parameters,and the optimal parameter set of the coupling mechanism is obtained.The effectiveness of the coupling mechanism is optimized by simulation and experiment.According to the theoretical analysis,combined with COMSOL multiphysics simulation and experiment,the experimental results prove the correctness of the optimization analysis of the coupling mechanism.The experimental results show that the basic performance and magnetic shielding performance of the coupling mechanism can be satisfied by the coupling mechanism after the magnetic material width is changed.