The Analysis And Simulation Of Thermal Characteristics On Electrodynamic Vibration Generator

With the increase of the thrust of the electrodynamic vibration generator,especially the mature of the new type of compensating vibration generator technology,cooling problems have been gradually appeared.In this paper,we use the idea of finding the heat source ? calculating the thermal power ? calculating the temperature ? measuring,focusing on the cooling problems of the Induct-Ring(IR)of the 16-ton vibration generator and the armature of the 35-ton vibration generator.The main contents include:(1)Taking the 35-ton electrodynamic vibration generator as an example,the main heat problem of these direct coupled vibration generator,high temperature is easy at the bottom of the moving frame,is studied.The study uses the traditional calculation formula and the finite element method to calculate the induced current and the dynamic current generated at the bottom of the moving frame.In this paper,the magnetic circuit model of the platform is established,and the electromagnetic parameters related to the calculation are obtained.The circuit model of the platform is established,and the impedance characteristics and the eddy current in the moving frame are obtained.the effect of dynamic coil on the induced current is calculated and compared with the existing three different structures.The influence of the dynamic characteristics is also considered.(2)Taking the 16-ton IR vibration generator as an example,the main heat source,Induct-Ring is studied,the circuit model of the induction loop is established,and the induced current is calculated.We got induced current distribution and temperature distribution of IR by using finite element method.A variety of temperature measurement schemes are designed and the best scheme is selected.The measured data are in good agreement with the simulation results.Simulation and experiment are only used air-cooled.In this paper,the influence of wind speed,wind pressure and air gap width on the temperature of induction ring is studied by simulation method.Increased wind pressure and air gap width can improve cooling efficiency,but also bring the negative impact of energy waste,noise increases,and reduced magnetic field(3)The driving coil cooling capacity of the 16-ton IR vibration generator is studied.The finite element method is used to establish the precise driving coil model and the fine grid is meshed.The water pressure and the flow rate are linearly related to the temperature,and the temperature of the cooling water is evenly changed along the wire.The driving coil has enough cooling capacity at current working condition.The temperature measurement scheme of the coil is designed,and the deviation is small between the measured temperature data and the simulation result.