Design Of Flywheel Energy Storage Device With Electromagnetic Slip Clutch And Speed Control Method

At present,the problem of energy shortages is gradually emerging.Relevant topics such as reducing automobile fuel consumption and strengthening energy use have gradually entered the public vision.Brake energy recovery technology is a mature solution at present,and the flywheel energy storage method is a more efficient energy storage method.More and more researchers of energy feedback technology have begun to pay attention to this energy storage method.Adopting a more feasible method to improve the efficiency of automobile braking energy recovery is a subject worthy of further discussion.Therefore,this paper proposes a two-stage flywheel energy storage system with an electromagnetic slip clutch,which is mainly composed of a two-stage flywheel,an electromagnetic transmission mechanism and an electronic speed control device.In recent years,great achievements have been made in the research of flywheel rotor shapes and materials at home and abroad.Two-stage and multi-stage flywheels have become a new research direction.The automobile braking energy recovery transmission system has also developed from the original mechanical transmission to more diversified.This article focuses on the research of electromagnetic transmission.First,the two-stage flywheel device is designed and its characteristics are analyzed.Mainly design its flywheel rotor shape,material selection,flywheel arrangement and transmission ratio between the first stage flywheel and the second stage flywheel.After certain parameters other than the transmission ratio are selected,the energy storage characteristics of the two-stage flywheel are analyzed and evaluated based on different flywheel energy storage capacities and different transmission ratios,and compared with the traditional single-stage flywheel to facilitate its adaptation to different Select requirements.Because the speed of the second-stage flywheel is generally high,finite element analysis is performed to verify that its strength can meet the design requirements.Secondly,the test device based on the existing two-stage flywheel system with electromagnetic slip clutch simulates the braking energy recovery of the car under different braking initial speed conditions,and uses the electromagnetic slip clutch to adjust the output speed of the energy storage flywheel so that It achieves better energy recovery effect.The test results show that the braking energy recovery of this method is considerable,but there are still shortcomings such as overshoot caused by the adjustment of the electromagnetic speed control method,and there is room for optimization.Finally,based on the results of the previous simulation experiments,the principle of speed regulation was analyzed,and the shortcomings were found for optimization.Matlab simulation was performed on the original current-speed double-closed-loop speed control method.The simulation results are consistent with the test results.There is an overshoot phenomenon in the adjusted speed and the speed rises slowly.On this basis,the current-speed double-closed-loop speed control method is analyzed and fuzzy control is added for optimization.The simulation structure shows that fuzzy control can effectively eliminate speed overshoot and increase the speed of speed to achieve a more ideal control effect.Good anti-interference.