Study On The Recovery Of Track Vibration Energy Based On Cymal Transducer And Optimization Of Generation Performance

With the rapid development of urban rail transportation industry, wireless sensor, road safety monitoring of small power transmitter and other rail equipment is more and more in the security signal system. There are obvious differences in the cost of power supply equipment. The mountainous area is less developed transportation costs are very high, making the use of such safety equipment to bring cost resistance. In this research, we use the energy of the train track to obtain the electric energy by the piezoelectric conversion, and provide reliable energy for the electric equipment. On the one hand to obtain a reliable power supply, on the one hand to respond to the state’s new energy policy strategy.The research on the vibration energy recovery of the train operation is very important for the popularization of the electric equipment of the train operation line. In this study, the theoretical model of the vibration energy recovery system of the entire railway train is firstly carried out, and the simulation is carried out with the software under full load condition. In this study, the following work has been carried out.1 According to the research and analysis of electromechanical conversion mode in this research. Using piezoelectric material as the basis of mechanical and electrical conversion, according to the characteristics of large stress and low frequency load of vehicle track vibration, the Cymbal type transducer is selected as the electromechanical conversion device.2 Based on the D type piezoelectric equation, the electromechanical conversion model is established for the Cymbal transducer. According to the characteristics of large stress, the vibration energy of the transducer is designed, and the electrical output characteristics of the electromechanical conversion device are obtained by software simulation.3 The experimental verification of the energy recovery system of the track vibration is carried out. The structure of the piezoelectric component of the 25 Cymbal transducers is completed, and the experimental platform is recovered by the use of the track vibration energy. Electrical output data were acquired through the oscilloscope, and the parameters of the electrical output characteristics were obtained. In the end, the experimental results are compared with the results of theoretical simulation data, in the range of the allowable error range. The comparison results obtained the good agreement. It is proved that the model is feasible, and the theoretical model is reliable.The theoretical model simulation results show that the open circuit output voltage of 100 Cymbal transducer is 600 V or so, and the output power is 1.46 W. The experimental verification of the design of the 25 Cymbal transducers components, through the use of test bench test. The experimental data show that the open circuit output voltage range of 25 Cymbal transducer is between 60V~100V, and the output power is 296.5 μW at the optimal load. The experimental platform and real train running are reduced by a series of coefficients. The result of the conversion data and the simulation results of the model are more approximate to the certain error. In this study, a new method of energy recovery for the vertical vibration of the track is studied, and the results of the model and the data obtained provide a reliable theoretical basis for the vertical vibration energy recovery system.