A novel wind energy harvesting system with hybrid mechanism for self-powered applications in subway tunnels

Abstract With the rapid development of urban rail transit, the safety maintenance of subway tunnels has attracted attention in various countries. Tunnel safety monitoring systems are used to ensure the safety of subway operation. This paper presents a new type of self-powered system for WSN nodes in tunnels to solve the power supply problem in subway tunnel safety monitoring systems. This new self-powered system collects wind energy in subway tunnels and converts it into electrical energy for storage and utilization. The system is composed of three parts: electromagnetic wind energy acquisition module, piezoelectric wind energy acquisition module, and power generation energy storage module. The electromagnetic wind energy acquisition module uses the principle of electromagnetic induction to convert wind energy into electrical energy. The piezoelectric wind energy acquisition module uses piezoelectric patches to convert wind energy into electrical energy. The power generation energy storage module converts the collected AC power into DC power, stores it in the supercapacitor, and supplies power to the WSN nodes. Experimental data shows that the energy output power of the system at a wind speed of 7 m/s is 59.31 mW. The Chengdu subway line 2 was selected for case study; the energy consumed by WSN nodes accounts for 49.4%–59.8% of the energy collected by the system. The proposed system can provide continuous and stable power for WSN node systems in subway tunnels.

[1]  Xingjian Jing,et al.  Improving low-frequency piezoelectric energy harvesting performance with novel X-structured harvesters , 2018, Nonlinear Dynamics.

[2]  Wei-Hsin Liao,et al.  Design and analysis of a piezoelectric energy harvester for rotational motion system , 2016 .

[3]  Wu Xiaoping,et al.  A high-efficiency multidirectional wind energy harvester based on impact effect for self-powered wireless sensors in the grid , 2019, Smart Materials and Structures.

[4]  W. A. El-Askary,et al.  Harvesting wind energy for improving performance of Savonius rotor , 2015 .

[5]  Wang Mingnian,et al.  A Study on the Natural Wind Calculation Method and Energy Conservation in Extra-Long Highway Tunnels , 2016 .

[6]  Guang Meng,et al.  A water-proof magnetically coupled piezoelectric-electromagnetic hybrid wind energy harvester , 2019, Applied Energy.

[7]  Haifeng Wang,et al.  Safety monitor for train‐centric CBTC system , 2018, IET Intelligent Transport Systems.

[8]  Yanping Yuan,et al.  A portable high-efficiency electromagnetic energy harvesting system using supercapacitors for renewable energy applications in railroads , 2016 .

[9]  Abbas Ebrahimi,et al.  Transient response of the flexible blade of horizontal-axis wind turbines in wind gusts and rapid yaw changes , 2018 .

[10]  Yanping Yuan,et al.  A High-efficiency Road Energy Harvester Based on a Chessboard Sliding Plate Using Semi-metal Friction Materials for Self-powered Applications in Road Traffic , 2018, Energy Conversion and Management.

[11]  Pj Bennett,et al.  Wireless sensor network for monitoring transport tunnels , 2010 .

[12]  Nidal Abu-Hamdeh,et al.  Construction and numerical analysis of a collapsible vertical axis wind turbine , 2017 .

[13]  Shuliang Wang,et al.  A multiple perspective method for urban subway network robustness analysis , 2018 .

[14]  Naasson P. de Alcantara,et al.  Corrosion Assessment of Steel Bars Used in Reinforced Concrete Structures by Means of Eddy Current Testing , 2015, Sensors.

[15]  Roberto Passerone,et al.  Self-Powered WSN for Distributed Data Center Monitoring , 2016, Sensors.

[16]  P. Laws,et al.  Modified Savonius wind turbine for harvesting wind energy from trains moving in tunnels , 2019, Renewable Energy.

[17]  Zhengbao Yang,et al.  Toward a 0.33 W piezoelectric and electromagnetic hybrid energy harvester: Design, experimental studies and self-powered applications , 2019 .

[18]  Yanping Yuan,et al.  A portable renewable solar energy-powered cooling system based on wireless power transfer for a vehicle cabin , 2017 .

[19]  Zhonghua Zhang,et al.  Study on a piezo-windmill for energy harvesting , 2016 .

[20]  Fengshou Gu,et al.  Energy Harvesting Technologies for Achieving Self-Powered Wireless Sensor Networks in Machine Condition Monitoring: A Review , 2018, Sensors.

[21]  Xiaohui Xu,et al.  Integration of Energy Harvester for Self-Powered Wireless Sensor Network Nodes , 2014, Int. J. Distributed Sens. Networks.

[22]  Bin He,et al.  Spatial–temporal compression and recovery in a wireless sensor network in an underground tunnel environment , 2014, Knowledge and Information Systems.

[23]  Huicong Liu,et al.  A Study on Piezoelectric Energy-Harvesting Wireless Sensor Networks Deployed in a Weak Vibration Environment , 2017, IEEE Sensors Journal.

[24]  Jiawen Xu,et al.  Modeling and analysis of piezoelectric cantilever-pendulum system for multi-directional energy harvesting , 2017 .

[25]  Cheng Lu,et al.  Vibration-induced aerodynamic loads on large horizontal axis wind turbine blades , 2017 .

[27]  F. E. S. Santos,et al.  Energy harvesting from wind and water for autonomous wireless sensor nodes , 2012, IET Circuits Devices Syst..

[28]  P. Laws,et al.  Improved design of Savonius rotor for green energy production from moving Singapore metropolitan rapid transit train inside tunnel , 2018, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.

[29]  Chang De-gong.  A Formula for Accurate Calculation of a Cam′s Pressure Angle , 2003 .

[30]  Yan Zi-xin.  Vibration and Noise Analysis of Permanent Magnet DC Motor , 2008 .

[31]  Feihu Zhang,et al.  A Study on the Model of Detecting the Variation of Geomagnetic Intensity Based on an Adapted Motion Strategy , 2017, Sensors.