| 基于现场测试的道路压电俘能系统电学性能 |
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| 引用本文： | 王朝辉,王帅,宋志,余功新.基于现场测试的道路压电俘能系统电学性能[J].中国公路学报,2021,34(1):12-23. |
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| 作者姓名： | 王朝辉 王帅 宋志 余功新 |
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| 作者单位： | 长安大学公路学院, 陕西 西安 710064 |
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| 基金项目： | 陕西省科技创新能力支撑计划项目(2017KW-033);中央高校基本科研业务费专项资金项目(300102218207,300102219314,300102218304)。 |
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| 摘 要： | 为全面测评道路压电俘能系统在开放交通条件下的电学性能,采用16个自主研制的15 cm × 15 cm × 3 cm压电俘能装置并联,设计俘能模块布设点位,铺筑道路压电俘能系统现场测试段,基于随机开放交通条件下道路压电俘能系统开路电压波形信号响应特征,系统研究了现场不同荷载、不同车速工况下道路压电俘能系统电学输出规律,并...
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| 关 键 词： | 道路工程 发电路面 现场测试 俘能系统 压电装置 电学性能 |
| 收稿时间： | 2020-04-04 |
Electrical Performance of Road Piezoelectric Energy-harvesting System Based on Field Test |
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| WANG Chao-hui,WANG Shuai,SONG Zhi,YU Gong-xin.Electrical Performance of Road Piezoelectric Energy-harvesting System Based on Field Test[J].China Journal of Highway and Transport,2021,34(1):12-23. |
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| Authors: | WANG Chao-hui WANG Shuai SONG Zhi YU Gong-xin |
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| Affiliation: | School of Highway, Chang'an University, Xi'an 710064, Shanxi, China |
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| Abstract: | To comprehensively test and evaluate the electrical performance of a road piezoelectric energyharvesting system under open traffic conditions,a field test section of the system was paved with sixteen self-developed 15 cm × 15 cm × 3 cm piezoelectric energy-harvesting devices connected in parallel.The electrical output rules of the system under different loads and speeds were systematically studied based on the open-circuit voltage waveform characteristics of the system under random open traffic conditions. Moreover,the best matching resistance for energy collection of the system was determined based on the relationship between different loads and electrical performance. Finally, the energy collection and storage performance of the system was clarified based on the random and open traffic conditions. The results show that the output open-circuit voltage of the road piezoelectric energyharvesting system is 15. 0-29. 6 V and 50. 0-79. 2 V under the condition of being completely crushed by the car and medium-sized vehicles,respectively. The vehicle load has a significant effect on the electrical performance of the system,and the simultaneous rolling of the front and rear axles as well as expansion of the lateral distribution of the wheel track is beneficial to its electrical output. However,the rolling speed per cycle has little effect on the electrical output performance;the average output open-circuit voltage in the speed range of 30-40 km·h-1 to 50-60 km·h-1 increases by only 1. 47%. After matching the load resistance,its output power and output current generally increase first and then gradually decrease as the load resistance increases. Based on this,the best matching resistance for energy harvesting of the system is determined to be 2 kΩ;the corresponding output power is 23. 12 m W and the output current is 3. 3 m A. During the evening peak period,the effective storage energy of the system under the open traffic condition reached 76. 97 m J,which verifies the effectiveness of the energy collection and storage of the system. This work lays the foundation for the large-scale application of road piezoelectric powergeneration technology. |
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| Keywords: | road engineering power generation pavement field test energy-harvesting system piezoelectric device electrical performance |
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