A water-proof magnetically coupled piezoelectric-electromagnetic hybrid wind energy harvester

By Lin-Chuan Zhao, Hongxiang Zou, Ge Yan, Fengrui Liu, Ting Tan, Wenming Zhang, Zhike Peng, Guang Meng. Applied Energy, 2019

258 citations recorded by the source corpus.

Abstract Small-scale wind energy harvesting can be a potential way to yield endless electrical energy for small and micro mechanical systems, which has gained extensive interest from both the academia and industry. The environmental adaptability and reliability of the harvester are key issues that cannot be ignored in practical applications. To overcome these challenges, we propose a novel water-proof hybrid wind energy harvester (WP-HWH) using magnetic coupling and force amplification mechanisms. Using a symmetrical opposite magnetic arrangement, the resistance torque is reduced as much as possible and the effective magnetic force is enhanced, which is beneficial to harvest energy at low wind speeds. The magnetic force can be further amplified and applied to the piezoelectric layer more evenly, thereby achieving higher power density and better reliability. The key components of the energy harvester can be packaged easily owing to the non-contact magnetic coupling mechanism. Thus, it can operate effectively in a harsh environment, such as rainfall. A theoretical model is developed to characterize the WP-HWH. Both simulations and experiments are performed to validate the design and analysis of the WP-HWH. The experimental results indicate that combining the advantages of piezoelectric energy harvester and electromagnetic energy harvester, the WP-HWH has enhanced flexibility for practical applications as well as an outpower. Additionally, under rainfall, the WP-HWH can operate continuously for more than 100,000 cycles and saturates at 3157.7 μW at a wind speed of 7.0 m/s, implying good mechanical durability.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/0c3b8e30216763ff6fe563dd18df3a85d9505cf4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. Xinge Guo
2. Long Liu
3. Chengkuo Lee
4. Huicong Liu
5. Eric M. Yeatman
6. Hailing Fu
7. Lining Sun
8. Tianyiyi He

In Electrical and Electronic Engineering

1. Chengkuo Lee
2. Huicong Liu
3. Hailing Fu
4. Xinge Guo
5. Eric M. Yeatman
6. Long Liu
7. Shahrzad Towfighian
8. Wei Yang

In Mechanical Engineering

1. Xinge Guo
2. Chengkuo Lee
3. Huicong Liu
4. Long Liu
5. Hailing Fu
6. Eric M. Yeatman
7. Lining Sun
8. Shahrzad Towfighian

Citations in the corpus

• Hybrid energy harvesting technology: From materials, structural design, system integration to applications (2020, methodology): “Configuration illustration of the PE-EM hybrid systems for harvesting airflow (a) [119], (b) [121] and (d) [122] and for collecting acoustic energy (c) [120].”
• Promoting smart cities into the 5G era with multi-field Internet of Things (IoT) applications powered with advanced mechanical energy harvesters (2021, background): “Zhao et al. proposed a waterproof magnetically coupled piezoelectric-electromagnetic hybridized wind energy harvester (WP-HWH) [235].”