EAGER: Multi-source Power Scavenging Schemes

EAGER：多源电力回收方案

• 批准号: 0938870
• 负责人: Ephrahim Garcia
• 金额: $ 10万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-15 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0938870&HistoricalAwards=false
• 关键词: EAGER; Multi; source; Power; Scavenging

The creation of self-powered, health monitoring systems is possible only through the harvesting of energy from the environment. Energy in the environment can be converted to stored electrical energy by a variety of means, such as solar energy collection and mechanical power harvesting. Solar power is the most established technique, and can generate low voltage, moderate current at 10 mW/cm2. The drawbacks of solar for this application are its dependence on direct sunlight. The PI proposes to utilize vibrations from machines and wind induced structural oscillations to generate mechanical power that can be tapped as an electrical power source. Piezoelectric materials are compact, energy dense actuators and have unique properties for energy harvesting. They are capable of generating high voltages for modest levels of strain. Researchers have shown that nonlinear switching can enhance the performance of piezoelectric power harvesting, and it suggests that power electronics need to be considered when designing such systems. This approach can increase the theoretical power harvested from a piezoelectric by 400%. Additionally, circuits that can switch using self-generated power and sensing, in synchronization with the strain of piezoelectric devices will be also investigated.This is an EAGER project with a GOALI component.

只有通过从环境中收集能量才能创建自供电，健康监测系统。环境中的能量可以通过各种方法（例如太阳能收集和机械功率收集）转换为存储的电能。太阳能是最成熟的技术，可以在10 mW/cm2时产生低压，中度电流。对于此应用程序，太阳能的缺点是它依赖于直射的阳光。 PI提议利用机器和风引起的结构振荡的振动来产生可以将其作为电源来源的机械功率。压电材料是紧凑的，能量密集的致动器，具有独特的能量收集特性。他们能够为适度的应变产生高电压。研究人员表明，非线性切换可以增强压电电力收获的性能，这表明在设计此类系统时需要考虑电力电子设备。这种方法可以将从压电收获的理论能力增加400％。此外，还将研究与压电设备的应变同步使用自我生成的能力和传感的电路。这是一个急切的项目，具有靶向组件。