|
 Short Course 3 |
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| TOPIC |
| • Power MEMS for Energy Harvesting from the Environment |
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| ORGANIZER AND PRESENTERS |
| • Prof. Luc Fréchette, Université de Sherbrooke, CRN2, Canada (organizer) |
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| DURATION: 3 lectures of 1 hr |
| 08:00-09:00 |
Registration |
| 09:00-10:00 |
Introduction and Fundamentals of Energy Harvesting
Pr. Luc Fréchette |
| 10:00-10:30 |
Coffee break |
| 10:30-11:30 |
Vibration Energy Harvesting
Pr. Luc Fréchette |
| 11:30-12:30 |
Thermal Energy Harvesting
Pr. Luc Fréchette |
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| SUMMARY |
This short course will convey the needs, principles, and technologies to produce electrical power at small scale by scavenging energy from the surrounding environment, with applications ranging from wireless sensors networks to automotive exhaust heat recovery. Following an introduction to the markets and applications, the main principles of conversion and sources of energy will be described, including vibration, thermal, solar, and wind. The course will then focus on emerging power MEMS technologies, specifically in the vibration and thermal energy harvesting domains. Underlying principles as well as MEMS implementation will be addressed for piezoelectric and electrostatic vibration energy harvesting, as well as micro heat engines and thermoelectrics for thermal energy scavenging.
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| OUTLINE |
- Introduction and Fundamentals
- Need for portable or distributed power;
- Markets and applications: wireless sensors networks, distributed and automonous MEMS/sensors, portable electronics and instruments, robots and mobility
- Power requirements and specifications
- Sources of energy;
- Types: vibration, thermal, wind, radiation, biochemical
- Availability and usability
- Energy density
- Principles of energy conversion
- Harvesting approaches for electrical power generation
- Power density
- Efficiency: definition and expectations
- Comparison of macro vs micro scale
- Traditionnal large scale technologies
- Miniaturization: challenges and benefits
- Novel micro-nano enabled approaches
- Vibration energy scavenging: principles and technologies
- Dynamics of vibrating systems
- Second order systems
- Types of harvesting approaches
- System modeling approaches
- Piezoelectric harvesting
- Principles
- MEMS implementation
- Electrostatic harvesting
- Principles
- MEMS implementation
- Thermal energy scavenging: principles and technologies
- Thermodynamics and heat transfer
- Micro heat engines:
- Thermodynamic power cycles
- Technologies and MEMS implementation
- Thermoelectric materials and application for thermal harvesting
- Principles of thermoelectricity
- MEMS implementation
- Applications: benefits, limitations, potential performance
- Prospects and future areas of research and development
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Biography of Presenters: |
Luc G. Fréchette received his Ph.D. and S.M. degrees from the Massachusetts Institute of Technology (MIT), Cambridge, in 2000 and 1997 respectively, following his B.Ing. studies at the École Polytechnique de Montréal in Canada. He currently holds the Canada Research Chair in Microfluidics and Power MEMS, and is a tenured Associate Professor in Mechanical Engineering at the Université de Sherbrooke, Canada. From 2000 to 2004, he was an Assistant Professor at Columbia University, New York, U.S.A. His research expertise is in microengineering of miniature systems for energy conversion (power MEMS), such as microfabricated heat engines, fuel cells, and energy harvesting with activities ranging from integrated device development to more fundamental microfluidics, heat and mass transfer studies in such microsystems. Dr. Fréchette also enjoys developing MEMS sensors and actuators for aerospace applications, such as silicon carbide flow sensors and micro-cooling technology. He is the author of over 40 publications and is actively involved in the organization of international conferences on MEMS. He is a member of the ASME, IEEE, and AIAA societies.
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