Force Multiplier Actuated Piezoelectric Energy Harvester for Roadway Energy Recovery
Demonstrating a system that can harvest energy from vehicles on California roadways.
Projects Updates/The Results
The project team completed basic design for the vibrational energy harvester, with a goal to maximize life under repeated impact and compression cycles from a vehicle. A batch of flexors, for converting vertical compression into horizontal extension, was fabricated and calibrated with force transducers and strain instruments to ensure proper specifications. A uniform subscale piezo-ceramic stack prototype was fabricated and assembled to prevent stress concentrations under buckling loads. Preliminary field testing at subscale was performed to collect data for power and energy. Work has started for permitting with the City of San Jose.
The project develops, designs, and installs a multitude of pavement-embedded devices to demonstrate energy harvesting from overpassing motor vehicles on the road in smart pavement covering 36 feet x 6 feet. The system consists of materials that exhibit the piezoelectric effect, generating an electric charge.
This project is expected to displace a fraction of grid electricity with reduced rates. Retrofitting 1% of useable roadways (about 10% of total California roads) could service about 70,000 homes during peak traffic hours and abou
Environmental & Public Health
By retrofitting 1% of useable roadways with piezoelectric devices, the environmental benefits will be significant, with the potential of reducing about 210 kilotons of CO2 emissions and displacing 250 million gallons of fresh wat