Adaptive hydrokinetic energy harvesting system

摘要

An adaptive system for harvesting hydrokinetic energy from flowing fluid uses a hydrofoil-type vane in a flow-way and an electrical power generator to convert torque generated by the oscillating vane to electrical current. The generator may be electromagnetic or piezoelectric. The system includes a control module that measures the oscillation of the vane, the generated torque, or the characteristics of the generated current, and modifies the resistance of the vane or the conversion of the electrical current in response to changes therein. Some systems include a frame that can be anchored in a body of water. Some systems are portable and provide illumination. Some systems are adapted for use as hiking or camping gear and may be inserted into stream beds or used as walking sticks. Some systems are in-line devices. Some systems are adapted as fishing lures.

主权项

1. An adaptive hydrokinetic energy harvesting system, comprising:
a first blade having a first leading end, a first trailing end opposite said first leading end, and a first part of an electrical power generating means for generating electrical current from torque, said first part being affixed to said first trailing end; and a second blade having a hydrofoil cross-section, a second leading end, a second trailing end opposite said second leading end, and a second part of said electrical power generating means affixed to said second leading end, wherein said second leading end of said second blade is movably attached to said first trailing end of said first blade, said first and second blades being arranged such that turbulent fluid flow from said first leading end of the said first blade to said second trailing end of said second blade causes said second blade to oscillate relative to said first blade thereby generating torque, and said first and second parts of said electrical power generating means cooperating to convert the generated torque to electrical current.