A Wave Activated Electric Generator

Omholt, Thomas E.

doi:10.1109/oceans.1978.1151091

Cited by 10 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These include the energy lost through friction and other irreversible processes, and the energy extracted for the conversion. This definition allows the definition of an effective damping parameter β that covers both energy contributions: (17) where β f represents the damping due to irreversible losses (e.g., friction), and β c the effective damping associated with the converter (e.g., the turbine and electromagnetic inductor). This approximation is valid insofar as the resisting force experienced by the converter is proportional to the puck velocity, and provided that Eq.…”

Section: B Slingshot Resonancementioning

confidence: 99%

“…If β c β f , then β ≈ β c (see Appendix). In terms of the slingshot effect, the most convenient converter possible is clearly one that is driven by a linear inductance, as proposed by [17]. This scenario involves a permanent magnet moving inside a coil.…”

Section: Deriving βmentioning

confidence: 99%

“…It could be implemented in the present case by placing a coil in the tower and attaching a permanent magnet to the puck. The electrical power P produced by such a converter is then given by [17]…”

Section: Deriving βmentioning

confidence: 99%

See 2 more Smart Citations

Slingshot Resonance for Ocean Wave Energy Conversion

Arias

Heras

2019

Mar Syst Ocean Technol

View full text Add to dashboard Cite

The slingshot effect and its application to converting ocean wave energy is discussed. It is shown that, owing to the large inertia transported by ocean waves and their periodicity, the slingshot effect can result in the transmission of significant kinetic energy to a puck colliding elastically with a pusher plate driven by ocean wave motion. A simplified geometrical model is used to demonstrate that, despite the stochastic nature of the collisions (whereby collisions occur at random times in the wave cycle), head-on collisions occur more frequently, yielding a net average gain of energy. However, the most promising configuration for applying the slingshot effect to ocean-wave energy conversion is that which matches, through appropriate design, the travel time of the puck between collisions with the wave period. Then, only head-on collisions occur, resulting in a significant magnification of the puck kinetic energy. Further research will be required before this slingshot effect can be practically implemented for ocean-wave energy conversion.

show abstract

Section: B Slingshot Resonancementioning

confidence: 99%

Section: Deriving βmentioning

confidence: 99%

See 1 more Smart Citation

Slingshot Resonance for Ocean Wave Energy Conversion

Arias

Heras

2019

Mar Syst Ocean Technol

View full text Add to dashboard Cite

show abstract

“…The energy of the system is converted into electric power by means of a linear inductance generator, whose electric inductance provides a force opposing the direction of the velocity of the hydraulic piston. The power generated by within the linear inductance generator has been originally described by Omholt [10,2]. The amplitude of the opposing force depends on the number of turns of the coil N e , the magnetic field strength B e , the wire length of the coil l e , the total resistance of the electric load and the coil R e , as well as the velocity of the hydraulic piston ẋ.…”

Section: Linear Inductance Power Generatormentioning

confidence: 99%