Vibration energy harvesting in automotive suspension system: A detailed review

Modelling and ride analysis of a hydraulic interconnected suspension based on the hydraulic energy regenerative shock absorbers

Even though ocean waves around the world are known to contain high and dense amounts of energy, wave energy harvesters are still not as mature as other forms of renewable energy harvesting devices, especially when it comes to commercialization, mass production, and grid integration, but with the recent studies and optimizations, the point absorber wave energy harvester might be a potential candidate to stand out as the best solution to harvest energy from highly energetic locations around the world’s oceans. This paper presents an extensive literature review on point absorber wave energy harvesters and covers their recent theoretical and experimental development. The paper focuses on three main parts: One-body point absorbers, two-body point absorbers, and power take-offs. This review showcases the high amount of work being done to push point absorbers towards technological maturity to eventually kick off commercialization and mass production. It should also provide a good background on the recent status of point absorber development for researchers in the field.

Point Absorber Wave Energy Harvesters: A Review of Recent Developments

The present invention is used as power for wave energy of the ocean, and relates to the use of the energy of the high-pressure sea water, the apparatus 10, which was generally converted to a water pressure of greater than greater than 800psi and preferably 100psi. Sea water of the high pressure generated by the device 10 may be transported through the pipe to shore for any suitable purpose. The device 10 includes a pump 13 operatively connected to the support to hang in the water body (1), the float 12, and the float (12). And the pump 13 comprises a piston 61 extending between the take entrance 47, the take-out chamber (49) and the take entrance 47 and the take-out chamber (49). The piston 61 includes a tube 63 having a flow passage 102 extending between the take entrance 47 and the take-out chamber (49). The piston 61 and the take-out chamber (49) are cooperating to form the expansion and the pumping chamber (100) to receive a contraction in accordance with the reciprocating motion of the piston. The piston 61 is operatively connected to the float (12) to be driven by upward movement of the float. The pump may be to process the water to pass by using the electrolytic process, to accept from a linear electric generator employed in the pump. Seawater, wave energy, buoyancy, pumps, water treatment

Wave Energy Conversion

Investigating algae for CO2 capture and accumulation and simultaneous production of biomass for biodiesel production.

A novel regenerative shock absorber with a speed doubling mechanism and its Monte Carlo simulation

This paper investigates a single degree of freedom oscillator in a cylindrical tube vibration energy harvester which is applicable in a low-frequency range. A duffing-type nonlinear dynamic differential equation of the oscillator was developed for the nonlinear analysis and solved by using the harmonic balance method in order to widen energy harvesting frequency bandwidth. The exploitation of nonlinear spring force interactions of the oscillator to enhance the generator’s performance is also presented in this paper. The dimensionless harvested power formula of the nonlinear mass-spring-damper system was derived, and a parameter study was conducted for the design optimization of the harvester. The main contribution of this paper is to establish a dimensionless performance analysis method of a nonlinear electromagnetic vibration energy harvester system and to disclose the effects of the parameters and nonlinearity of the system on the harvesting performance.

A Dimensionless Parameter Analysis of a Cylindrical Tube Electromagnetic Vibration Energy Harvester and Its Oscillator Nonlinearity Effect

Ocean wave energy conversion as one of the renewable clean energy sources is attracting the research interests of many people. This review introduces different types of power take-off (PTO) technology of wave energy converters. The novelty of this paper is to present advantages and disadvantages of the linear direct and indirect drive PTO devices for ocean wave energy conversion. The designs and optimizations of PTO systems of ocean wave energy converters have been studied from reviewing the recently published literature. The novel mechanical designs of the PTO systems have been compared and investigated in order to increase the energy harvesting efficiency.

Zhenwei Liu

Papers

A novel regenerative shock absorber with a speed doubling mechanism and its Monte Carlo simulation

A Dimensionless Parameter Analysis of a Cylindrical Tube Electromagnetic Vibration Energy Harvester and Its Oscillator Nonlinearity Effect

Survey of the mechanisms of power take-off (PTO) devices of wave energy converters

A study of a speed amplified linear generator for low-frequency wave energy conversion

A new concept of speed amplified nonlinear electromagnetic vibration energy harvester through fixed pulley wheel mechanisms and magnetic springs