Resonance control strategy for a slider crank WEC power take-off system

Sang, Yuanrui; Karayaka, H. Bora; Yan, Yanjun; Zhang, James Z.

doi:10.1109/oceans.2014.7003180

Cited by 16 publications

(5 citation statements)

References 15 publications

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“…The remainder of this literature review will focus on the recent developments and studies concerning the All the previous literature review and performance comparison papers focus on wave energy harvesting in general, while this paper will focus on only point absorbers as they offer many benefits as an offshore environment platform. This type of WECs has a low complexity compared to other designs, can harvest energy from different wave directions and offers high efficiency, reliability, and a range of control methods [1,35,37,38,40,41,[57][58][59]. And also, as shown below in Figure 4, the southern Australian coast is one of the most wave energetic places in the world, and these locations are offshore with high depth, rendering the oscillating point absorber ideal to harvest energy from such locations, as it is usually used to exploit the energy from the offshore energetic locations with high water depth [2].…”

Section: Point Absorbers Focusmentioning

confidence: 99%

“…A crank slider, similar to the conventional combustion engine mechanism was theoretically studied in [37,47]. The mechanism, showcased in Figure 19, was designed and simulated in both the frequency and time domains under the excitation of both regular and irregular waves.…”

Section: Linear To Rotary Mechanismsmentioning

confidence: 99%

“…This necessitates big devices with very large masses in order to coincide the device's natural frequency with the ocean waves frequency and achieve resonance with the incoming waves, which results in design, manufacturing, transport, implementation, mooring, and maintenance difficulties due to the massive volumes and masses.  Theoretical difficulties: Wave energy harvesting is very multidisciplinary containing boundary element methods of hydrodynamics [8,9,13,[16][17][18][19][20][21][22][23][24][25][26][27][28], finite element methods of fluid mechanics [29][30][31][32][33], mechanical to electrical energy transfer [34], power electronics [35,36], and control theories [37][38][39][40][41]. Hydrodynamics for example are theoretically intensive, containing complicated diffraction and radiation wave theories [2] and sometimes non-linear high order wave theories [32,42,43].…”

mentioning

confidence: 99%

“…This results in considerably intense modelling.  PTO mechanisms: There are plenty of PTO mechanisms in wave energy harvesters, the main ones being linear generators [27,35,36,44], power hydraulics [45], turbines [46], linear to rotary motion transmission mechanisms [7,37,47], etc. The seasonal variance presented earlier presents a real challenge for the PTOs, as they are usually designed to operate under consistent conditions.…”

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confidence: 99%

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Point Absorber Wave Energy Harvesters: A Review of Recent Developments

2018

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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.

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Section: Point Absorbers Focusmentioning

confidence: 99%

Section: Linear To Rotary Mechanismsmentioning

confidence: 99%

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Point Absorber Wave Energy Harvesters: A Review of Recent Developments

2018

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“…In the literature studies carried out so far, the position control of the crank-connecting rod mechanism is made by using the PID controller optimized with the Ziegler Nichols Method [1], the position control of the crank-connecting rod mechanism is carried out with the sliding mode controller and its dynamics are examined [2], proposed of a fuzzy mesh structure for the position control of the crank-connecting rod mechanism [3], the position control of the crank-connecting rod mechanism is made using PID fuzzy control [4], a genetic algorithm-based CTC system is proposed for the position control of the crankconnecting rod mechanism used in the ship propeller [5], the crankshaft using adaptive calculated torque technique -the position of the connecting rod mechanism is controlled [6], the output of the crank-connecting rod mechanism is connected to a pendulum, its control and dynamics are examined [7], the collective parameter approach is preferred, the dynamic behavior of the crank-connecting rod mechanism is modeled with a driving force applied in the crank-pin center, and compared in real time [8], optimum values of crank-connecting rod length were investigated for cutting multi-layered materials [9], an experienced self-adjusting PID control method was proposed for the position control of the crank-connecting mechanism [10], constant speed control to the crank-connecting rod mechanism is recommended for machine tools [11], the crank-connecting rod mechanism is used for the climbing part of the mast climbing robot [12], the crank-connecting rod is proposed as a part of the resonance control unit in the power output system [13], A selfadjusting control method based on generalized minimum variance control is proposed for the rotational speed control of the crank-connecting rod mechanism [14], crank-connecting rod is used in vibrating olive harvesters [15], crank-connecting rod is used in pressing [16], to design task space controllers for crankconnecting rod without using mechanism dynamics and linearization methods in which a new method is proposed [17] are available.…”

Section: Introductionmentioning

confidence: 99%

Krank Biyel Mekanizmasının Pozisyon Kontrolü

Aydın

2022

EJOSAT

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This paper presents the position control of the slider-crank mechanism in the simulation environment. The slider-crank mechanism was first 3D modeled in the Solidworks environment. This model was afterwards converted to xml format. The slider-crank mechanism's simulink blocks were made using the xml file from the Matlab model, which allowed the 3D model to be imported into Matlab. These Simulink blocks were used to implement the PID control approach for angle control of the model's input limb. In order to achieve this purpose, additional blocks required from the simulink have been added to other existing blocks. It has been determined that the mechanism's target reference point rotates 90 degrees in 0.01367 seconds. It was discovered that the error value was 0.03114. It is evident from the results that the mechanism's PID control method allows for quick position control with a very tiny margin of error. Solidworks is a program that may be used to create the final design of the slider-crank mechanism that will be created using this method. By deciding on the material that will be used to make the mechanism, it is simpler to achieve adequate control coefficients for practical applications when the same operations are repeated. This will free up time for additional study.

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