Active Phase Control for Maximum Power Point Tracking of a Linear Wave Generator

Park, Joon Sung; Gu, Bon-Gwan; Kim, Jeong Rok; Cho, Il-Hyoung; Jeong, Ilsu; Lee, Ju

doi:10.1109/tpel.2016.2625843

Cited by 41 publications

(33 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

“…It was concluded that submerged point absorbers can perform better in modes of motion other than heave, and that the natural frequency of a submerged point absorber is much lower to the one of a floating one due to the lack of hydrostatic stiffness. Park, Gu, Kim, Cho, Jeong and Lee [41] implemented the maximum power point tracking algorithm to predict the response of a point absorber coupled with a linear generator and to conduct phase control in order to increase the captured power by insuring the wave excitation force and the buoy's velocity are in phase. The simulations proved that the control algorithm can predict the response well and can increase the captured power.…”

Section: Theoretical Developmentmentioning

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%

See 2 more Smart Citations

Point Absorber Wave Energy Harvesters: A Review of Recent Developments

2018

View full text Add to dashboard Cite

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.

show abstract

Section: Point Absorbers Focusmentioning

confidence: 99%

Section: Theoretical Developmentmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Point Absorber Wave Energy Harvesters: A Review of Recent Developments

2018

View full text Add to dashboard Cite

show abstract

“…Park et al [7] proposed an phase L. Li, Z. M. Yuan (corresponding author), and Y. Gao, are with Department of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, (e-mail: liang.li@strath.ac.uk; zhiming.yuan@strath.ac.uk; yan.gao@strath.ac.uk ).…”

Section: Introductionmentioning

confidence: 99%

“…Zou et al [6] investigated constrained and unconstrained optimal control of a heaving point-absorber. Park et al [7] proposed an phase control by estimating the wave period using velocity and acceleration information.…”

Section: Introductionmentioning

confidence: 99%

Wave Force Prediction Effect on the Energy Absorption of a Wave Energy Converter With Real-Time Control

Yuan

Gao

et al. 2019

IEEE Trans. Sustain. Energy

View full text Add to dashboard Cite

Liang Li et al.: Wave force prediction effect on the energy absorption of a wave energy converter with real-time control Abstract-Real-time control has been widely adopted to enlarge the energy extraction of a wave energy converter (WEC). In order to implement a real-time control, it is necessary to predict the wave excitation forces in the close future. In many previous studies, the wave forces over the prediction horizon were assumed to be already known, while the wave force prediction effect has been hardly examined. In this paper, we investigate the effect of wave force prediction on the energy absorption of a heaving point-absorber WEC with real-time latching control. The real-time control strategy is based on the combination of optimal command theory and first order-one variable grey model GM(1,1). It is shown that a long prediction horizon is beneficial to the energy absorption whereas the prediction deviation reduces extracting efficiency of the WEC. Further analysis indicates that deviation of wave force amplitude has little influence on the WEC performance. It is the phase deviation that leads to energy loss. Since the prediction deviation accumulates over the horizon, a moderate horizon is thus recommended.Index Terms-real-time control, wave energy converter, energy absorption, renewable energy, wave force prediction I. IntroductionT is expected that the global demand for energy will climb up to 25 percent by 2040 and the world is pursuing economic and renewable energy sources to keep up with this considerable demand growth [1]. Among various of ocean energy resources, sea waves take the advantage of high power density and all-day availability. To extract energy from ocean waves, WECs with various operation mechanisms have been developed. Li et al. [2] showed the power output of an oscillating-body WEC installed on a spar-type floating wind turbine. Boren et al. [3] presented a testing of a scaled vertical axis pendulum WEC. He et al. [4] utilized a floater breakwater to harvest energy from the waves. Experimental study of the concept was performed.Control action is introduced to the WEC to enlarge the energy absorption and broaden the bandwidth. Babarit et al. [5] studied how the declutching control influenced the energy absorption of a WEC in regular and irregular waves. Zou et al.[6] investigated constrained and unconstrained optimal control of a heaving point-absorber. Park et al. [7] proposed an phase L. Li, Z. M. Yuan (corresponding author), and Y. Gao, are with Department of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, (e-mail: liang.li@strath.ac.uk; zhiming.yuan@strath.ac.uk; yan.gao@strath.ac.uk ).control by estimating the wave period using velocity and acceleration information.The latching control was first proposed by Budal and Falnes [8]. They found that one condition for maximizing energy absorption was to keep the velocity in phase with the wave excitation force. Therefore, the latching control is a kind of phase control. Hoskin and Nichols [9] used op...

show abstract

Model predictive control of direct‐drive wave power generation system connected to DC microgrid through DC cable

Adaryani

Taher

Guerrero

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Wave energy is a renewable energy with a high density. There are different types of wave power generation systems (WPGSs), including Archimedes wave swing (AWS) coupled to a linear permanent magnet synchronous generator. This study proposes a model predictive control (MPC) for AWS‐based WPGS. The predictive current controller is implemented in a generator‐side converter as a substation for proportional integral (PI) controllers with pulse‐width modulation (PWM). Also, a supercapacitor energy storage system with bidirectional DC/DC converter is proposed to maintain DC link voltage stability. A DC/DC converter is used to keep DC microgrid bus voltage at the desired value. The effectiveness of the proposed MPC method is tested at various operating conditions and compared with conventional PI controllers with PWM in the MATLAB/SIMULINK environment.

show abstract

Active Phase Control for Maximum Power Point Tracking of a Linear Wave Generator

Cited by 41 publications

References 15 publications

Point Absorber Wave Energy Harvesters: A Review of Recent Developments

Point Absorber Wave Energy Harvesters: A Review of Recent Developments

Wave Force Prediction Effect on the Energy Absorption of a Wave Energy Converter With Real-Time Control

Model predictive control of direct‐drive wave power generation system connected to DC microgrid through DC cable

Contact Info

Product

Resources

About