Control Strategy of an Impulse Turbine for an Oscillating Water Column-Wave Energy Converter in Time-Domain Using Lyapunov Stability Method

Song, Seung Kwan; Park, Jin Bae

doi:10.3390/app6100281

Cited by 15 publications

(13 citation statements)

References 43 publications

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“…An alternative to ocean wave power generation technology that is more developed is the oscillating water column technique (Song and Park, 2016;Sheng and Lewis, 2016). The process of generating electric power with this technology goes through 2 stages of the process.…”

Section: Ocean Wave Energy Utilizationmentioning

confidence: 99%

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

Satriawan

Liliasari²,

Setiawan³

et al. 2021

JPF

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The lack of technological innovation in the utilization of ocean wave energy as a renewable energy source is caused by a lack of public knowledge about this matter. Therefore, it needs to be introduced early, especially to pre-service teachers through innovative and fun learning. The aim of this study was to identify the responses of pre-service physics teachers about the learning program to introduce the concept of utilizing ocean wave energy. The research subjects were 31 sixth semester students who are taking environmental physics lectures in the physics education study program at one of the teachers' university in West Nusa Tenggara Province for the 2019/2020 academic year. The sample was taken by using purposive sampling technique. Data collection was carried out by means of observation, interview, and questionnaire techniques. All data collected were then analyzed simultaneously descriptively. The findings of this study showed that almost 90% pre-service physics teacher students agreed that the learning program had a positive impact on increasing interest, motivation, critical thinking skills, and creative thinking skills, and made them easier to solve problems and grow solid cooperation. Therefore, it can be concluded that pre-service physics teacher students agree to the use of semi-assisted project-based learning programs with contextual problems.

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Section: Ocean Wave Energy Utilizationmentioning

confidence: 99%

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

Satriawan

Liliasari²,

Setiawan³

et al. 2021

JPF

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“…In 2015 and 2016, Song and Park analyzed the parameters that optimize the operation of an OWC system composed by a fixed chamber, an impulse turbine and an ideal direct current generator, focusing on two control strategies in the time domain and under an irregular wave environment. Instant tracking control of the maximum turbine efficiency and constant control of the angular velocity of the turbine rotor were investigated [64,65].…”

Section: Owc Wave-to-wire Literature Reviewmentioning

confidence: 99%

Wave-to-Wire Model of an Oscillating-Water-Column Wave Energy Converter and Its Application to Mediterranean Energy Hot-Spots

et al. 2020

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Oscillating water column (OWC) systems are among the most credited solutions for an effective conversion of the notable energy potential conveyed by sea waves. Despite a renewed interest, however, they are often still at a demonstration phase and additional research is required to reach industrial maturity. Within this framework, this study provides a wave-to-wire model for OWC systems based on an impulse air turbine. The model performs a comprehensive simulation of the system to estimate the attendant electric energy production for a specific sea state, based on analytical models of the primary (fixed chamber) and secondary (air turbine) converters coupled with the tertiary converter (electric generator). A rigid piston model is proposed to solve the hydrodynamics, thermodynamics, and hydrodynamics of the chamber, in a coupled fashion with the impulse turbine aerodynamics. This is solved with a novel method by considering the cascades as sets of blades, each one consisting of a finite number of airfoils stacked in the radial direction. The model was applied for two Mediterranean sites located in Tuscany and Sardinia (Italy), which were selected to define the optimal geometry of the turbine for a specified chamber. For each system, the developed analytical wave-to-wire model was applied to calculate the performance parameters and the annual energy production in environmental conditions typical of the Mediterranean Sea. The selected impulse turbines are able to convert 13.69 and 39.36 MWh/year, with an efficiency of 4.95% and 4.76%, respectively, thus proving the interesting prospects of the technology.

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“…The first one, authored by S. Song and J. Park, presents a control strategy for an impulse turbine for an oscillating water column-wave energy converter [13]. Stability analysis has been performed based on the Lyapunov method.…”

Section: Advanced Grid-connected Renewablesmentioning

confidence: 99%

Special Issue on Advancing Grid-Connected Renewable Generation Systems

Blaabjerg

Yang

2017

Applied Sciences

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Control Strategy of an Impulse Turbine for an Oscillating Water Column-Wave Energy Converter in Time-Domain Using Lyapunov Stability Method

Cited by 15 publications

References 43 publications

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

Wave-to-Wire Model of an Oscillating-Water-Column Wave Energy Converter and Its Application to Mediterranean Energy Hot-Spots

Special Issue on Advancing Grid-Connected Renewable Generation Systems

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