Author
Franck Scuiller
Other affiliations: Naval Academy Research Institute, École Navale
Bio: Franck Scuiller is an academic researcher from United States Naval Academy. The author has contributed to research in topics: Torque & Stator. The author has an hindex of 17, co-authored 63 publications receiving 1058 citations. Previous affiliations of Franck Scuiller include Naval Academy Research Institute & École Navale.
Papers
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TL;DR: In this article, an overview and the state-of-the-art of energy storage technologies for marine current energy applications are presented, and the comparison shows that high-energy batteries like sodium-sulphur battery and flow battery are favorable for smoothing the long-period power fluctuation due to the tide phenomenon while supercapacitor and flywheel are more suitable for eliminating short-term power disturbances due to swell or turbulence phenomena.
Abstract: Increasing concerns about the depletion of fossil resources and the issue of environment lead to a global need for producing more clean energy from renewable sources. Ocean is appreciated as a vast source of renewable energies. Considering marine renewable energies, it can be noticed that significant electrical power can be extracted from marine tidal currents. However, the power harnessed from marine tidal currents is highly fluctuant due to the swell effect and the periodicity of the tidal phenomenon. To improve the power quality and make the marine generation system more reliable, energy storage systems can play a crucial role. In this paper, an overview and the state of art of energy storage technologies are presented. Characteristics of various energy storage technologies are analyzed and compared for this particular application. The comparison shows that high-energy batteries like sodium-sulphur battery and flow battery are favorable for smoothing the long-period power fluctuation due to the tide phenomenon while supercapacitor and flywheel are more suitable for eliminating short-period power disturbances due to swell or turbulence phenomena. This means that hybrid storage technologies are needed for achieving optimal results in tidal marine current energy applications.
216 citations
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TL;DR: In this paper, up-to-date information on large tidal turbine projects over 500kW is presented, with the newest achievements of these large tidal current turbine technologies with their developing histories.
Abstract: Increasing concerns about environmental issues and depletion of fossil resources lead to a global need for producing more clean energy from renewable sources. For coastal areas or some remote islands, marine tidal current energy is a promising renewable power source due to its high predictability. During the last decades, prototypes of various horizontal and vertical axis marine current turbines (MCT) have been developed around the world. Although reviews on MCTs can be found in some state-of-the-art research papers in the last few years, many of the reported MCT projects were only at the planning/design stage when the papers were written. In fact, some projects do not have any further developments during the several years after their first reporting; and others have already upgraded their original designs and adopted up-scaled versions. In this paper, up-to-date information on large tidal turbine projects over 500 kW is focused. The newest achievements of these large tidal current turbine technologies with their developing histories are presented. These technologies represent the industrial solutions for several pre-commercial MCT farm projects in the coming years. New developments in floating MCT technologies are also included. This paper provides a useful background for researchers in the tidal current energy domain and allows them to know the newest developments in large MCT projects around world.
190 citations
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TL;DR: In this article, a modified tip speed ratio maximum power point tracking (MPPT) algorithm with filter strategy is proposed in generator-side control to mitigate the fluctuation of generator power.
Abstract: Variations of marine current speed may lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During a short-time period, swell effect is the main cause for the current speed variations. The conventional tip speed ratio maximum power point tracking (MPPT) algorithm will require the MCT to accelerate or to decelerate frequently under swell effect, which can cause severe fluctuations in the generator power. This paper focuses on power smoothing control of the grid-connected MCT system. In the first step, a modified MPPT algorithm with filter strategy is proposed in generator-side control to mitigate the fluctuation of generator power. In the second step, a supercapacitor (SC) energy storage system (ESS) is added to compensate the residual power fluctuations. Simulations of a 1.5-MW direct-driven grid-connected MCT system are carried out. The swell effect is calculated based on typical system location and sea state. Detailed control strategies and SC sizing are described. The results demonstrate that the association of the generator-side filter strategy with the SC ESS system achieves a smoothed power injected to the grid in case of swell disturbances.
107 citations
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TL;DR: In this paper, the authors investigated power control strategies for a fixed-pitch direct-drive marine current turbine (MCT) when the marine current speed exceeds the rated value corresponding to the MCT nominal power.
Abstract: This paper deals with power control strategies for a fixed-pitch direct-drive marine current turbine (MCT) when the marine current speed exceeds the rated value corresponding to the MCT nominal power. At overrated marine current speed, the MCT control strategy is supposed to be changed from maximum power point tracking (MPPT) stage to constant power stage. In this paper, flux-weakening strategy is investigated to realize appropriate power control strategies at high marine current speeds. During flux-weakening operations, the generator can be controlled to produce nominal or overnominal power for a specific speed range (constant power range). These two power control modes are compared, and the constant power range is calculated. The relationship between the expected constant power range and generator parameter requirements [stator inductance, permanent magnet (PM) flux, and nominal power coefficient] is analyzed. A Torque-based control with a robust feedback flux-weakening strategy is then carried out in the simulation. The proposed control strategies are tested in both high tidal speed and swell wave cases; the results validate the analysis and show the feasibility of the proposed control method.
67 citations
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05 Nov 2014TL;DR: In this paper, up-to-date information about large tidal turbine projects over 500 kW is focused The newest achievements of these large tidal current turbine technologies are presented These technologies represent the industrial solutions for several pre-commercial MCT farm projects in the coming years This paper provides a useful background for researchers in the marine turbine energy domain
Abstract: Owning to the predictability of tidal current resources, marine tidal current energy is considered to be a reliable and promising renewable power source for coastal areas or some remote islands During the last 10 years, various original horizontal axis and vertical axis marine current turbines (MCT) have been developed around the world Although various projects have been reported in the state-of-the-art research papers in recent years, many of these projects were only at the design stage when the papers were published In fact, some projects do not have any further developments during the several years after the first reporting In this paper, up-to-date information about large tidal turbine projects over 500 kW is focused The newest achievements of these large tidal current turbine technologies are presented These technologies represent the industrial solutions for several pre-commercial MCT farm projects in the coming years This paper provides a useful background for researchers in the marine turbine energy domain
55 citations
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28,685 citations
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TL;DR: An attempt is made to provide a brief review of the current state of the art in the area of variable-speed drives, addressing the reasons for potential use of multiphase rather than three-phase drives and the available approaches to multiphases machine designs.
Abstract: Although the concept of variable-speed drives, based on utilization of multiphase machines, dates back to the late 1960s, it was not until the mid- to late 1990s that multiphase drives became serious contenders for various applications. These include electric ship propulsion, locomotive traction, electric and hybrid electric vehicles, ldquomore-electricrdquo aircraft, and high-power industrial applications. As a consequence, there has been a substantial increase in the interest for such drive systems worldwide, resulting in a huge volume of work published during the last ten years. An attempt is made in this paper to provide a brief review of the current state of the art in the area. After addressing the reasons for potential use of multiphase rather than three-phase drives and the available approaches to multiphase machine designs, various control schemes are surveyed. This is followed by a discussion of the multiphase voltage source inverter control. Various possibilities for the use of additional degrees of freedom that exist in multiphase machines are further elaborated. Finally, multiphase machine applications in electric energy generation are addressed.
1,683 citations
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TL;DR: In this paper, the authors examined the existing literature in the analysis of life cycle costs of utility-scale electricity storage systems, providing an updated database for the cost elements (capital costs, operational and maintenance costs, and replacement costs).
Abstract: Large-scale deployment of intermittent renewable energy (namely wind energy and solar PV) may entail new challenges in power systems and more volatility in power prices in liberalized electricity markets. Energy storage can diminish this imbalance, relieving the grid congestion, and promoting distributed generation. The economic implications of grid-scale electrical energy storage technologies are however obscure for the experts, power grid operators, regulators, and power producers. A meticulous techno-economic or cost-benefit analysis of electricity storage systems requires consistent, updated cost data and a holistic cost analysis framework. To this end, this study critically examines the existing literature in the analysis of life cycle costs of utility-scale electricity storage systems, providing an updated database for the cost elements (capital costs, operational and maintenance costs, and replacement costs). Moreover, life cycle costs and levelized cost of electricity delivered by electrical energy storage is analyzed, employing Monte Carlo method to consider uncertainties. The examined energy storage technologies include pumped hydropower storage, compressed air energy storage (CAES), flywheel, electrochemical batteries (e.g. lead–acid, NaS, Li-ion, and Ni–Cd), flow batteries (e.g. vanadium-redox), superconducting magnetic energy storage, supercapacitors, and hydrogen energy storage (power to gas technologies). The results illustrate the economy of different storage systems for three main applications: bulk energy storage, T&D support services, and frequency regulation.
1,279 citations
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TL;DR: In this article, the authors provide a detailed analysis of real life application and performance of different energy storage technologies, and highlight some of the challenges hindering the commercial deployment of energy storage technology.
1,106 citations
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TL;DR: In this paper, the authors comprehensively review technologies of ESSs, its classifications, characteristics, constructions, electricity conversion, and evaluation processes with advantages and disadvantages for EV applications.
Abstract: The electric vehicle (EV) technology addresses the issue of the reduction of carbon and greenhouse gas emissions. The concept of EVs focuses on the utilization of alternative energy resources. However, EV systems currently face challenges in energy storage systems (ESSs) with regard to their safety, size, cost, and overall management issues. In addition, hybridization of ESSs with advanced power electronic technologies has a significant influence on optimal power utilization to lead advanced EV technologies. This paper comprehensively reviews technologies of ESSs, its classifications, characteristics, constructions, electricity conversion, and evaluation processes with advantages and disadvantages for EV applications. Moreover, this paper discusses various classifications of ESS according to their energy formations, composition materials, and techniques on average power delivery over its capacity and overall efficiencies exhibited within their life expectancies. The rigorous review indicates that existing technologies for ESS can be used for EVs, but the optimum use of ESSs for efficient EV energy storage applications has not yet been achieved. This review highlights many factors, challenges, and problems for sustainable development of ESS technologies in next-generation EV applications. Thus, this review will widen the effort toward the development of economic and efficient ESSs with a longer lifetime for future EV uses.
614 citations