Investigation into linear generators with integrated magnetic gear for wave energy power take off

McGilton, Ben; Almoraya, Ahmed A.; Raihan, Raihan; Crozier, Richard; Baker, Nick; Mueller, Markus

doi:10.1049/joe.2018.9370

Cited by 7 publications

(3 citation statements)

References 13 publications

(16 reference statements)

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“…The linear generator can be straightforwardly joined to a vertical chamber, which is regularly utilized in the oscillating systems [22]. In [23], WEC PTO is based on a drive train technology by using linear Vernier and the experiment is carried out using a direct drive machine with 3-dimensional finite element technique. There is an alternative solution that joins two drive train technologies such as the linear Vernier hybrid permanent magnet machine coupled with a magnetic gear.…”

Section: Power Conversion Of Howwementioning

confidence: 99%

A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy

et al. 2023

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Renewable energy resources such as offshore wind and wave energy are environmentally friendly and omnipresent. A hybrid offshore wind-wave energy system produces a more sustainable form of energy that is not only eco-friendly but also economical and efficient as compared to use of individual resources. The objective of this paper is to give a detailed review of co-generation technologies for hybrid offshore wind and wave energy. The proposed area of this review paper is based on the power conversions techniques, response coupling, control schemes for co-generation and complimentary generation, and colocation and integrated conversion systems. This paper aims to offer a systematic review to cover recent research and development of novel hybrid offshore wind-wave energy (HOWWE) systems. The current hybrid wind-wave energy structures lack efficiency due to their design and AC-DC-AC power conversion that need to be improved by applying an advanced control strategy. Thus, using different power conversion techniques and control system methodologies, the HOWWE structure can be improved and will be transferrable to the other hybrid models such as hybrid solar and wind energy. The state-of-the-art HOWWE systems are reviewed. Critical analysis of each method is performed to evaluate the best possible combination for development of a HOWWE system.

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Section: Power Conversion Of Howwementioning

confidence: 99%

A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy

et al. 2023

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“…In addition, in order to adapt the ocean environment of D-DWEC system, refs. [74,75] have studied two types of linear generators with integrated magnetic gear respectively, and the purpose is to have simple structure, simple processing, high reliability and low cost.…”

Section: Linear Magnetic Gearmentioning

confidence: 99%

Direct‐Drive wave energy conversion with linear generator: A review of research status and challenges

Zhang

Chen

2022

IET Renewable Power Gen

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Ocean wave energy is sustainable and renewable energy, wave energy conversion (WEC) effectively solves the disadvantage of traditional power system with fossil energy. WEC system is the power generation process that converts wave kinetic energy of undulation and swing into electric energy, and direct-drive WEC system (D-DWEC) converts wave energy into electric power directly by linear generator to improve the efficiency. At present, the research of WEC system has the characteristic of interdisciplinary, multi-system integration, engineering application, and commercial operation. This paper summarizes the types, principle, and classification of WEC system, mainly focusing on the aspects of the kinds and characteristics of linear generators used in D-DWEC system, power post-processing, and power control methods. At the end of the paper, giving the development trend and challenges of D-DWEC technology, the research of ocean complementary energy generation platform with offshore wind, solar and ocean wave energy is analysed. It shows that the platform has advantages owing to stable power output, efficient utilization, ocean saving-space, and power generation cost reduction.

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“…An efficient strategy to extract wave energy from oceans is adopting direct-drive linear generators, in which the oscillatory motion of waves can be converted into electrical power without any intermediate equipment. The importance of linear structures in extracting wave energy cannot be denied owing to being less complicated, less bulky, and more efficient compared to conventional rotational generators [55,56]. Various kinds of linear generators have been commercialized and widely used in wave energy conversion systems.…”

Section: Linear Generatorsmentioning

confidence: 99%

Linear Permanent Magnet Vernier Generators for Wave Energy Applications: Analysis, Challenges, and Opportunities

et al. 2022

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Harvesting energy from waves as a substantial resource of renewable energy has attracted much attention in recent years. Linear permanent magnet vernier generators (LPMVGs) have been widely adopted in wave energy applications to extract clean energy from oceans. Linear PM vernier machines perform based on the magnetic gearing effect, allowing them to offer high power/force density at low speeds. The outstanding feature of providing high power capability makes linear vernier generators more advantageous compared to linear PM synchronous counterparts used in wave energy conversion systems. Nevertheless, they inherently suffer from a poor power factor arising from their considerable leakage flux. Various structures and methods have been introduced to enhance their performance and improve their low power factor. In this work, a comparative study of different structures, distinguishable concepts, and operation principles of linear PM vernier machines is presented. Furthermore, recent advancements and innovative improvements have been investigated. They are categorized and evaluated to provide a comprehensive insight into the exploitation of linear vernier generators in wave energy extracting systems. Finally, some significant structures of linear PM vernier generators are modeled using two-dimensional finite element analysis (2D-FEA) to compare their electromagnetic characteristics and survey their performance.

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Investigation into linear generators with integrated magnetic gear for wave energy power take off

Cited by 7 publications

References 13 publications

A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy

A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy

Direct‐Drive wave energy conversion with linear generator: A review of research status and challenges

Linear Permanent Magnet Vernier Generators for Wave Energy Applications: Analysis, Challenges, and Opportunities

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