Design of a 100 W mini permanent magnet linear generator for wave energy converter system

Wahyudie, Addy; Susilo, Tri; Jehangir, Syed S.

doi:10.1109/icrega.2018.8337630

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…ri q q 0 i a (34) In the above equations, R m is the magnet reluctance, R iv the iron vertical part reluctance, R ih the iron horizontal part reluctance, R g1 and R g2 the air-gap reluctances, R c the coils reluctance, R mi the magnet to iron reluctance, R mm the reluctance between two adjacent magnets and R q is the reluctance between two adjacent horizontal iron parts. Also, μ ri is the relative permeability of the iron, μ rc is the relative permeability of the copper and w q is the distance between two adjacent magnets.…”

Section: Modeling By Magnetic Equivalent Circuitmentioning

confidence: 99%

“…This proposed resonance circuit produces a higher level of current, which can increase the manufacturing cost 33 . The design method of the flat linear permanent magnet mini‐generator for the wave energy converter system has been presented in Wahyudie et al, 34 which includes analysis and experimental tests, and a maximum power of 100 W is obtained. In Oprea et al, 35 a four‐sided LPMG has been built on a test bench, which is suitable for wave energy converters.…”

Section: Introductionmentioning

confidence: 99%

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Design and optimization of air‐cored double‐sided linear permanent magnet generators for wave energy conversion

Niknafs

Shiri

Bagheri

2022

Energy Science & Engineering

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Recently, linear generators have been widely employed to convert oceanic wave energy into electricity. Among various linear generators, linear permanent magnet generators (LPMGs) have gained attention due to their special characteristics such as high power density and simple control structure. In this paper, flat double-sided LPMG is investigated and designed.Considering all effective design variables, a particle swarm optimization algorithm-based optimization method is employed to maximize efficiency and minimize weight. The optimization results show an increase in efficiency and a reduction in the weight of the generator. Finally, the design results are evaluated and validated using magnetic equivalent circuit and finite element analysis methods.

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Section: Modeling By Magnetic Equivalent Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and optimization of air‐cored double‐sided linear permanent magnet generators for wave energy conversion

Niknafs

Shiri

Bagheri

2022

Energy Science & Engineering

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“…The system mainly consisted of LPM generator and buoy components. The planar double-sided LPM structure provided power of about 300 W [17]. In order to increase the output power, the array of floating cylinders [18] and buoy shape [19] were proposed.…”

Section: Electric Generationmentioning

confidence: 99%

An empirical model for forecasting electric generation for nearshore energy potential in Thailand

Phaiboon¹,

Phokharatkul²

2022

J Appl Eng Science

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This paper presents electrical energy forecasting from near shore wave potential in the Gulf of Thailand using an empirical model. An electric generator was installed on the near shore to perform measurements and create an empirical model for predicting electric generation. In order to forecast the capacity of the electric generation from sea waves with sufficient electricity consumption, the household data in the Gulf of Thailand and the Andaman Sea were collected from the year 2012 - 2019 to forecast the increasing rate of the number of households in the five years period (2021-2025). Cost and payback period were analyzed in each location in order to invest the renewable energy generation.

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“…Compared to other renewable energies, wave energy has a larger energy density [2]. Some reports show that in terms of power density, an average of 2-3 kW/m 2 power can be harnessed from a wavefront compared to 1.366 kW/m 2 of the average global solar irradiance and 0.6 kW/m 2 from wind farms [3][4][5]. Ocean energy is also more concentrated, more predictable, and more persistent than other renewable resources; also, it is more frequent, as it is available all the time regardless of the weather and climate [3,4,6].…”

Section: Introductionmentioning

confidence: 99%

Performance of Linear Generator Designs for Direct Drive Wave Energy Converter under Unidirectional Long-Crested Random Waves

2021

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For generating electricity, direct-drive wave energy converters (WECs) with linear permanent magnet generators (LPMGs) have advantages in terms of efficiency, simplicity, and force-to-weight ratio over WEC with rotary generators. However, the converter’s work under approaching-real wave conditions should be investigated. This paper studies the performance of a pico-scale WEC with two different LPMGs under unidirectional long-crested random waves. Different significant wave heights (using data in the Southern Ocean of Yogyakarta, Indonesia) and peak frequencies are tested. The JONSWAP energy spectrum is used to extract the wave elevations, while the MSS toolbox in MATLAB Simulink is employed to solve the floater’s dynamic responses. Next, the translator movements are extracted and combined with the flux distribution from FEMM simulation and analytical calculation, and the output powers are obtained. An experiment is conducted to test the output under constant speed. The results show for both designs, different tested significant wave height values produce higher output powers than peak frequency variation, but there is no specific trend on them. Meanwhile, the peak frequency is inversely proportional to the output power. Elimination of the non-facing events results in increasing output power under both parameters’ variation, with higher significant wave height resulting in a bigger increase. The semi iron-cored LPMG produces lower power loss and higher efficiency.

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Design of a 100 W mini permanent magnet linear generator for wave energy converter system

Cited by 7 publications

References 11 publications

Design and optimization of air‐cored double‐sided linear permanent magnet generators for wave energy conversion

Design and optimization of air‐cored double‐sided linear permanent magnet generators for wave energy conversion

An empirical model for forecasting electric generation for nearshore energy potential in Thailand

Performance of Linear Generator Designs for Direct Drive Wave Energy Converter under Unidirectional Long-Crested Random Waves

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