A Spiral Translator Permanent Magnet Transverse Flux Linear Generator Used in Direct-Drive Wave Energy Converter

Chen, Minshuo; Huang, Lei; Hu, Minqiang; Hu, Bin-Bin; Ahmad, Ghulam

doi:10.1109/tmag.2021.3076134

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Energy conversion efficiency η s herein is defined as the product of engine efficiency η en and power generation efficiency η ge , which is expressed by Equation (2). Engine efficiency is expressed as the ratio of the gasoline heat generation rate to the generator input, which considers the engine loss (engine heat and friction losses) as expressed by Equation (3). The generation efficiency is the ratio of the output power to the battery to the generator input, which considers the generator loss (iron and copper losses) as expressed by Equation (4).…”

Section: Energy Flow Of Fpegmentioning

confidence: 99%

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Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

et al. 2021

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In a free-piston engine generator (FPEG), the power of the engine can be directly regenerated by linear generators without a crank. The mover motion of this system is interrelated with engine and power generation efficiencies due to the direct connection between the mover of the generator and the piston of the engine. The generator should be designed to improve the overall energy conversion efficiency. The dimensions and mass of the mover limit its operating stroke and drive frequency. Herein, we propose a method for designing linear generators and constructing FPEG systems, considering the mover operation to improve engine efficiency. We evaluated the effect of mover operation on the engine and generation efficiencies using thermal and electromagnetic field analysis software. The proposed design method improves the overall energy conversion efficiency compared with a generator that considers only the maximization of generation efficiency. Setting the mover operation for higher engine efficiency and designing a linear generator to realize the operation can effectively improve the energy conversion efficiency of FPEGs.

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Section: Energy Flow Of Fpegmentioning

confidence: 99%

“…Linear generators that directly convert energy without a linear motion conversion mechanism are used for ocean and vibration power generation [1][2][3][4][5]. The input energy of the systems has a random waveform with nonconstant cycles and amplitudes.…”

Section: Introductionmentioning

confidence: 99%

Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

et al. 2021

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“…Currently, most of the generators used for these converters are linear permanent magnet generators (LPMGs). 15 Various types of these generators include tubular [16][17][18] or flat, 19 air-cored 20,21 or iron-cored, 22,23 transverse [24][25][26][27] or longitudinal flux, 28 double-sided 29 or single-sided, which are used in numerous applications. Therefore, much research has been devoted to the analysis, design, and optimization of these types of generators.…”

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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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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Model-free predictive control of parameter variations in DDWEC-HESS-hydrogen system

Tan,

Huang,

Chang

et al. 2025

Journal of Energy Storage

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A Spiral Translator Permanent Magnet Transverse Flux Linear Generator Used in Direct-Drive Wave Energy Converter

Cited by 8 publications

References 20 publications

Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

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

Model-free predictive control of parameter variations in DDWEC-HESS-hydrogen system

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