A Novel Single-Phase Tubular Permanent Magnet Linear Generator

Chen, Hao; Zhao, Shuyan; Wang, Haiying; Nie, Rui

doi:10.1109/tasc.2020.2976948

Cited by 10 publications

(10 citation statements)

References 14 publications

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“…These generators can significantly reduce system losses, thus increasing the efficiency of the entire system. 36 Among these generators, the LPMG has a higher energy density than others. The other important aspects of this generator are related to the longevity of the magnets and its easy maintenance.…”

Section: Structurementioning

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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Section: Structurementioning

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 direct-drive linear conversion can be used in wave-activated body (WAB) technology for wave energy conversion purposes [10] [11]. Therefore, the equipment based on this technical principle, especially point absorption equipment [12], may be developed as a portable peak power generation system [13]. The buoy rises and falls according to the movement of the waves to drive the permanent magnet linear generator (PMLG) [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Refine design parameters for permanent magnet shape modification of the direct-drive generator

Ghani

Ibrahim

Nor

2022

IJPEDS

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The high cost associated with operation has promoted the progress of wave energy conversion and has higher power output and larger size. However, many countries are bordered by the sea, and the possible area for using wave energy is very small which can generate peak power generation systems with a power output of less than 100 W. The purpose of this article is to introduce the refined parameters of new design of the permanent magnet shape of with tubular longitudinal direct-drive generator. Three designs proposed, which different shapes of permanent magnets with same topology. The parameter optimization process was analysed using finite element analysis to determine the best main parameters of the design, namely the length of the stator length to translation ratio (𝐿𝑠/𝐿𝑟), pitch ratio (𝜏𝑚𝑟/𝜏𝑝.), and split ratio (𝑅𝑚/𝑅𝑒). To evaluate design performance, electrical losses from the proposed design were also evaluated. The optimization results show these designs generator can produce 100 W of peak level output power with higher efficiency at rated current and optimal load.

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“…Due to their enhanced dynamics compared with the rotary machines in specific applications as mentioned earlier, linear motors were given great concern from the designers to fulfill specific needs [20][21][22][23][24][25][26][27][28][29]. For example, in [20], the design of a transverse-flux linear tubular machine type was presented to harvest a higher force density; the finite element method (FEM) was utilized for this purpose.…”

Section: Introductionmentioning

confidence: 99%

“…In [24], the authors utilized the FEM method to optimally design a homopolar linear tubular motor via analyzing the magnetic motor circuit and its relevant magnetic behaviors. In [25], a linear tubular PM synchronous generator was designed and tested using a 3D FEM analysis.…”

Section: Introductionmentioning

confidence: 99%

Design and Modeling of a Robust Sensorless Control System for a Linear Permanent Magnet Synchronous Motor

et al. 2021

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The paper is concerned with designing an effective controller for a linear tubular homopolar (LT-H) motor type. The construction and operation of the LT-H motor are first described in detail. Then, the motor model is represented in the direct-quadrature (d-q) axes in order to facilitate the design of the control loops. The designed control system consists of two main loops: the current control loop and velocity adaptation loop. The determination of the regulator’s gains is accomplished through deriving and analyzing the transfer functions of the loops. To enhance the system’s robustness, a robust variable estimator is designed to observe the velocity and stator resistance. Different performance evaluation tests are performed using MATLAB/Simulink software to validate the controller’s robustness for variable-speed operation and load force changes as well. The obtained results reveal the appropriate dynamics of the motor thanks to the well-designed control system.

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A Novel Single-Phase Tubular Permanent Magnet Linear Generator

Cited by 10 publications

References 14 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

Refine design parameters for permanent magnet shape modification of the direct-drive generator

Design and Modeling of a Robust Sensorless Control System for a Linear Permanent Magnet Synchronous Motor

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