A Novel Segmented Structure and Control Method for a Permanent-Magnet Linear Generator to Broaden the Range of Efficient Energy Capture

Qiu, Shuheng; Wang, Haifeng

doi:10.3390/jmse7040101

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…Most papers focus on the improvement of the electrical power generation from OWE in various ways. The optimal electrical energy extraction from wave energy is investigated using a dual coaxial-cylinder system, which operates with a permanent magnet linear generator (Son et al, 2016). A new dual-port linear electrical generator (DPLEG) is capable of transferring electrical power to an adequate voltage even at zero vertical velocity of the oceanic wave (Farrok et al, 2020).…”

Section: Application Of Linear Generator In Wecmentioning

confidence: 99%

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Design and performance analysis of wave linear generator with parallel mechanism

Yao

Wang

et al. 2021

Mech. Sci.

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Abstract. Considering the irregularity of wave motion, a wave energy converter (WEC) based on 6-UCU parallel mechanism has been investigated. A buoy connected to moving platform is used to harvest wave energy. Each chain is equipped with the linear generator of the same structure, which can convert the absorbed wave energy into electrical energy. Based on the inverse kinematics analysis of parallel mechanism, the position of the parallel mechanism is solved by using the space closed-loop vector method; the relative motion of stator and translator is obtained. Through electromagnetic numerical simulations, the influences of linear generator parameters such as magnetization mode, air gap, and yoke shape on electromagnetic performance were evaluated. Numerical results show axial magnetization and Halbach magnet array can increase magnetic flux intensity more than radial mode. Furthermore, the rule of electromagnetic resistance is discussed with the change of the speed amplitude and the angle frequency. For a case, dynamic differential equation of the whole system is established. The conversion rate of wave energy is derived.

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Section: Application Of Linear Generator In Wecmentioning

confidence: 99%

“…A highpower density linear generator is proposed in Farrok and Is-lam (2018), where the armature windings are placed in the translator. A segmented permanent-magnet linear generator structure was presented, which expands wave energy capture frequency bandwidth (Qiu and Wang, 2019).…”

Section: Application Of Linear Generator In Wecmentioning

confidence: 99%

Design and performance analysis of wave linear generator with parallel mechanism

Yao

Wang

et al. 2021

Mech. Sci.

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show abstract

“…Dawoong coupling dynamics between linear generator structure and fluid [6]. Qiu designed the number of turns and wire diameter of the primary middle winding of linear generator in sections [7]. Selim Molla et al optimized the winding mode of the copper coil inside the linear generator based on ANSYS/Maxwell software [8].…”

Section: Introductionmentioning

confidence: 99%

Research on Energy-Capture Characteristics of a Direct-Drive Wave-Energy Converter Based on Parallel Mechanism

Yao

Wang

et al. 2022

Energies

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Aiming at the capture and conversion of multidirection wave energy, a multifreedom direct-drive wave-energy converter (WEC) based on a parallel mechanism is studied. The dynamic model of WEC was conducted based on force analysis and hydrodynamic theory, and the inverse kinematic solutions of each branch chain of the mechanism were obtained following the space vector method. Furthermore, the kinetics response of the linear generator branch chain was obtained. Moreover, the influence on the capture efficiency of the device's geometric structure scale was investigated under different sea conditions. To evaluate the performance of the WEC, a linear generator model was simulated and analyzed by COMSOL Multiphysics. A laboratory prototype was manufactured. The test results indicated that the multifreedom device can achieve better power conversion performance than traditional single degree of freedom (DOF) devices. This study provides ideas for the design and development of large multi-DOF wave-energy-conversion devices.

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“…This paper provides an overview of the modeling approach and its application in the design of a 10 kW proto-type wave energy conversion system tested on the open ocean in the fall of 2008 [1]. This paper proposes a segmented permanent magnet linear generator structure specially designed for wave energy converters [2]. In this paper, combined with the splicing characteristics of GRC materials, the steel structure + GRC modular assembly process is adopted to solve the construction scheme of the entire tower group system safely, economically, and efficiently [3].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and Structural Parameter Optimization Method of Linear Energy-Gathering Cutting Device for Towering Steel Structures Based on Computational Intelligence

Zhou

2022

Wireless Communications and Mobile Computing

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In the process of urban expansion, due to the advantages of high strength and light weight of steel frame structure, it has replaced concrete structure, and the construction technology of towering steel structure has been paid attention to by the construction industry. With the passage of time, steel structure also needs to be removed. In order to adapt to the efficient cutting of steel frame structures, this paper studies a new technology of linear energy-gathering cutting of towering steel structures based on computational intelligence methods. The research results of the article show the following: (1) The greater the penetration depth, the greater the setting of the cutter parameters. According to the experimental results, the designed towering steel structure cutter can smoothly cut more than 10 kinds of towering steel structure materials. It can be seen that the calculation results are basically accurate and the relative error of the calculation remains around 6%. (2) In the computational intelligent analysis method, the total stress is larger than that of the other two analysis methods, and the support stability force is slightly lower than the stress ratio of the direct analysis method, and the computational intelligent analysis method accounts for the largest axial force. (3) The cutting depth and slit width are different at different cutting speeds. When the cutting speed is 8, the cutting depth reaches the maximum value of 1.2300, and 90% of the experimental data errors can be controlled within 10%.

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A Novel Segmented Structure and Control Method for a Permanent-Magnet Linear Generator to Broaden the Range of Efficient Energy Capture

Cited by 3 publications

References 13 publications

Design and performance analysis of wave linear generator with parallel mechanism

Design and performance analysis of wave linear generator with parallel mechanism

Research on Energy-Capture Characteristics of a Direct-Drive Wave-Energy Converter Based on Parallel Mechanism

Mechanism and Structural Parameter Optimization Method of Linear Energy-Gathering Cutting Device for Towering Steel Structures Based on Computational Intelligence

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