Searched for: subject%3A%22misalignment%22
(1 - 20 of 20)
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van den Broek, M.J. (author)
In the current state of model-based wind farm flow control, the implementation of yaw-based wake steering based on steady-state models has demonstrated potential for improving wind farm power production. However, for realistic, time-varying wind directions, the dynamics of wake propagation may impact the effectiveness of wake redirection. This...
doctoral thesis 2024
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Çirak, Cansu (author)
The demand for wind energy has led to the need for larger offshore wind turbines, which require larger monopiles for support. Vibratory pile driving is a common technique for installing these monopiles, but current engineering models are designed for smaller diameter monopiles and may not be applicable to larger ones. Additionally, the vibratory...
master thesis 2023
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Zhu, G. (author), Dong, J. (author), Grazian, F. (author), Bauer, P. (author)
This article presents a parameter recognition-based impedance tuning method for the impedance mismatch caused by capacitance drift and coil misalignment in series-series-compensated wireless power transfer (WPT) systems. First, a parameter recognition method is proposed to identify the unknown parameters of the resonant circuits by only...
journal article 2023
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Ebrahimi, Amin (author), Hermans, M.J.M. (author)
Laser butt welding of thin metal sheets is a widely used fusion-based joining technique in industrial manufacturing. A comprehensive understanding of the complex transport phenomena during the welding process is essential for achieving high-quality welds. In the present work, high-fidelity numerical simulations are employed to investigate the...
journal article 2023
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Li, Z. (author), Liu, Haoyuan (author), Hicks, M.A. (author), Pisano, F. (author)
Offshore monopile foundations are exposed to misaligned wind and wave loadings, which are respectively dominated by (nearly) static and cyclic load components. While the response of these systems to unidirectional cyclic loading has been extensively investigated, only a few studies have been devoted to the realistic case of misaligned static...
journal article 2023
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Pahlavan, Saeideh (author), Shooshtari, M. (author), Jafarabadi Ashtiani, Shahin (author)
Wireless power is one of the new promising technologies for IoT applications. The use of arrays for power transfer to free-moving objects has revolutionized wireless power transmission (WPT) applications. Herein, we present an extendable platform for transmitting power to a moving object receiving power from an array. The transmitter (TX)...
journal article 2022
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Shi, W. (author), Dong, J. (author), Soeiro, Thiago B. (author), Riekerk, C. (author), Grazian, F. (author), Yu, G. (author), Bauer, P. (author)
Due to the urgent desire for a fast, convenient, and efficient battery charging technology for electric vehicle (EV) users, extensive research has been conducted into the design of high-power inductive power transfer (IPT) systems. However, there are few studies that formulate the design as a multiobjective optimization (MOO) research...
journal article 2022
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Sokooti, Hessam (author), Yousefi, Sahar (author), Elmahdy, Mohamed S. (author), Lelieveldt, B.P.F. (author), Staring, M. (author)
In this paper we propose a supervised method to predict registration misalignment using convolutional neural networks (CNNs). This task is casted to a classification problem with multiple classes of misalignment: 'correct' 0-3 mm, 'poor' 3-6 mm and 'wrong' over 6 mm. Rather than a direct prediction, we propose a hierarchical approach, where...
journal article 2021
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Ali Nawaz, Ali (author)
Though NanoSats are becoming increasingly capable of featuring active payloads, and acquiring inertial data at arcsec level precision; the payload operational duty-cycle largely remains limited by its data downlink capabilities. NanoSat laser communication terminal (LCT) promises 1 Gbps data downlink capabilities. However, LEO to ground free...
master thesis 2020
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Guo, Baocheng (author), Huang, Yunkai (author), Peng, Fei (author), Dong, J. (author), Li, Yongjian (author)
This paper proposes an analytical model for the prediction of air gap magnetic field distribution for axial flux permanent magnet (AFPM) machine with various types of misalignments. The AFPM machine geometry is first transformed to a polar representation. Consequently, the subdomain model based on current sheet technique is developed. Then...
journal article 2020
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Vermeer, W.W.M. (author), Bandyopadhyay, S. (author), Bauer, P. (author)
Since the power transfer efficiency in inductive power transfer (IPT) systems is directly related to the coupling of the transformer, coil misalignment can drastically decrease the efficiency. In this paper a misalignment tolerant control scheme is proposed which tracks the maximum power transfer efficiency point under misalignment. It does this...
conference paper 2020
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Verma, Amrit Shankar (author), Jiang, Zhiyu (author), Ren, Zhengru (author), Gao, Zhen (author), Vedvik, Nils Petter (author)
Most wind turbine blades are assembled piece-by-piece onto the hub of a monopile-type offshore wind turbine using jack-up crane vessels. Despite the stable foundation of the lifting cranes, the mating process exhibits substantial relative responses amidst blade root and hub. These relative motions are combined effects of wave-induced monopile...
journal article 2020
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Belo Gomes Brito, C. (author), Teuwen, Julie J.E. (author), Dransfeld, C.A. (author), Villegas, I.F. (author)
Research on ultrasonic welding of composites has focused mostly on studying parameters that are inputs for the process or material-related parameters, but almost no attention has been given on the effect of manufacturing tolerances. In this work, we investigated how an angle between adherends impacts the welding process and the weld quality....
journal article 2020
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Born, Lotte (author)
Since the introduction of Best Price Quality Ratio (BPQR) tendering, specific (non-financial) tender elements in the bid can also be decisive for winning the tender. These so-called qualitative aspects are therefore important means in the tender to distinguish a bid from competing bids. Although competition is believed to enhance a fair quality...
master thesis 2019
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Shi, W. (author), Dong, J. (author), Bandyopadhyay, S. (author), Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment...
conference paper 2019
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Bandyopadhyay, S. (author), Prasanth, V. (author), Dong, J. (author), Bauer, P. (author)
Inductive power transfer (IPT) is becoming increasingly popular in stationary electric vehicle (EV) charging systems. In this paper, the influence of the different IPT coupler geometries on the performance factors such as efficiency, power density, misalignment tolerance, and stray field is studied. Four different coupler topologies, namely...
journal article 2019
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Smeets, Martijn (author)
As part of the ESA mission to Jupiter and Ganymede carried out by the Jupiter Icy Moons Explorer (JUICE) spacecraft, the Ganymede Laser Altimeter (GALA) will determine the topography and detect Ganymede’s tidal degree-2 signal in order to investigate the existence of a subsurface ocean and constrain its thickness. To deliver successful...
master thesis 2017
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Ubbens, H.H. (author), Dwight, R.P. (author), Sciacchitano, A. (author), Timmer, W.A. (author)
Bobsleighs races nowadays are decided upon hundredths of a second. As the margins are that small the aerodynamics of a bobsleigh can play a significant role in a race outcome. This paper investigates the influence of the gap between the nose and the rear cowling of a two-man bobsleigh. The paper especially focusses on the misalignment between...
journal article 2016
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Goossens, S.J. (author)
The market share of wind energy is related to many factors, including politics, social acceptance and financial feasibility. In light of reducing the Levelised Energy Cost (LEC) generated from wind energy, power company Vattenfall is continuously looking for new ways of monitoring and improving wind turbine yield. Recent publications have shown...
master thesis 2015
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Prasanth, V. (author)
Wireless Power Transfer (WPT) is the process of transferring power from one circuit onto another without passing through any manmade conductive elements interconnecting them. Several schemes for wireless power transfer exist – Inductive, Capacitive, Laser, Microwave etc. Of these, Inductive Power Transfer (IPT) is the most popular and is being...
master thesis 2012
Searched for: subject%3A%22misalignment%22
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