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Wijermars, Ronald (author)An artificial retina can replace some of the functionality of the eye in people that have experienced partial or complete loss of vision. Loss of vision is associated with many negative effects in one’s life and can be a debilitating condition. Artificial retinas in the form of a chip thus offer the potential to greatly improve people’s lives....master thesis 2024
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Mooren, Noud (author), van Meer, Max (author), Witvoet, Gert (author), Oomen, T.A.E. (author)Actuators that require commutation algorithms, such as the switched reluctance motor (SRM) considered in this paper and employed in the coarse pointing assembly (CPA) for free-space optical communication, often have torque-ripple disturbances that are periodic in the commutation-angle domain that deteriorate the positioning performance. The...journal article 2024
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Marangalu, Milad Ghavipanjeh (author), Kurdkandi, Naser Vosoughi (author), Monfared, Kourosh Khalaj (author), Talebian, Iman (author), Neyshabouri, Yousef (author), Vahedi, H (author)Switched capacitor multilevel inverter topologies are attractive among industrial power electronics researchers due to their applicability in sustainable energy systems such as renewable energy source (RES) applications. In this paper, a new switched capacitor (SC)-based grid-tied seven-level inverter is proposed for renewable energy sources ...journal article 2024
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Hopf, Y.M. (author), Simoes dos Santos, D. (author), Ossenkoppele, Boudewine W. (author), Noothout, E.C. (author), Chang, Z.Y. (author), Chen, Chao (author), Vos, H.J. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)This article presents an application-specific integrated circuit (ASIC) for catheter-based 3-D ultrasound imaging probes. The pitch-matched design implements a comprehensive architecture with high-voltage (HV) transmitters, analog front ends, hybrid beamforming analog-To-digital converters (ADCs), and data transmission to the imaging system....journal article 2024
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Della Corte, S. (author), Kraaij, R.C. (author)We consider the context of molecular motors modelled by a diffusion process driven by the gradient of a weakly periodic potential that depends on an internal degree of freedom. The switch of the internal state, that can freely be interpreted as a molecular switch, is modelled as a Markov jump process that depends on the location of the motor....journal article 2024
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ten Wolde, M.A. (author), Farhadi Machekposhti, D. (author)Bistable mechanisms are prevalent across a broad spectrum of applications due to their ability to maintain two distinct stable states. Their energy consumption is predominantly confined to the process of state transitions, thereby enhancing their efficiency. However, the transition often requires two distinct digital inputs, implicating the...journal article 2024
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Moradvandi, A. (author), Abraham, E. (author), Goudjil, Abdelhak (author), De Schutter, B.H.K. (author), Lindeboom, R.E.F. (author)This paper focuses on the development of linear Switched Box–Jenkins (SBJ) models for approximating complex dynamical models of biological wastewater treatment processes. We discuss the adaptation of these processes to the SBJ framework, showing the model's generality and flexibility as a class of switched systems that can offer accurate...journal article 2024
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Deshmukh, R.S. (author), Bauer, P. (author), Vahedi, H (author)This article presents a detailed procedure for deriving the generalized average model (GAM) of a dual active bridge converter. The proposed model incorporates higher orders of harmonic components to increase accuracy. Moreover, the turn ratio of the high-frequency transformer (N_t) is considered for realistic modeling, which removes the...journal article 2024
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Zhao, W. (author), Ghafoor, S. (author), Lagerweij, Gijs Willem (author), Rietveld, Gert (author), Vaessen, P.T.M. (author), Ghaffarian Niasar, M. (author)This paper comprehensively reviews several techniques that address the static and dynamic voltage balancing of series-connected MOSFETs. The effectiveness of these techniques was validated through simulations and experiments. Dynamic voltage-balancing techniques include gate signal delay adjustment methods, passive snubbers, passive clamping...journal article 2024
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Lagemann, Luca (author)Mechanical metamaterials are architected materials with unique properties derived from their internal structure, rather than the material they consist of. Introducing distinct stable states into the material architecture allows the creation of mechanical metamaterials with multiple effective properties that can be altered post-fabrication. So...master thesis 2023
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Gong, Haoran (author)With the great application potential of the Internet of Things (IoT), a reliable power supply solution for IoT plays an important role during the development of IoT and other advanced applications. Among all the options including the electricity grid, batteries, and energy harvesting systems, the energy harvesting systems are considered with...master thesis 2023
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Wang, Gary (author)The development of the Internet of Things has given rise to enormous new industries and applications, including automobiles, smart healthcare systems, smart houses, etc, and the power supply has become the major constraint preventing them from further increasing logic speed. Thus, a SC(switch-capacitance) DC-DC converter with high efficiency,...master thesis 2023
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Ummels, Raphael (author)Inland waterway transport is a low CO2 emission alternative to road transport. A shift towards more inland waterway transport could also help reduce road congestion and noise pollution. Infrastructure bottlenecking, particularly at locks, is part of the reasons preventing this shift. Congestion is leading to delays. Locks can be physically...master thesis 2023
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Lin, Ningchao (author)Resonant switch-capacitor (ReSC) is a type of hybrid switched-capacitor (HSC) which utilizes both inductor and capacitor, bearing the potential to overpower conventional switched-capacitor (SC) and magnetic-based converters. This work introduces a novel four-phase series-parallel resonant switch-capacitor (ReSC) DC-DC converter topology, which...master thesis 2023
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Buijnsters, Jan (author)Industry 4.0 and the Industrial Internet of Things (IIoT) growth will result in an explosion of data generated by connected devices. Adapting 5G and 6G technology could be the leading enabler of the broad possibilities of connecting IIoT devices in masses. However, the edge solution has some disadvantages, such as the loss of resource elasticity...master thesis 2023
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de Jong, Martin (author)In the field of mechanical metamaterials, unconventional physical properties are realized by changing the geometric structure of a unit cell. A metamaterial is composed of numerous unit cells. Researchers have taken it a step further by making a reprogrammable unit cell. A reprogrammable metamaterial has additional elements or mechanisms in the...master thesis 2023
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Rijkeboer, Mats (author)Highly accurate time sources, such as Cesium-based or GPS clocks, are the best candidates to provide a correct notion of time, but are too costly and impractical for implementation in every modern digital device. Ubiquitously, (crystal) oscillators are employed instead. To maintain a shared notion of time, the offsets and drift/jitter have to be...master thesis 2023
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Gao, Z. (author), He, J. (author), Fritz, Martin (author), Shen, Y. (author), Zong, Z. (author), Spalink, Gerd (author), Alavi, S.M. (author), Staszewski, R.B. (author), Babaie, M. (author)This article introduces a low-jitter low-spur fractional-N phase-locked loop (PLL) adopting a new concept of a time-mode arithmetic unit (TAU) for phase error extraction. The TAU is a time-signal processor that calculates the weighted sum of input time offsets. It processes two inputs - the period of a digitally controlled oscillator (DCO)...journal article 2023
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Peng, W. (author), Du, S. (author)A triboelectric nanogenerator (TENG) is a new transducer utilizing contact electrification and electrostatic induction to transform mechanical energy into electric energy. Due to its high energy density and flexibility, it can be employed to make electronic devices self-powered by harvesting ambient mechanical energy in many application...journal article 2023
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Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)Modular Multilevel Converters (MMCs) find increasing applications in medium to high-voltage systems. In such systems, reliability-oriented selection of power electronic switches becomes essential because higher modularity implies an increased number of components. The trade-off between the impact of higher modularity on converter reliability...journal article 2023