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Zhang, X. (author), Hassan HosseinNia, S. (author)Reset control systems have possessed the potential to meet the demands of machines, such as faster response times, improved disturbance rejection and enhanced tracking performance. However, prior research on the analysis and design of reset controllers has been restricted to the assumption of two resets per period, neglecting multiple-reset...conference paper 2023
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Yu, G. (author), Dong, J. (author), Soeiro, Thiago B. (author), Bauer, P. (author)This paper introduces variable-frequency zero voltage switching (ZVS) modulation strategy for the four-switch buck+boost converter with one operating pattern for the inductor current, i.e., three-segment inductor current modulation control. The proposed modulation scheme guarantees a smooth transition from step-up to step-down or from step-down...conference paper 2023
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Späth, Jana M. (author), Kolovou Kouri, K. (author), Holzapfel, L.F.M. (author), Thewes, Roland (author), Giagka, Vasiliki (author)Safety is a critical consideration when designing an electrical neural stimulator, given the direct contact with neural tissue. This paper presents the design of a charge balancing system suitable for frequencies up to the kilohertz domain, to be used as an add-on system for stimulators over a wide range of frequencies, also covering nerve...conference paper 2023
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Yuan, Yiping (author), Liu, Zhou (author), Chen, Zhe (author), Hoej Jensen, Kim (author), Popov, M. (author)With the increasing penetration of converter-interfaced generators, the frequency containment reserve (FCR) from conventional generators keeps going down, leading to a potential risk of frequency instability under contingencies. Consequently, Converter-interfaced generators are required to provide FCR and participate in the corrective...journal article 2023
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Singh, G.D. (author), Nemati, Hossein Mashad (author), Alavi, S.M. (author), de Vreede, L.C.N. (author)This article presents an inverted Doherty power amplifier (IDPA) made load insensitive up to 2:1 voltage standing wave ratio (VSWR) across its fractional bandwidth with a very compact wideband impedance sensor embedded in its output power-combining network (OPCN). To correct for load variation, a low-loss tunable resonator (TR) is used to...journal article 2023
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de Koster, P.B.J. (author), Wahls, S. (author)We present a fast method to calculate the significantly large solitonic components of signals with large time-bandwidth products governed by the nonlinear Schrödinger equation, for which the computation typically becomes prohibitively expensive and/or numerically unstable. We partition the full signal in both frequency and time to obtain...journal article 2023
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Nasirpour, F. (author), Heidary, Amir (author), Ghaffarian Niasar, M. (author), Lekić, A. (author), Popov, M. (author)High local electric field intensity in transformer windings originating from transient signals is one of the reasons for transformer failures. Due to the integration of renewable energy sources into the power grids and the increased number of transients, the likelihood of transformer catastrophic failure increases accordingly. Therefore, to...journal article 2023
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Shen, Y. (author), Hoogelander, M. (author), Bootsman, R.J. (author), Alavi, S.M. (author), de Vreede, L.C.N. (author)A current-mode direct-digital RF modulator (DDRM)-based transmitter (TX) architecture is proposed in this article for energy-efficient wireless applications. To demonstrate its key principles, a 2×13 bit demonstrator is implemented in a 40-nm CMOS technology. This DDRM can operate standalone or as a driver for a common-gate (CG)/common-base ...journal article 2023
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Sarafraz, A. (author), Givois, A.P.P. (author), Roslon, I.E. (author), Liu, Hanqing (author), Brahmi, Hatem (author), Verbiest, G.J. (author), Steeneken, P.G. (author), Alijani, F. (author)The resonance frequency of ultra-thin layered nanomaterials changes nonlinearly with the tension induced by the pressure from the surrounding gas. Although the dynamics of pressurized nanomaterial membranes have been extensively explored, recent experimental observations show significant deviations from analytical predictions. Here, we...journal article 2023
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Petroulakis, Nikolaos (author), Mattsson, Mats-Olof (author), Chatziadam, Panos (author), Simko, Myrtill (author), Gavrielides, Andreas (author), Yiorkas, Andrianos (author), Zeni, Olga (author), Scarfi, MR (author), Spirito, M. (author)The evolution of emerging technologies that use Radio Frequency Electromagnetic Field (RF-EMF ) has increased the interest of the scientific community and society regarding the possible adverse effects on human health and the environment. This article provides NextGEM’s vision to<br/>assure safety for EU citizens when employing existing and...journal article 2023
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Zuniga, Nelson Ricardo Coelho Flores (author), Draganov, D.S. (author), Ghose, R. (author)Using the critical angle information of a reflection event, it is possible to calculate several essential physical parameters that are key to reliable geological characterization of the subsurface. However, estimation of the critical angle usually requires several steps of seismic processing. For this reason, an approach which is capable of...journal article 2023
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Van Haren, Max (author), Mirkin, Leonid (author), Blanken, Lennart (author), Oomen, T.A.E. (author)Fast-sampled models are essential for control design, e.g., to address intersample behavior. The aim of this letter is to develop a non-parametric identification technique for fast-sampled models of systems that have relevant dynamics and actuation above the Nyquist frequency of the sensor, such as vision-in-the-loop systems. The developed...journal article 2023
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Jin, J. (author), Li, Z. (author)Empirical mode decomposition (EMD) lacks a strong theoretical support although extensively applied. We propose a theoretical framework for a succinct EMD in this work, with the assumption of invariant extrema locations for one IMF extraction. We define the envelope mean filter (EMF) and prove that the filter matrix satisfies five properties....journal article 2023
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Rivandi, H. (author), Lopes Marta da Costa, T.M. (author)Ultrasound (US) neuromodulation and ultrasonic power transfer to implanted devices demand novel ultrasound transmitters capable of steering focused ultrasound waves in 3D with high spatial resolution and US pressure, while having a miniaturized form factor. Meeting these requirements needs a 2D array of ultrasound transducers directly...journal article 2023
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Kakolaki, Seyed Ebrahim Hosseini (author), Hakimian, Vahid (author), Sadeh, Javad (author), Rakhshani, E. (author)The sudden outage of a transformer due to a fault can cause irreparable damage to the electricity industry. Hence, by conducting momentarily inspections of the transformer's condition, faults can be promptly detected, and the transformer can be disconnected from the power grid to prevent subsequent failures in this equipment. Detecting faults...journal article 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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Harbi, Ibrahim (author), Rodriguez, Jose (author), Poorfakhraei, Amirreza (author), Vahedi, H (author), Guse, Miguel (author), Trabelsi, Mohamed (author), Abdelrahem, Mohamed (author), Ahmed, Mostafa (author), Lin, Chang Hua (author)Multilevel converters (MLCs) are widely recognized for their exceptional benefits and have emerged as the preferred choice for medium- and high-power/voltage applications. Their usage has also been extended to low-power applications to overcome issues associated with high switching frequencies and electromagnetic interference (EMI) commonly...journal article 2023
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Zuniga, Nelson Ricardo Coelho Flores (author), Draganov, D.S. (author), Ghose, R. (author)Using post-critical reflection data, it is possible to obtain useful information that allows more reliable geological characterization of the subsurface. However, the strong distortion caused by the phase shift in post-critical wavelets makes the use of post-critical reflections rather challenging. For this reason, an approach which is...journal article 2023
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Lyu, D. (author), Straathof, C.A. (author), Soeiro, Thiago B. (author), Qin, Z. (author), Bauer, P. (author)This paper proposes two modulation schemes for Dual Active Bridge (DAB) converters, with the aim of maximizing Zero Voltage Switching (ZVS) operation over a wide operational range. The first is a ZVS-optimized constant frequency modulation scheme, constructed based on the boundary conditions of ZVS operation. This scheme maximizes the number...journal article 2023
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Liu, Hanqing (author), Basuvalingam, Saravana B. (author), Lodha, S.V. (author), Bol, Ageeth A. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Verbiest, G.J. (author)Atomic layer deposition (ALD), a layer-by-layer controlled method to synthesize ultrathin materials, provides various merits over other techniques such as precise thickness control, large area scalability and excellent conformality. Here we demonstrate the possibility of using ALD growth on top of suspended 2D materials to fabricate...journal article 2023