Blar i NTNU Open på forfatter "Molinas Cabrera, Maria Marta"
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Effect of non-ideal power take-off on the electric output power of a wave energy converter under suboptimal control
Pettersen, Martine F.; Fosso, Olav B; Garcia Rosa, Paula Bastos; Molinas Cabrera, Maria Marta (Chapter, 2021)This work investigates how the physical limitations and losses of an electric power takeoff (PTO) system affect the production of power for a wave energy converter (WEC) under suboptimal control strategies. The damping of ... -
Efficient Phasor Estimation under Steady State and Dynamic Conditions
Khodaparast Ghadikolaei, Jalal; Fosso, Olav B; Molinas Cabrera, Maria Marta (Chapter, 2018)Phasor estimation has many application areas and has therefore attracted significant research focus. Classical phasor estimation proposed many years ago, considers the phasor to be time independent which means constant ... -
Electrical Machines and Power Electronics for Starter-Generators in More Electric Aircrafts: A Technology Review
Nøland, Jonas Kristiansen; Leandro, Matteo; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta; Nilssen, Robert (Chapter, 2019)Safety-critical power conversion systems play a major role in the paradigm shift towards more electric aircraft (MEA) architectures. This paper reviews the electrical machines and their power electronic systems that are ... -
Electroencephalographic Source Localization based on Enhanced Empirical Mode Decomposition
Maximiliano, Bueno-López; Pablo Andrés, Muñoz-Gutiérrez; Eduardo, Giraldo; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2019) -
EMD Mode Mixing Separation of Signals with Close Spectral Proximity in Smart Grids
Fosso, Olav B; Molinas Cabrera, Maria Marta (Chapter, 2018)The Empirical Mode Decomposition (EMD) is a signal analysis method that separates multi-component signals into single oscillatory modes called intrinsic mode functions (IMFs). These IMFs can generally be associated to a ... -
EMD-Prony for Phasor Estimation in Harmonic and Noisy Condition
Khodaparast Ghadikolaei, Jalal; Fosso, Olav B; Molinas Cabrera, Maria Marta (Chapter, 2018)Wide area monitoring systems (WAMSs) enables the real-time monitoring of power system dynamics by bringing together new developments in the field of measurement, communication and computing. Measurements of voltage and ... -
Evaluation of wave-frequency motions extraction from dynamic positioning measurements using the empirical mode decomposition
Garcia Rosa, Paula Bastos; Brodtkorb, Astrid H.; Sørensen, Asgeir Johan; Molinas Cabrera, Maria Marta (Chapter, 2019)For dynamic positioning operations, high-frequency wave induced motions cause excessive control action, and consequently additional power consumption and wear of actuators in the propulsion system. Thus, such operations ... -
Event-related potential from EEG for a two-step Identity Authentication System
Moctezuma, Luis Alfredo; Molinas Cabrera, Maria Marta (Peer reviewed; Journal article, 2019)Current problems related to high-level security access are increasing, leaving organizations and persons unsafe. A recent good candidate to create a robust identity authentication system is based on brain signals recorded ... -
Exploring the Attributes of Particle Filter vs Nonlinear Kalman Filter for Battery State of Charge Estimation
Roaldsnes, Kristian Eggereide; Gjengedal, Ørjan; Molinas Cabrera, Maria Marta (Chapter, 2018)Accurately knowing the State of Charge (SoC) of a Lithium Ion Battery is critical for many applications, and various methods for determining it have been proposed. This paper examines the differences between the Central ... -
Exploring the Potential for Increased Production from the Wave Energy Converter Lifesaver by Reactive Control
Sjolte, Jonas; Sandvik, Christian Mclisky; Tedeschi, Elisabetta; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2013)Fred Olsen is currently testing their latest wave energy converter (WEC), Lifesaver, outside of Falmouth Bay in England, preparing it for commercial operation at the Wavehub test site. Previous studies, mostly focusing on ... -
Freewheeling Current-Based Sensorless Field-Oriented Control of Five-Phase Permanent Magnet Synchronous Motors Under IGBT Failures of a Single Phase
Tian, Bing; Molinas Cabrera, Maria Marta; An, Quntao; Bo, Zhou; Wei, Jiadan (Peer reviewed; Journal article, 2021)Model-based sensorless field-oriented control (FOC) suffers from overparameterization and can be laborious to use for a five-phase permanent magnet synchronous motor. On the other hand, insulated gate bipolar transistor ... -
Frequency Domain Modelling and Stability Analysis of a DFIG-based Wind Energy Conversion System Under None-compensated AC Grids: Impedance Modelling Effects and Consequences on Stability
Zhang, Chen; Molinas Cabrera, Maria Marta; Rygg, Atle; Cai, Xu (Journal article; Peer reviewed, 2019)Impedance-based frequency domain method is an effective tool for the stability assessment of a doubly-fed induction generator (DFIG) system. Several impedance models have been proposed recently, however, these models are ... -
Frequency Domain Modelling for Assessment of Hilbert and SOGI Based Single-Phase Synchronisation
Føyen, Sjur; Fosso, Olav B; Zhang, Chen; Molinas Cabrera, Maria Marta (Chapter, 2019)Two different single-phase synchronisation schemes based on orthogonal system generation (OSG) are modelled in the linear, time-periodic framework. The frequency adaptive Hilbert phase locked loop (PLL) and the frequency-fixed ... -
Frequency Domain Stability Analysis of MMC-Based HVdc for Wind Farm Integration
Lyu, Jing; Cai, Xu; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2016)This paper investigates the stability of offshore wind farms integration through a modular multilevel converter-based high-voltage dc (MMC-HVdc) transmission system. Resonances or instability phenomena have been reported ... -
Frequency Fluctuations in Marine Microgrids: Origins and Identification Tools
Tarasiuk, Tomasz; Zunino, Yuri; Bueno Lopez, Maximiliano; Silvestro, Federico; Pilatis, Andrzej; Molinas Cabrera, Maria Marta (Peer reviewed; Journal article, 2020)Fluctuation of frequency IS arguably the most characteristic feature of marine microgrids. T his concerns both frequency drift during step load change and all quasi-periodic fluctuation due to the impact of various factors ... -
Frequency-dependent source and load impedances in power systems based on power electronic converters
Rygg, Atle; Molinas Cabrera, Maria Marta; Cai, Xu; Chen, Zhang (Chapter, 2016)Representations of power systems by frequency dependent impedance equivalents is an emerging technique in dynamic analyses of power systems including power electronic converters. The technique has been applied for decades ... -
A Fully Tunable Low-power Low-noise and High Swing EMG Amplifier with 8.26 PEF
Naderi, Kebria; Habibzadeh Tonekabony Shad, Erwin; Molinas Cabrera, Maria Marta; Heidari, Ali (Chapter, 2020)In this paper, a low-noise low-power bio-potential amplifier for electromyogram (EMG) signals have designed and simulated in a commercially available 0.18 μm CMOS technology. In the first stage, a tunable band low-noise ... -
Generalized MIMO Sequence Impedance Modeling and Stability Analysis of MMC-HVDC With Wind Farm Considering Frequency Couplings
Zong, Haoxiang; Zhang, Chen; Lyu, Jing; Cai, Xu; Molinas Cabrera, Maria Marta; Fangquan, Rao (Peer reviewed; Journal article, 2020)Recently, small-signal stability of the modular multilevel converter (MMC) based high-voltage direct current (HVDC) transmission for wind farm integration has attracted great attentions. The impedance-based frequency-domain ... -
Handling system harmonic propagation in a diesel-electric ship with an active filter
Rygg, Atle; Skjong, Espen; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2015)Harmonic distortion is often a challenge in marine vessel power systems due to the presence of large motor drives containing diode or thyristor rectifiers. Governing standards impose requirements on bus voltage Total ... -
Harmonic State Space Modeling and Analysis of Modular Multilevel Converter
Jing, Lyu; Xu, Cai; Xing, Zhang; Molinas Cabrera, Maria Marta (Chapter, 2018)Modular multilevel converter (MMC) has complex internal dynamics, such as capacitor voltage fluctuations and harmonic circulating currents, which may have a big impact on the terminal behaviors of the MMC. Therefore, it ...