Browsing by Subject "Power electronics"
Now showing items 1-20 of 293
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2 transistors + 2 diodes-based PEBB designed for general applications in power electronics
(2009)
Conference lecture
Open AccessThis paper presents a new Power Electronic Building Block (PEBB) designed to facilitate the implementation of different power converter topologies. The proposed PEBB consists of two diodes and two transistors and it can ... -
A behavioural dynamic model for constant power loads in single-phase AC systems
(2021-09-01)
Article
Open AccessConstant power loads (CPLs) in power systems have a destabilizing effect that gives rise to significant oscillations or to network collapse, motivating the development of new methods to analyse their effect in AC and DC ... -
A Closed-loop capacitance to pulse-width converter for single element capacitive sensors
(2019)
Conference report
Open AccessA novel closed-loop capacitance-to-pulse width converter (CPC) suitable for single element capacitive sensors that use sinusoidal excitation is presented in this paper. Its operation is realized using a new configuration ... -
A compact Thévenin model for a rectenna and its application to an RF harvester with MPPT
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-06)
Article
Open AccessThis paper proposes a compact Thévenin model for a rectenna. This model is then applied to design a high-efficiency radio frequency harvester with a maximum power point tracker (MPPT). The rectenna under study consists of ... -
A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter
(2017-08-23)
Article
Restricted access - publisher's policyGrid synchronization based on Virtual Flux (VF) estimation allows for control of grid-connected power converter without depending on AC-voltage measurements. This is useful in voltage-sensor-less applications for reducing ... -
A comparative study of smart THD-based fault protection techniques for distribution networks
(2023-05-01)
Article
Open AccessThe integration of Distributed Generators (DGs) into distribution systems (DSs) leads to more reliable and efficient power delivery for customers. However, the possibility of bi-directional power flow creates new technical ... -
A comparative study of terminal and conventional sliding mode start-up peak current controls for a synchronous buck converter
(Institute of Electrical and Electronics Engineers (IEEE), 2019-08-20)
Article
Open AccessAn alternative to the linear control techniques, which are based on small signal averaged models, is the sliding mode control. That method uses instantaneous models of the switched power converter to design robust controllers. ... -
A control technique for integration of DG units to the electrical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2013-07)
Article
Restricted access - publisher's policyThis paper deals with a multiobjective control technique for integration of distributed generation (DG) resources to the electrical power network. The proposed strategy provides compensation for active, reactive, and ... -
A coordinated voltage regulation algorithm of a power distribution grid with multiple photovoltaic distributed generators based on active power curtailment and on-line tap changer
(2023-07-01)
Article
Open AccessThe aim of this research is to manage the voltage of an active distribution grid with a low X/R ratio and multiple Photovoltaic Distributed Generators (PVDGs) operating under varying conditions. This is achieved by providing ... -
A design-oriented combined approach for bifurcation prediction in switched-mode power converters
(Institute of Electrical and Electronics Engineers (IEEE), 2010-03)
Article
Restricted access - publisher's policyIn this brief, two different approaches are combined for studying the stability of a buck switching power dc-dc converter and for predicting its bifurcations. Instability indexes derived from both approaches are combined ... -
A fully parameterizable low power design of vector fused multiply-add using active clock-gating techniques
(Association for Computing Machinery (ACM), 2016)
Conference report
Restricted access - publisher's policyThe need for power-efficiency is driving a rethink of design decisions in processor architectures. While vector processors succeeded in the high-performance market in the past, they need a re-tailoring for the mobile market ... -
A High-Efficiency RF Harvester with Maximum Power Point Tracking
(Multidisciplinary Digital Publishing Institute (MDPI), 2018)
Conference report
Open AccessThis paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT). The rectenna was characterized from -30 dBm to -10 dBm at ... -
A hybrid energy storage solution based on supercapacitors and batteries for the grid integration of utility scale photovoltaic plants
(Elsevier, 2022-07-01)
Article
Open AccessThis paper presents a 2-level controller managing a hybrid energy storage solution (HESS) for the grid integration of photovoltaic (PV) plants in distribution grids. The HESS is based on the interconnection of a lead-acid ... -
A hybrid system-level prognostics approach with online RUL forecasting for electronics-rich systems with unknown degradation behaviors
(2020-08)
Article
Open AccessThis paper proposes a system-level prognostic approach for power electronic systems with slow degradation profiles. Although a model-based approach has been adopted to deal with such multivariable dynamical systems with ... -
A multilevel active-clamped converter topology—Operating principle
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
Article
Restricted access - publisher's policyThis paper presents a novel multilevel activeclamped converter topology, which is an extension to m levels of the three-level active neutral-point-clamped topology. The operating principle is established through the ... -
A new THD measurement method with small computational burden using a SOGI-FLL grid monitoring system
(Institute of Electrical and Electronics Engineers (IEEE), 2020-06-01)
Article
Open AccessThis article proposes a new method for obtaining the total harmonic distortion (THD) using few math operations, a low-pass filter (LPF), and a grid monitoring system able to provide the fundamental and harmonics components ... -
A nonlinear time-varying map of a buck power-switching amplifier for wide band tracking applications
(Emerald, 2010)
Article
Restricted access - publisher's policyPurpose The purpose of this paper is to characterize the nonlinear dynamical behaviour of a buck-based power-switching amplifier controlled by fixed frequency and pulse width modulation with a proportional-integral ... -
A novel condition monitoring scheme for bearing faults based on Curvilinear Component Analysis and hierarchical neural networks
(2012)
Conference report
Restricted access - publisher's policyMostly the faults in electrical machines are related with the bearings. Thus, a reliable bearing condition monitoring scheme able to detect either local or distributed defects are mandatory to avoid a breakdown in the ... -
A novel pulsewidth modulation for the comprehensive neutral-point voltage control in the three-level three-phase neutral-point-clamped dc-ac converte
(Universitat Politècnica de Catalunya, 2006-02-08)
Doctoral thesis
Open AccessLas topologías de convertidores multinivel han recibido una atención especial durante las dos últimas décadas debido a sus notables ventajas en aplicaciones de alta potencia y media/alta tensión. En estas topologías, y ... -
A novel three-dimensional sigma–delta modulation for high-switching-frequency three-phase four-wire active power filters
(2024-02-01)
Article
Open AccessThis article presents a new modulation technique called three-dimensional sigma–delta (3D-S¿ ) modulation for high-frequency three-leg four-wire voltage source converters (VSCs) that use wide-bandgap (WBG) semiconductors. ...
