Browsing by Author "Sainz Sapera, Luis"
Now showing items 1-20 of 66
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A faster resonance mode analysis approach based on a modified shifted-inverse power iteration method
Cartiel Arasa, Oriol; Mesas García, Juan José; Sainz Sapera, Luis; Fàbregas Silvestre, Andreu (Institute of Electrical and Electronics Engineers (IEEE), 2023-12-01)
Article
Open AccessResonance mode analysis (RMA) is a promising approach for harmonic power quality and stability studies because it enables the characterization of resonances. However, RMA requires the determination of the eigenpair ... -
A parametric approach for the study of three-phase inverters subject to grid faults
Rolán Blanco, Alejandro; Sainz Sapera, Luis (2022)
Conference lecture
Open AccessThe aim of this work is to describe the behavior of three-phase inverters connected to a faulty grid by means of a parametric approach which gives rise to limaçon of Pascal curves and 3D figures formed by the injected ... -
A unified analytical model for characterization of cable faults in VSC DC systems
Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
Conference report
Open Access -
Admittance study of grid-connected VSCs for harmonic oscillatory instabilities
Sainz Sapera, Luis; Monjo, Luis; Cheah Mañé, Marc; Liang, Jun; Gomis Bellmunt, Oriol; Prieto Araujo, Eduardo (2019-09-17)
Article
Open AccessVoltage source converters (VSCs) can reduce damping of grid-connected VSC systems at harmonic resonances, leading to system instability. The conductance of the VSC admittance can be shaped selecting appropriate VSC parameter ... -
Aeronautical ground lighting system study: field measurements and simulations
Vidal, Daniel; Monjo Mur, Lluís; Sainz Sapera, Luis (2016-10-06)
Article
Open AccessAeronautical ground lighting (AGL) systems are single-phase series circuits where constant current regulators supply transformers and luminaires. These systems provide visual reference to aircraft during airport operations. ... -
An appropriate index to assess the global cancellation level of the harmonic currents consumed by a set of single-phase uncontrolled rectifiers and a set of fluorescent lamps
Mesas García, Juan José; Sainz Sapera, Luis; Monjo Mur, Lluís; Pedra Durán, Joaquim (2022-06-13)
Article
Open AccessAn in-depth study of harmonic current reduction in European commercial buildings due to the harmonic cancellation effect when a set of single-phase uncontrolled rectifiers and a set of fluorescent lamps are connected at ... -
An improved harmonic load flow formulation
Rashid, Asim; Mesas García, Juan José; Sainz Sapera, Luis (Taylor & Francis, 2019-10-21)
Article
Open AccessThe paper contributes an improved harmonic load flow formulation with fewer convergence problems but the same accurate results as traditional formulations. The proposed formulation approaches the harmonic load flow problem ... -
Assessment of subsynchronous oscillations in AC grid-connected VSC systems with type-4 wind turbines
Sainz Sapera, Luis; Monjo Mur, Lluís; Cheah Mañé, Marc; Liang, Jun (2019-12-09)
Article
Open AccessConverters are the key for increasing the development of renewable energy generation but their dynamic interaction with the grid has an important impact on stability. Oscillatory instabilities in different grid-connected ... -
Average value of the DC-link output voltage in multi-phase uncontrolled bridge rectifiers under supply voltage balance and unbalance conditions
Saura Perisé, Jaime; Mesas García, Juan José; Sainz Sapera, Luis (2021-12-01)
Article
Open AccessAverage value of the DC-link output voltage is a variable of interest in multi-phase uncontrolled bridge rectifiers. The aim of this paper is to present a new, effort-saving procedure capable of providing an accurate value ... -
Cable fault characterization in VSC DC systems
Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2016)
Conference lecture
Restricted access - publisher's policy -
Compact fluorescent lamp modeling for large-scale harmonic penetration studies
Molina, Julio; Sainz Sapera, Luis (2014-10-20)
Article
Restricted access - publisher's policyLow-watt compact fluorescent lamps (CFLs) may account for significant energy consumption of power distribution feeders in future years. This can lead to power-quality concerns because these devices consume highly distorted ... -
Comparison of small-signal admittance-based models of doubly-fed induction generators
Pedra Durán, Joaquim; Sainz Sapera, Luis; Monjo Mur, Lluís (2023-02)
Article
Restricted access - publisher's policyThis paper reviews and compares the main doubly-fed induction generator (DFIG) models for stability assessment in the literature by PSCAD/EMTDC simulation. The main contribution of the paper is a detailed study on small- ... -
Criterion for the electrical resonance stability of offshore wind power plants connected through HVDC links
Cheah Mañé, Marc; Sainz Sapera, Luis; Liang, Jun; Jenkins, Nicholas; Ugalde Loo, Carlos E. (2017-11-01)
Article
Open AccessElectrical resonances may compromise the stability of HVDC-connected offshore wind power plants (OWPPs). In particular, an offshore HVDC converter can reduce the damping of an OWPP at low-frequency series resonances, leading ... -
Currents' physical components (CPC) concept in wind farm harmonic current studies
Sainz Sapera, Luis; Cunill Solà, Jordi (2011)
Conference lecture
Open AccessVery little information about actual wind farm harmonic measurements is available in the literature. This paper analyzes the harmonic measurements of an 18 MW wind farm with the CPC concept to determine if they are ... -
DC Admittance Model of VSCs for Stability Studies in VSC-HVDC Systems
Pedra Durán, Joaquim; Sainz Sapera, Luis; Monjo Mur, Lluís (2023-07-01)
Article
Open AccessHigh-voltage direct current (HVDC) systems linked to AC grids with converters are promising energy transmission systems. These systems present complex AC- and DC-side dynamic interactions. Impedance-based stability studies ... -
Deterministic and stochastic assessment of the harmonic currents consumed by discharge lamps
Mesas García, Juan José; Sainz Sapera, Luis; Ferrer Biosca, Alberto (2011-01)
Article
Restricted access - publisher's policy -
Deterministic and stochastic study of wind farm harmonic currents
Sainz Sapera, Luis; Mesas García, Juan José; Teodorescu, Remus; Rodríguez Cortés, Pedro (2010-06-03)
Article
Open AccessWind farm harmonic emissions are a well-known power quality problem, but little data based on actual wind farm measurements are available in literature. In this paper, harmonic emissions of an 18MWwind farm are investigated ... -
Effect of wind turbine converter control on wind power plant harmonic response and resonances
Sainz Sapera, Luis; Monjo Mur, Lluís; Pedra Durán, Joaquim; Cheah Mañé, Marc; Liang, Jun; Gomis Bellmunt, Oriol (2017-02-01)
Article
Restricted access - publisher's policyWind turbine harmonic emissions due to power electronics are a well-known power quality concern in wind power plants (WPPs). This problem may be increased by resonances because they amplify harmonic distortion around ... -
Electrical resonance instability study in traction systems
Sainz Sapera, Luis; Monjo Mur, Lluís; Mesas García, Juan José; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyTraction system stability can be affected by the interaction between the traction load and resonances in the railway traction grid. This paper presents an electrical resonance instability study applied to traction systems. ... -
Electrical resonance instability study in wind power plants
Sainz Sapera, Luis; Mesas García, Juan José; Monjo Mur, Lluís; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyWind power plant stability can be affected by the interaction between the wind turbine and the resonances in the collector grid. This paper presents an electrical resonance instability study applied to wind power plants. The ...