Browsing by Author "Sainz Sapera, Luis"
Now showing items 1-20 of 57
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A unified analytical model for characterization of cable faults in VSC DC systems
(2015)
Conference report
Open Access -
Admittance study of grid-connected VSCs for harmonic oscillatory instabilities
(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
(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
(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
(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
(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
(2021-12-01)
Article
Restricted access - publisher's policyAverage 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
(2016)
Conference lecture
Restricted access - publisher's policy -
Compact fluorescent lamp modeling for large-scale harmonic penetration studies
(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 ... -
Criterion for the electrical resonance stability of offshore wind power plants connected through HVDC links
(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
(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 ... -
Deterministic and stochastic assessment of the harmonic currents consumed by discharge lamps
(2011-01)
Article
Restricted access - publisher's policy -
Deterministic and stochastic study of wind farm harmonic currents
(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
(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
(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
(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 ... -
Estudio de la formulación y resolución del problema del flujo armónico de cargas
(Universitat Politècnica de Catalunya, 1995-01-10)
Doctoral thesis
Open AccessLa tesis estudia el problema del flujo armónico de cargas desde dos puntos de vista. La formulación del problema del flujo armónico de cargas analizando los distintos métodos existentes en la bibliografía y desarrollando ... -
Experimental measurements about harmonic current mitigation of electric vehicle battery chargers
(2011)
Conference lecture
Open AccessThe expected high penetration of battery chargers for electric vehicles (EV) in electric networks is foreseen as a potential problem for power quality. Battery chargers are nonlinear devices that inject harmonic currents ... -
Experimental measurements of fluorescent lamp harmonic current emissions and their impact on neutral current
(2011)
Conference report
Restricted access - publisher's policy -
Frequency domain stability assessment of photovoltaic power generation systems with quasi-z-source inverters
(2021-09-01)
Article
Open AccessPhotovoltaic power generation systems are one of the main renewable power sources, and quasi-Z-source inverters are becoming powerful devices to integrate these systems in AC grids. However, stability issues due to the ...
