Browsing by Author "Sainz Sapera, Luis"
Now showing items 1-20 of 49
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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 improved harmonic load flow formulation
Rashid, Asim; Mesas García, Juan José; Sainz Sapera, Luis (Taylor & Francis, 2019-10-21)
Article
Restricted access - publisher's policyThe 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 ... -
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 ... -
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 ... -
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 ... -
Estudio de la formulación y resolución del problema del flujo armónico de cargas
Sainz Sapera, Luis (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
Sainz Sapera, Luis; Balcells Sendra, Josep (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
Cunill Solà, Jordi; Mesas García, Juan José; Sainz Sapera, Luis (2011)
Conference report
Restricted access - publisher's policy -
Harmonic interaction influence due to current source shunt filters in networks supplying nonlinear loads
Sainz Sapera, Luis; Balcells Sendra, Josep (2012)
Article
Restricted access - publisher's policy -
Harmonic resonance stability of aeronautical ground lighting systems
Vidal, Daniel; Monjo Mur, Lluís; Sainz Sapera, Luis (Institute of Electrical and Electronics Engineers (IEEE), 2018-12)
Article
Restricted access - publisher's policyAeronautical ground lighting (AGL) systems assist aircraft pilots in airport operations. These systems are singlephase series circuits where constant current regulators (CCRs) feed luminaires with an adjustable rms current. ... -
Impact of voltage sags on DC bus voltage in unipolar LVDC systems
Monjo Mur, Lluís; Mesas García, Juan José; Sainz Sapera, Luis; Saura Perisé, Jaime; Pedra Durán, Joaquim (2015)
Conference report
Open Access