Browsing by Author "Luna Alloza, Álvaro"
Now showing items 1-20 of 185
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A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter
Roslan, Nurul Fazlin; Suul, Jon Are; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016)
Conference report
Open AccessGrid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of ... -
A control strategy for DC-link voltage control containing PV generation and energy storage — An intelligent approach
Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyIn this paper, DC-link voltage control in DC microgrids with photovoltaic (PV) generation and battery, is addressed based on an intelligent approach. The proposed strategy is based on the modeling of the power interface, ... -
A generalized voltage droop strategy for control of multi-terminal DC grids
Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference lecture
Restricted access - publisher's policyThis paper proposes a generalized voltage droop (GVD) control strategy for control and power sharing in voltage source converter (VSC)-based multi-terminal DC (MTDC) grids. In the proposed approach, the conventional voltage ... -
A generalized voltage droop strategy for control of multiterminal DC grids
Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2015-02)
Article
Open AccessThis paper proposes a generalized voltage droop (GVD) control strategy for dc voltage control and power sharing in voltage source converter (VSC)-based multiterminal dc (MTDC) grids. The proposed GVD control is implemented ... -
A hierarchical control structure for multi-terminal VSC-based HVDC grids with GVD characteristics
Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
Conference lecture
Restricted access - publisher's policyThis paper presents a hierarchical control structure for Multi terminal HVDC grids. The hierarchical control structure is inspired by the three-layer control structure of largescale AC power systems and it is divided into ... -
A hybrid power flow controller for flexible operation of multi-terminal DC grids
Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyThis paper develops a hybrid power flow controller (HPFC) to take one step forward for building future flexible DC transmission system (FDCTS). The idea for proposing HPFC is inspired by the successful operation of flexible ... -
A modified partial power structure for quasi Z-source converter to improve voltage gain and power rating
Honarmand, Shahin; Rajaei, Amirhossein; Shahparasti, Mahdi; Luna Alloza, Álvaro; Pouresmaeil, Edris (2019-06-01)
Article
Open AccessEmploying partial power processing (PPP) technique for quasi Z-source converter (QZSC) a new structure of the converter is presented. Using PPP technique although eliminates electrical insolation, but permits reducing ... -
A novel approach for voltage control of multi-terminal DC grids with offshore wind farms
Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
Conference lecture
Restricted access - publisher's policyThis paper proposes a novel control strategy in multi-terminal DC (MTDC) grids with offshore wind generation based on the idea of generalized voltage droop (GVD). In the proposed strategy, the GVD characteristics are ... -
A proportional resonant controller tuning method for grid connected power converters with LCL+trap filter
Zhang, Weiyi; Mir Cantarellas, Antonio; Remón, D.; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2014)
Conference report
Restricted access - publisher's policyThree-phase power converters are largely employed in power generation facilities based on renewable energy sources, and these converters commonly working in grid connection mode are frequently connected to the grid through ... -
A protection strategy for fault detection and location for multi-terminal MVDC distribution systems with renewable energy systems
Monadi, Mehdi; Koch-Ciobotaru, Cosmin; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyA fault location method and a fault clearance strategy are presented in this paper for medium voltage dc (MVDC) distribution system. MVDC systems are applicable for connection between microgrids (MGs) and integration of ... -
A sensor-less sliding mode control scheme for a stand-alone wound rotor synchronous generator under unbalanced load conditions
Muñoz Aguilar, Raúl Santiago; Rodríguez Cortés, Pedro; Dòria Cerezo, Arnau; Candela García, José Ignacio; Luna Alloza, Álvaro (2004-09)
Article
Restricted access - publisher's policyThis paper presents a sliding mode control for a wound rotor synchronous machine acting as an isolated generator connected to an unbalanced load. In order to simplify the control methodology, the standard dq-model of the ... -
A simplified model for wind turbine based on doubly fed induction generator
Lima, F. K. A.; Watanabe, Edson H.; Rodríguez Cortés, Pedro; Luna Alloza, Álvaro (2011)
Conference report
Restricted access - publisher's policyImproving the Fault Ride Through capability (FRT) of Doubly Fed Induction Generators (DFIG) in wind power applications is a very important challenge for wind power industry. The mathematical models of such generators ... -
A simulation study of proportional resonant controller based on the implementation of frequency-adaptive virtual flux estimation with the LCL filter
Roslan, Nurul Fazlin; Suul, Jon Are; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2015)
Conference report
Open AccessThis paper discusses the implementation of proportional resonant (PR) current controllers for a Voltage Source Converter (VSC) with LCL filter which is synchronized to the grid by virtual flux (VF) estimation with inherent ... -
A stationary reference frame grid synchronization system for three-phase grid-connected power converters under adverse grid conditions
Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Muñoz Aguilar, Raúl Santiago; Etxebarría, Ion; Teodorescu, Remus; Blaabjerg, Frede (2012-01)
Article
Restricted access - publisher's policyGrid synchronization algorithms are of great importance in the control of grid-connected power converters, as fast and accurate detection of the grid voltage parameters is crucial in order to implement stable control ... -
A unified power flow controller using a power electronics integrated transformer
Atef Elsaharty, Mohammed; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2019-02-05)
Article
Open AccessThis paper presents a Unified Power Flow Controller (UPFC) application of the Custom Power Active Transformer (CPAT); a power electronics integrated transformer which provides services to the grid through ... -
ACCIONAMENT DE MÀQUINES ELÈCTRIQUES (1 quadrimestre, 1r parcial)
Luna Alloza, Álvaro (Universitat Politècnica de Catalunya, 2010-11-03)
Exam
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ACCIONAMENT DE MÀQUINES ELÈCTRIQUES (1 quadrimestre, 2a avaluació)
Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Universitat Politècnica de Catalunya, 2010-01-15)
Exam
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ACCIONAMENTS DE MÀQUINES ELÈCTRIQUES (Examen 1r Quadr.)
Luna Alloza, Álvaro (Universitat Politècnica de Catalunya, 2005-10-03)
Exam
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ACCIONAMENTS DE MÀQUINES ELÈCTRIQUES (Examen 1r Quadr.)
Luna Alloza, Álvaro (Universitat Politècnica de Catalunya, 2006-01-17)
Exam
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Accionaments de màquines elèctriques (Examen 1r Quadr.)
Luna Alloza, Álvaro (Universitat Politècnica de Catalunya, 2008-11-03)
Exam
Restricted access to the UPC academic community