Browsing by Author "Suul, Jon Are"
Now showing items 1-9 of 9
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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
Fazlin Roslan, Nurul; Suul, Jon Are; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (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 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 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 ... -
Exploring the range of impedance conditioning by virtual inductance for grid connected voltage source converters
Suul, Jon Are; Molinas, Marta; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyConditioning of network impedance by insertion of a virtual inductance as an inherent feature of the converter control system has the potential to extend the range of stable operation of the overall system. This paper ... -
Extended stability range of weak grids with Voltage Source Converters through impedance-conditioned grid synchronization
Suul, Jon Are; D'Arco, Salvatore; Rodríguez Cortés, Pedro; Molinas Cabrera, Marta (2015)
Conference report
Open AccessThe stability range of power transfer in high impedance, weak, grids with Voltage Source Converters (VSC) can be extended a simple modification of the conventional Synchronous Reference Frame Phase Locked Loop (PLL) used ... -
Frequency-adaptive virtual flux estimation for grid synchronization under unbalanced conditions
Suul, Jon Are; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro; Undeland, Tore (2011)
Conference report
Open AccessThis paper proposes a new and explicitly frequencyadaptive method for Virtual Flux estimation and voltage sensorless grid synchronization under unbalanced conditions. The proposed system is based on using Second Order ... -
Impedance-compensated grid synchronisation for extending the stability range of weak grids with voltage source converters
Suul, Jon Are; D'Arco, Salvatore; Rodríguez Cortés, Pedro; Molinas Cabrera, Marta (2016-05-12)
Article
Open AccessThis paper demonstrates how the range of stable power transfer in weak grids with voltage source converters (VSCs) can be extended by modifying the grid synchronisation mechanism of a conventional synchronous reference ... -
Power control of VSC HVDC converters for limiting the influence of ac unbalanced faults on multi-terminal DC grids
Suul, Jon Are; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2010)
Conference report
Restricted access - publisher's policyIt will be important for the operation of future multi-terminal HVDC systems that each converter unit is capable of limiting the influence of nearby AC faults on the DC grid. Thus, the local control systems at each terminal ... -
Voltage-sensor-less synchronization to unbalanced grids by frequency-adaptive virtual flux estimation
Suul, Jon Are; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro; Undeland, Tore (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-07)
Article
Restricted access - publisher's policyThis paper proposes a simple method for inherently frequency-adaptive virtual flux (VF) estimation intended for voltage-sensor-less grid synchronization and control of voltage source converters. The frequency-adaptive ...