Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements

S. Alepuz, S. Busquets-Monge, J. Bordonau, P. Cortés, J. Rodríguez, R. Vargas

Resultado de la investigación: Conference contribution

24 Citas (Scopus)

Resumen

Due to the increase of the distributed power generation in recent years, power system operators have updated their grid connection requirements, in order to include distributed power generation plants operation in the transient operation control of the overall electric power system. Among them, Low Voltage Ride-Through requirements demand wind power plant to remain connected to the network in presence of grid voltage dips, contributing to keep network voltage and frequency stable. Wind power technology points to increase voltage levels. Hence, multilevel converters are well suited for this application. The use of symmetrical components to control grid-connected voltage-source converters is simple and effective, but a sequence separation method is needed, which delivers inexact response during a lapse of time after a fault appearance or clearance. This inaccurate response can be a significant drawback. Predictive current control presents similar dynamic response and reference tracking than other well established control methods, but working at lower switching frequencies. In this work, predictive current control is applied to the grid-side NPC converter, in order to fulfil LVRT requirements. Then, a sequence separation method is not needed and inaccuracies after grid fault appearance and clearance are removed from the system performance. Dc-link neutral point balance is also achieved by means of the predictive control algorithm, which considers the redundant switching states of the NPC. Simulation results confirm the validity of the proposed control approach.

Idioma originalEnglish
Título de la publicación alojadaPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
Páginas2423-2428
Número de páginas6
DOI
EstadoPublished - 2008
EventoPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Rhodes, Greece
Duración: 15 jun 200819 jun 2008

Other

OtherPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
PaísGreece
CiudadRhodes
Período15/06/0819/06/08

Huella dactilar

Low Voltage
Electric current control
Converter
low voltage
converters
grids
Grid
requirements
Requirements
Electric potential
Voltage
Distributed power generation
Wind Power
Wind power
clearances
electric potential
Clearance
Fault
Electric Power System
Switching frequency

ASJC Scopus subject areas

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Citar esto

Alepuz, S., Busquets-Monge, S., Bordonau, J., Cortés, P., Rodríguez, J., & Vargas, R. (2008). Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings (pp. 2423-2428). [4592304] https://doi.org/10.1109/PESC.2008.4592304
Alepuz, S. ; Busquets-Monge, S. ; Bordonau, J. ; Cortés, P. ; Rodríguez, J. ; Vargas, R. / Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements. PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. pp. 2423-2428
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Alepuz, S, Busquets-Monge, S, Bordonau, J, Cortés, P, Rodríguez, J & Vargas, R 2008, Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings., 4592304, pp. 2423-2428, PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference, Rhodes, Greece, 15/06/08. https://doi.org/10.1109/PESC.2008.4592304

Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements. / Alepuz, S.; Busquets-Monge, S.; Bordonau, J.; Cortés, P.; Rodríguez, J.; Vargas, R.

PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 2423-2428 4592304.

Resultado de la investigación: Conference contribution

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AU - Rodríguez, J.

AU - Vargas, R.

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AB - Due to the increase of the distributed power generation in recent years, power system operators have updated their grid connection requirements, in order to include distributed power generation plants operation in the transient operation control of the overall electric power system. Among them, Low Voltage Ride-Through requirements demand wind power plant to remain connected to the network in presence of grid voltage dips, contributing to keep network voltage and frequency stable. Wind power technology points to increase voltage levels. Hence, multilevel converters are well suited for this application. The use of symmetrical components to control grid-connected voltage-source converters is simple and effective, but a sequence separation method is needed, which delivers inexact response during a lapse of time after a fault appearance or clearance. This inaccurate response can be a significant drawback. Predictive current control presents similar dynamic response and reference tracking than other well established control methods, but working at lower switching frequencies. In this work, predictive current control is applied to the grid-side NPC converter, in order to fulfil LVRT requirements. Then, a sequence separation method is not needed and inaccuracies after grid fault appearance and clearance are removed from the system performance. Dc-link neutral point balance is also achieved by means of the predictive control algorithm, which considers the redundant switching states of the NPC. Simulation results confirm the validity of the proposed control approach.

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Alepuz S, Busquets-Monge S, Bordonau J, Cortés P, Rodríguez J, Vargas R. Predictive current control of grid-connected neutral-point-clamped converters to meet low voltage ride-through requirements. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 2423-2428. 4592304 https://doi.org/10.1109/PESC.2008.4592304