Predictive control of a three-phase neutral point clamped inverter

J. Rodríguez, J. Pontt, P. Cortés, R. Vargas

Resultado de la investigación: Conference contribution

30 Citas (Scopus)

Resumen

A new predictive strategy for current control of a three-phase neutral point clamped inverter is presented. It is based on a discrete-time model of the system, used to predict future values of the load current and voltage of the capacitors in the DC-link, for each possible switching state generated by the inverter. The state that minimizes a given quality function "g" is selected to be applied during the next sampling interval. Several compositions of g are proposed, including terms dedicated to achieve reference tracking, balance in the DC-link and reduction of the switching frequency. The algorithm uses the redundancy of switching states, typical of a three-level inverter, by means of a simple strategy. In comparison with classic PWM current control, the strategy presents a remarkable performance. The proposed method achieves comparable reference tracking with lower switching frequency per semiconductor and a slightly improved transitory behavior. It requires a greater sampling frequency, which should not be a problem, considering the present technologies available in digital signal processors. The main advantage of the method is that it does not require any kind of linear controller or modulation technique, achieving a different approach to control a power converter.

Idioma originalEnglish
Título de la publicación alojada36th IEEE Power Electronics Specialists Conference 2005
Páginas1364-1369
Número de páginas6
Volumen2005
DOI
EstadoPublished - 2005

Huella dactilar

Predictive Control
Inverter
Electric current control
Switching frequency
Sampling
Digital signal processors
Power converters
Pulse width modulation
Redundancy
Capacitors
direct current
sampling
Modulation
Semiconductor materials
power converters
Digital Signal Processor
Power Converter
Controllers
pulse duration modulation
Discrete-time Model

ASJC Scopus subject areas

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

Citar esto

Rodríguez, J., Pontt, J., Cortés, P., & Vargas, R. (2005). Predictive control of a three-phase neutral point clamped inverter. En 36th IEEE Power Electronics Specialists Conference 2005 (Vol. 2005, pp. 1364-1369). [1581807] https://doi.org/10.1109/PESC.2005.1581807
Rodríguez, J. ; Pontt, J. ; Cortés, P. ; Vargas, R. / Predictive control of a three-phase neutral point clamped inverter. 36th IEEE Power Electronics Specialists Conference 2005. Vol. 2005 2005. pp. 1364-1369
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Rodríguez, J, Pontt, J, Cortés, P & Vargas, R 2005, Predictive control of a three-phase neutral point clamped inverter. En 36th IEEE Power Electronics Specialists Conference 2005. vol. 2005, 1581807, pp. 1364-1369. https://doi.org/10.1109/PESC.2005.1581807

Predictive control of a three-phase neutral point clamped inverter. / Rodríguez, J.; Pontt, J.; Cortés, P.; Vargas, R.

36th IEEE Power Electronics Specialists Conference 2005. Vol. 2005 2005. p. 1364-1369 1581807.

Resultado de la investigación: Conference contribution

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AB - A new predictive strategy for current control of a three-phase neutral point clamped inverter is presented. It is based on a discrete-time model of the system, used to predict future values of the load current and voltage of the capacitors in the DC-link, for each possible switching state generated by the inverter. The state that minimizes a given quality function "g" is selected to be applied during the next sampling interval. Several compositions of g are proposed, including terms dedicated to achieve reference tracking, balance in the DC-link and reduction of the switching frequency. The algorithm uses the redundancy of switching states, typical of a three-level inverter, by means of a simple strategy. In comparison with classic PWM current control, the strategy presents a remarkable performance. The proposed method achieves comparable reference tracking with lower switching frequency per semiconductor and a slightly improved transitory behavior. It requires a greater sampling frequency, which should not be a problem, considering the present technologies available in digital signal processors. The main advantage of the method is that it does not require any kind of linear controller or modulation technique, achieving a different approach to control a power converter.

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Rodríguez J, Pontt J, Cortés P, Vargas R. Predictive control of a three-phase neutral point clamped inverter. En 36th IEEE Power Electronics Specialists Conference 2005. Vol. 2005. 2005. p. 1364-1369. 1581807 https://doi.org/10.1109/PESC.2005.1581807