Modified staircase modulation with low input current distortion for multicell converters

Marcelo Pérez, Samir Kouro, José Rodríguez, Bin Wu

Resultado de la investigación: Conference contribution

19 Citas (Scopus)

Resumen

Cascaded H Bridge Multilevel Inverters are traditionally controlled using Phase Shifted PWM. This method allows an even power distribution among the different cells of the converter, which enables input current harmonic cancelations due to the isolation multipulse transformer and rectifier system. For high power applications a selective harmonic elimination based method, also known as staircase modulation, has been proposed. This method is devised to reduce switching losses to a minimum, improving the efficiency of the converter. The switching angles are calculated to eliminate low order harmonics at the output voltage. However, this method does not provide even power distribution among the cells, avoiding the input current harmonic cancelation. This work proposes a redistribution of the switching angles between the cells, maintaining the overall switching pattern of the staircase modulation. The methods maintains the harmonic elimination characteristic at the output voltage, while improving the power distribution and consequently the input current harmonic performance. Mathematical analysis and simulation results are presented to support the strategy.

Idioma originalEnglish
Título de la publicación alojadaPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
Páginas1989-1994
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

stairways
Converter
converters
Modulation
Harmonic
harmonics
modulation
Power Distribution
Cancellation
cancellation
Elimination
elimination
Cell
Electric potential
cells
Voltage
Pulse width modulation
Angle
inverters
applications of mathematics

ASJC Scopus subject areas

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

Citar esto

Pérez, M., Kouro, S., Rodríguez, J., & Wu, B. (2008). Modified staircase modulation with low input current distortion for multicell converters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings (pp. 1989-1994). [4592235] https://doi.org/10.1109/PESC.2008.4592235
Pérez, Marcelo ; Kouro, Samir ; Rodríguez, José ; Wu, Bin. / Modified staircase modulation with low input current distortion for multicell converters. PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. pp. 1989-1994
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abstract = "Cascaded H Bridge Multilevel Inverters are traditionally controlled using Phase Shifted PWM. This method allows an even power distribution among the different cells of the converter, which enables input current harmonic cancelations due to the isolation multipulse transformer and rectifier system. For high power applications a selective harmonic elimination based method, also known as staircase modulation, has been proposed. This method is devised to reduce switching losses to a minimum, improving the efficiency of the converter. The switching angles are calculated to eliminate low order harmonics at the output voltage. However, this method does not provide even power distribution among the cells, avoiding the input current harmonic cancelation. This work proposes a redistribution of the switching angles between the cells, maintaining the overall switching pattern of the staircase modulation. The methods maintains the harmonic elimination characteristic at the output voltage, while improving the power distribution and consequently the input current harmonic performance. Mathematical analysis and simulation results are presented to support the strategy.",
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Pérez, M, Kouro, S, Rodríguez, J & Wu, B 2008, Modified staircase modulation with low input current distortion for multicell converters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings., 4592235, pp. 1989-1994, PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference, Rhodes, Greece, 15/06/08. https://doi.org/10.1109/PESC.2008.4592235

Modified staircase modulation with low input current distortion for multicell converters. / Pérez, Marcelo; Kouro, Samir; Rodríguez, José; Wu, Bin.

PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 1989-1994 4592235.

Resultado de la investigación: Conference contribution

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AU - Kouro, Samir

AU - Rodríguez, José

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N2 - Cascaded H Bridge Multilevel Inverters are traditionally controlled using Phase Shifted PWM. This method allows an even power distribution among the different cells of the converter, which enables input current harmonic cancelations due to the isolation multipulse transformer and rectifier system. For high power applications a selective harmonic elimination based method, also known as staircase modulation, has been proposed. This method is devised to reduce switching losses to a minimum, improving the efficiency of the converter. The switching angles are calculated to eliminate low order harmonics at the output voltage. However, this method does not provide even power distribution among the cells, avoiding the input current harmonic cancelation. This work proposes a redistribution of the switching angles between the cells, maintaining the overall switching pattern of the staircase modulation. The methods maintains the harmonic elimination characteristic at the output voltage, while improving the power distribution and consequently the input current harmonic performance. Mathematical analysis and simulation results are presented to support the strategy.

AB - Cascaded H Bridge Multilevel Inverters are traditionally controlled using Phase Shifted PWM. This method allows an even power distribution among the different cells of the converter, which enables input current harmonic cancelations due to the isolation multipulse transformer and rectifier system. For high power applications a selective harmonic elimination based method, also known as staircase modulation, has been proposed. This method is devised to reduce switching losses to a minimum, improving the efficiency of the converter. The switching angles are calculated to eliminate low order harmonics at the output voltage. However, this method does not provide even power distribution among the cells, avoiding the input current harmonic cancelation. This work proposes a redistribution of the switching angles between the cells, maintaining the overall switching pattern of the staircase modulation. The methods maintains the harmonic elimination characteristic at the output voltage, while improving the power distribution and consequently the input current harmonic performance. Mathematical analysis and simulation results are presented to support the strategy.

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Pérez M, Kouro S, Rodríguez J, Wu B. Modified staircase modulation with low input current distortion for multicell converters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 1989-1994. 4592235 https://doi.org/10.1109/PESC.2008.4592235