A novel digital modulation scheme for multilevel cascaded H-bridge inverters

Mouzhi Dong, Bin Wu, Navid Zargari, Jose Rodriguez

Resultado de la investigación: Conference contribution

10 Citas (Scopus)

Resumen

The multilevel cascaded H-bridge (CHB) inverters are widely used in megawatt variable speed drives, where the voltage level normally varies from seven to thirteen and the number of active switching devices used in the inverter is in the range of 36 to 72. The design of a simple modulation scheme for such inverters with superior harmonic performance is a challenging task. This paper presents a novel digital multilevel modulation (DMM) scheme for multilevel CHB inverters. This scheme is very simple and easy to implement. DMM scheme switching and conduction losses are evenly distributed among individual H-bridges. To generate gate signals for all the active switches in the inverter, the scheme needs only to calculate a three-phase sine function once in each sampling period followed by distributing gating pulses to all the switches in the inverter. In this paper, the principle of the proposed modulation scheme is elaborated and its harmonic performance is analyzed. Comparisons are carried out between the DMM scheme and carrier based modulation schemes including phase-shifted and level-shifted modulations. It is demonstrated that the harmonic performance of the DMM scheme is on par with the best of carrier based modulation techniques.

Idioma originalEnglish
Título de la publicación alojadaPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
Páginas1675-1680
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

inverters
Modulation
modulation
Inverter
Harmonic
harmonics
Switch
switches
Switches
Variable speed drives
distributing
Conduction
Voltage
sampling
Vary
Sampling
Calculate
conduction

ASJC Scopus subject areas

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

Citar esto

Dong, M., Wu, B., Zargari, N., & Rodriguez, J. (2008). A novel digital modulation scheme for multilevel cascaded H-bridge inverters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings (pp. 1675-1680). [4592182] https://doi.org/10.1109/PESC.2008.4592182
Dong, Mouzhi ; Wu, Bin ; Zargari, Navid ; Rodriguez, Jose. / A novel digital modulation scheme for multilevel cascaded H-bridge inverters. PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. pp. 1675-1680
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abstract = "The multilevel cascaded H-bridge (CHB) inverters are widely used in megawatt variable speed drives, where the voltage level normally varies from seven to thirteen and the number of active switching devices used in the inverter is in the range of 36 to 72. The design of a simple modulation scheme for such inverters with superior harmonic performance is a challenging task. This paper presents a novel digital multilevel modulation (DMM) scheme for multilevel CHB inverters. This scheme is very simple and easy to implement. DMM scheme switching and conduction losses are evenly distributed among individual H-bridges. To generate gate signals for all the active switches in the inverter, the scheme needs only to calculate a three-phase sine function once in each sampling period followed by distributing gating pulses to all the switches in the inverter. In this paper, the principle of the proposed modulation scheme is elaborated and its harmonic performance is analyzed. Comparisons are carried out between the DMM scheme and carrier based modulation schemes including phase-shifted and level-shifted modulations. It is demonstrated that the harmonic performance of the DMM scheme is on par with the best of carrier based modulation techniques.",
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Dong, M, Wu, B, Zargari, N & Rodriguez, J 2008, A novel digital modulation scheme for multilevel cascaded H-bridge inverters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings., 4592182, pp. 1675-1680, PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference, Rhodes, Greece, 15/06/08. https://doi.org/10.1109/PESC.2008.4592182

A novel digital modulation scheme for multilevel cascaded H-bridge inverters. / Dong, Mouzhi; Wu, Bin; Zargari, Navid; Rodriguez, Jose.

PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 1675-1680 4592182.

Resultado de la investigación: Conference contribution

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AB - The multilevel cascaded H-bridge (CHB) inverters are widely used in megawatt variable speed drives, where the voltage level normally varies from seven to thirteen and the number of active switching devices used in the inverter is in the range of 36 to 72. The design of a simple modulation scheme for such inverters with superior harmonic performance is a challenging task. This paper presents a novel digital multilevel modulation (DMM) scheme for multilevel CHB inverters. This scheme is very simple and easy to implement. DMM scheme switching and conduction losses are evenly distributed among individual H-bridges. To generate gate signals for all the active switches in the inverter, the scheme needs only to calculate a three-phase sine function once in each sampling period followed by distributing gating pulses to all the switches in the inverter. In this paper, the principle of the proposed modulation scheme is elaborated and its harmonic performance is analyzed. Comparisons are carried out between the DMM scheme and carrier based modulation schemes including phase-shifted and level-shifted modulations. It is demonstrated that the harmonic performance of the DMM scheme is on par with the best of carrier based modulation techniques.

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Dong M, Wu B, Zargari N, Rodriguez J. A novel digital modulation scheme for multilevel cascaded H-bridge inverters. En PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings. 2008. p. 1675-1680. 4592182 https://doi.org/10.1109/PESC.2008.4592182