Title:
METHOD FOR CONTROLLING THE VOLTAGE BALANCE OF THE CAPACITORS OF THE DC BUS IN MULTILEVEL POWER CONVERTERS
Document Type and Number:
WIPO Patent Application WO/2013/087959
Kind Code:
A3
Abstract:
Method for controlling the voltage balance of the capacitors of the DC bus in multilevel power converters, which method is based on the time-division switching of the gamma component of the averaged control signal of the switches in the converter and is characterized by the division of the sampling period of the voltage differences of the capacitors into two subintervals in which the gamma component adopts a particular constant value in each of said subintervals, with the constant application values being selected from a table containing pairs of predetermined control values, according to the signs of the voltage differences; wherein the criterion for selecting these constant values is determined by the effect produced by the values on the net variations of the voltage differences of the capacitors throughout a sampling period, giving rise to a series of regions in the value space of the control signal.
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Inventors:
UMBRIA JIMENEZ FRANCISCO (ES)
GOMEZ-ESTERN AGUILAR FABIO (ES)
GORDILLO ALVAREZ FRANCISCO (ES)
SALAS GOMEZ FRANCISCO (ES)
ARACIL SANTONJA JAVIER (ES)
GOMEZ-ESTERN AGUILAR FABIO (ES)
GORDILLO ALVAREZ FRANCISCO (ES)
SALAS GOMEZ FRANCISCO (ES)
ARACIL SANTONJA JAVIER (ES)
Application Number:
PCT/ES2012/000314
Publication Date:
August 08, 2013
Filing Date:
December 14, 2012
Export Citation:
Assignee:
UNIV SEVILLA (ES)
International Classes:
H02M7/487
Foreign References:
| US6031738A | 2000-02-29 |
Other References:
UMBRIA, F. ET AL.: "Voltages balance control in three phase three-level NPC rectifiers", INDUSTRIAL ELECTRONICS (ISIE), 2010 IEEE INTERNATIONAL SYMPOSIUM ON, 7 July 2010 (2010-07-07), pages 3018 - 3023, XP031803233
VICTOR MANUEL MINAMBRES MARCOS ET AL.: "Analisis from Tension del Bus of Continua and su Equilibrado in Topologias Cooperativas basadas in Convertidores Multinivel", SEMINARIO ANUAL OF AUTOMATICA, ELECTRONICA INDUSTRIAL E INSTRUMENTACION 2011. ACTAS CONGRESO, 31 July 2011 (2011-07-31), BADAJOZ, SPAIN.
VICTOR MANUEL MINAMBRES MARCOS ET AL.: "Analisis from Tension del Bus of Continua and su Equilibrado in Topologias Cooperativas basadas in Convertidores Multinivel", SEMINARIO ANUAL OF AUTOMATICA, ELECTRONICA INDUSTRIAL E INSTRUMENTACION 2011. ACTAS CONGRESO, 31 July 2011 (2011-07-31), BADAJOZ, SPAIN.
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