2009 35th Annual Conference of IEEE Industrial Electronics 2009
DOI: 10.1109/iecon.2009.5415004
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Abstract: This paper presents a new generalized solution for DC bus capacitors voltage balancing in back-to-back m level diode-clamped multilevel converters connecting AC networks. The solution is based on the DC bus average power flow and exploits the switching configuration redundancies. The proposed balancing solution is particularized for the back-toback multilevel structure with m=5 levels. This back-to-back converter is studied working with bidirectional power flow, connecting an induction machine to the power gri… Show more

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Cited by 4 publications
(5 citation statements)
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“…If the voltage on the upper capacitor is higher, then the space vector is chosen from the table which has the redundant vectors that will charge the lower capacitor and vice-versa. An observation about the similarities of the strategies presented in [14] and [3] reveals that the authors use the same principle, but although the strategy proposed [3] is characterized by presenting a processing with less complexity, the mitigation of the unbalance capacitor voltage in the presence of occurrence of fast wind dynamics is compromised.…”
Section: Introductionmentioning
confidence: 97%
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“…If the voltage on the upper capacitor is higher, then the space vector is chosen from the table which has the redundant vectors that will charge the lower capacitor and vice-versa. An observation about the similarities of the strategies presented in [14] and [3] reveals that the authors use the same principle, but although the strategy proposed [3] is characterized by presenting a processing with less complexity, the mitigation of the unbalance capacitor voltage in the presence of occurrence of fast wind dynamics is compromised.…”
Section: Introductionmentioning
confidence: 97%
“…A new method is presented in [14] by taken a convenient advantage of the redundant space and by the use of the DC average power flow direction. The strategy takes into consideration each capacitor voltage error, computed by the difference between the capacitors total voltage divided by the total number of capacitors and by the measured capacitor voltage.…”
Section: Introductionmentioning
confidence: 99%
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“…Using simplified control scheme based on SPWM [11] 6.6 kV transformerless BTB system using two fivelevel diode clamped PWM converters for motor drives SPWM with carrier frequency of 3 kHz and voltage balancing control of the common four dc capacitors connected in series using buck-boost choppers [49] DC voltage control strategy for a five-level converter Control circuit uses multiband hysteresis comparators to simplify the control of the main circuit [50] Balancing the DC capacitor voltage divider in backto-back multilevel converters A new method to balance dc bus capacitors voltages by exploiting the redundant space vectors and using the dc bus average power flow direction [51] Limits of the neutral-point balance in back-to-backconnected three-level converters Explorers the limitations of NP current control for balancing the voltage in 3-level NPC converters [52] NPP regulator reducing voltage and current harmonics along with the second harmonic.…”
Section: Y-applicable N-not Applicable -Applicable But Not Recommendedmentioning
confidence: 99%