Voltage-balance limits in four-level diode-clamped converters with passive front ends

Pou, Josep; Pindado, R.; Boroyevich, Dushan

doi:10.1109/iecon.2002.1185391

Cited by 26 publications

(50 citation statements)

References 7 publications

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“…The increasing number of redundancies makes difficult the design of a criterion to choose the most convenient redundant vector to control the voltage unbalance. In addition, sometimes the dc voltages balance in multilevel converters cannot be achieved depending on the modulation index and the power factor of the load [99].…”

Section: A Dc-link Voltage Balance For Npc Invertersmentioning

confidence: 99%

Multilevel Converters: An Enabling Technology for High-Power Applications

et al. 2009

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Multilevel converters are considered today as the state of the art power conversion systems for high power and power quality demanding applications. This paper presents a tutorial on this technology, covering the operating principles, the different power circuit topologies, modulation methods, technical issues and industry applications. Special attention is given to established technology already found in industry with more in depth and self-contained information, while recent advances and state of the art contributions are addressed with useful references. This paper serves as an introduction to the subject for the not familiarized reader, as well as an update or reference for academics and practicing engineers working in the field of industrial and power electronics.

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Section: A Dc-link Voltage Balance For Npc Invertersmentioning

confidence: 99%

Multilevel Converters: An Enabling Technology for High-Power Applications

et al. 2009

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“…However, full-bridge primarily based sub module structure is consisted of a capacitance and 4 IGBTs with anti-parallel diodes. One-way cell circuit structure is that the different one that is created a capacitance and one IGBT with anti-parallel diode for the face t |top |top side |upside| side face} otherwise just one diode while not IGBT for the lower side [4].…”

Section: General Aspects Of Modular Multi Level Convertorsmentioning

confidence: 99%

Transmission Congestion& Voltage Profile Management using Modular Multi Level UPFC

Malleswararao*,

Ramadas

2019

IJITEE

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Modular multi level convertor based UPFC (MMC-UPFC) has become one amongst the foremost rising convertor typologies for medium & high-powered applications. In the last years, outstanding researches are done concerning to Transmission congestion and voltage profile management victimization MMC-UPFC. Thus, standard construction convertor UPFC has been a major topic for each industrial applications and tutorial surveys. In this paper, an outline of the ability circuit analysis and operation principle of the standard construction of MMC-UPFC topology is mentioned. Totally different sub-module typologies are mentioned. Then, advantage sides of the MMC-UPFC which of application areas is reviewed. The proposed technique additional appropriate to avoids Transmission congestion & additionally for higher voltage profile management than previous ways, The proposed system used for MMC-UPFC better improvement of voltage profile and effective congestion relief also the entire function a promising answer for sensible applications, particularly once the quantity of sub-modules is fairly high. Simulation and experimental results verify the effectiveness of the proposed

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“…9 on the basis of the theoretical analysis. A global offset voltage select global offset (15)(16) ....…”

Section: Proposed Pwm Control Schemementioning

confidence: 99%

“…In the SVPWM method, the switching states in the switching sequences are selected after determining the three pivot vectors in the space vector diagram. The control process of the SVPWM is relatively complicated in a multilevel inverter [14], [15]. When the inverter level is high, the two main disadvantages of this PWM method are burden calculation and lookup table, both of which require large memory storage.…”

Section: Introductionmentioning

confidence: 99%

Switching Voltage Modeling and PWM Control in Multilevel Neutral-Point-Clamped Inverter under DC Voltage Imbalance

Nguyen¹,

Nguyen²,

Lee³

2015

Journal of Power Electronics

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This paper presents a novel switching voltage model and an offset-based pulse width modulation (PWM) scheme for multilevel inverters with unbalanced DC sources. The switching voltage model under a DC voltage imbalance will be formulated in general form for multilevel neutral-point-clamped topologies. Analysis of the reference switching voltages from active and non-active switching voltage components in abc coordinates can enable voltage implementation for an unbalanced DC-source condition. Offset voltage is introduced as an indispensable variable in the switching voltage model for multilevel voltage-source inverters. The PWM performance is controlled through the design of two offset components in a subsequence. One main offset may refer to the common mode voltage, and the other offset restricts its effect on the quality of PWM control in related DC levels. The PWM quality can be improved as the switching loss is reduced in a discontinuous PWM mode by setting the local offset, which is related to the load currents. The validity of the proposed algorithm is verified by experimental results.

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Voltage-balance limits in four-level diode-clamped converters with passive front ends

Cited by 26 publications

References 7 publications

Multilevel Converters: An Enabling Technology for High-Power Applications

Multilevel Converters: An Enabling Technology for High-Power Applications

Transmission Congestion& Voltage Profile Management using Modular Multi Level UPFC

Switching Voltage Modeling and PWM Control in Multilevel Neutral-Point-Clamped Inverter under DC Voltage Imbalance

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