A novel and reliable modulation strategy for active neutral-point clamped five-level converter

Yang, Jiatao; Yang, Sijia; Li, Rui

doi:10.1109/ifeec.2017.7992205

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…Moreover, the additional control circuits required in both methods will increase the calculations and costs, and the control difficulty will surge with the increase of the converter level. For the high voltage leaps problem in the switching of the traditional 5L‐ANPC, 17 added some devices to the traditional topology and avoided the phase voltage leaps by changing the switching sequence, thus achieving the elimination of the dead time; A complete 5L‐ANPC control strategy was proposed in Yang et al, 18 but in order to achieve the goal, both propose to use too many new redundant switching states, which undoubtedly increase the subsequent control complexity. For the floating capacitor voltage fluctuation and DC bus midpoint voltage unbalance problems, conventional methods are mentioned in 19 .…”

Section: Introductionmentioning

confidence: 99%

Improved self‐balancing voltage five‐level ANPC converter and its control strategy

Liu,

Li,

Yang

et al. 2023

Circuit Theory & Apps

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SummaryFive‐level active neutral‐point‐clamped (5L‐ANPC) converters have great practical potential in the field of medium and high voltage variable frequency speed regulation. However, the dynamic and static voltage imbalance of the series IGBTs may cause permanent damage to the device, which limits its popularization and application. In this paper, an improved self‐balancing voltage 5L‐ANPC topology (ISBV‐5L‐ANPC) is proposed to address such voltage balancing problem as series switches and high voltage leaps, which realizes dynamic and static voltage equalization by connecting the self‐balancing module consisting of an auxiliary capacitor to the bridge arm, so that it clamps the series switches. In this paper, the operation principle of ISBV‐5L‐ANPC is given in detail, and the control strategy of ISBV‐5L‐ANPC is proposed, and the key parameters in the topology are analyzed and designed. Finally, an ISBV‐5L‐ANPC prototype was built, and the effectiveness of the proposed topology and the feasibility of the control strategy are verified through the experimental results.

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Section: Introductionmentioning

confidence: 99%

Improved self‐balancing voltage five‐level ANPC converter and its control strategy

Liu,

Li,

Yang

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Document [24] analyzes the operation state of inverters based on space vector pulse-width modulation, including 125 vector combinations, and limits the stress of the switching devices by using the safe switching state switching process. Meanwhile, under the conventional modulation scheme, the analyzed inverter has the security risk of overvoltage in the power device when switching to dead time at the zero-crossing point of voltage when the output current is inductive, which affects the commutation safety [25].…”

Section: Introductionmentioning

confidence: 99%

A Modified Modulation Strategy for an Active Neutral-Point-Clamped Five-Level Converter in a 1500 V PV System

Chen

Yang

2022

Electronics

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With the development of 1500 V photovoltaic (PV) systems in recent decades, multilevel inverters such as the five-level inverter have gained much attention for their higher equivalent output frequency and low semiconductor devices’ voltage stress. Among five-level inverters, the active neutral-point-clamped five-level (ANPC-5L) inverter is very competitive due to its simple structure and control methods. However, with its conventional commutation strategy, the topology of the ANPC five-level converter has the security risk of overvoltage in the power device when switching to dead time under special conditions, which affects the reliability and safety of the switch state switching process. In this paper, this issue is analyzed in detail and a modified commutation strategy is proposed. Meanwhile, a novel soft start-up method adopted to an ANPC-5L inverter is also proposed. A prototype is also set up to analyze the issue of traditional switching commutation strategies and to verify the effectiveness of the proposed commutation strategy and the soft start-up method.

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Sliding Mode Control of Six-Switch Five-Level Active Neutral Point Clamped (6S-5L-ANPC)

El-Alami

Kazi²,

Baraka³

et al. 2022

Communications in Computer and Information Science

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A novel and reliable modulation strategy for active neutral-point clamped five-level converter

Cited by 8 publications

References 8 publications

Improved self‐balancing voltage five‐level ANPC converter and its control strategy

Improved self‐balancing voltage five‐level ANPC converter and its control strategy

A Modified Modulation Strategy for an Active Neutral-Point-Clamped Five-Level Converter in a 1500 V PV System

Sliding Mode Control of Six-Switch Five-Level Active Neutral Point Clamped (6S-5L-ANPC)

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