Three-phase five-level active-neutral-point-clamped converters for medium voltage applications

Soeiro, Thiago Batista; Carballo, Roberto; Moia, Joabel; García, Guillermo; Heldwein, Marcelo Lobo

doi:10.1109/cobep.2013.6785099

Cited by 33 publications

(10 citation statements)

References 13 publications

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“…Active-neutral-point-clamped (ANPC) which is one of the multilevel topology has been proposed in Refs [11][12][13][14][15]. Three 5L-ANPC topologies are shown in Fig.1.…”

Section: Introductionmentioning

confidence: 99%

Seven-switch five-level active neutral-point clamped converter and optimal modulation strategy

Wang

Kou

Liu

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The five-level active-neutral-point-clamped (ANPC) converters are newly hybrid topologies which have the advantages of traditional neutral-point-clamped (NPC) and flying-capacitor (FC) multilevel converters. A novel sevenswitch five-level ANPC (7S-5L-ANPC) inverter topology is proposed, which reduces the number of active semiconductor switches over traditional 5L-ANPC inverter topologies. It is capable of operating under any power factor conditions. The special modulation strategy for 7S-5L-ANPC is proposed and simulation shows only reactive current is flowing through the seventh switch. Thus, low current rating switch can be selected for the seventh switch. The proposed 7S-5L-ANPC inverter is very suitable for unity and high power factor applications such as photovoltaic (PV) application. A 1KW single-phase inverter prototype is built to verify the validity and flexibility of the proposed topology and modulation.

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“…Active-neutral-point-clamped (ANPC) which is one of the multilevel topology has been proposed in Refs [11][12][13][14][15]. Three 5L-ANPC topologies are shown in Fig.1.…”

Section: Introductionmentioning

confidence: 99%

Seven-switch five-level active neutral-point clamped converter and optimal modulation strategy

Wang

Kou

Liu

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…This makes the system more bulky and expensive [2], [3]. Likewise, a more complex control scheme is required to balance the voltage of each capacitor in the higher-level FC type topologies [5], [6] and [13].…”

Section: Introductionmentioning

confidence: 99%

“…), which reduces the dc-link voltage requirement to half of the conventional 5L-NPC and 5L-FC family, whilst reducing both active and passive components. - [5], [9], (b) 5L-FC [5]- [7], (c) Cascaded H-Bridge [3], [8], [11] , (d) 5L-ANPC type-II [4], [13], (e) 5L-NPC Type-III [4], [13], (f) 5L-Six Switch ANPC [4], (g) 5L-NNPC [17], and (h) 5L-HC [18]. Here x ∈ (R, Y, B) phases.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Novel Six-Switch Five-Level Active Boost Neutral Point Clamped Inverter

Siwakoti

Palanisamy

Mahajan

et al. 2020

IEEE Trans. Ind. Electron.

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This paper presents an analysis and design of a new boost type six-switch five-level Active Neutral Point Clamped (ANPC) inverter based on switched/flying capacitor technique with self-voltage balancing. Compared to major conventional 5-level inverter topologies, such as, Neutral Point Clamped (NPC), Flying Capacitor (FC), Cascaded Hbridge (CHB) and Active NPC (ANPC) topologies, the new topology reduces the dc-link voltage requirement by 50%. Whilst reducing the dc-link voltage requirement, the number and the size of the active and passive components are also reduced without compromising the reactive power capability. The analysis shows that the proposed topology is suitable for wide range of power conversion applications (for example, rolling mills, fans, pumps, marine appliances, mining, tractions, and most prominently grid-connected renewable energy systems). Experimental results from a 1.2-kVA prototype justifies the concept of the proposed inverter with a conversion efficiency of around 97.5% ± 1% for a wide load range.

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“…To overcome the drawbacks of traditional T-type converters, various topologies are introduced in the literatures [9][10][11][12][13]. Structures presented in [9][10][11][12] require number of capacitors and switches. Moreover, maximum voltage obtained in [9,11] is half of the supply voltage (0.5V dc ).…”

Section: Introductionmentioning

confidence: 99%

“…To overcome the drawbacks of traditional T‐type converters, various topologies are introduced in the literatures [9–13]. Structures presented in [9–12] require number of capacitors and switches.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a novel nine‐level MT‐MLI with a self‐voltage‐balancing switching technique

Naik

Suresh

Venkataramanaiah

et al. 2019

IET Power Electronics

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In this study, a novel nine-level modified T-type multilevel inverter (MT-MLI) with a simple capacitor balancing technique is proposed. The proposed MT-MLI circuit can generate higher levels with a single DC source and the minimum number of switching components. Each phase of the proposed topology contains ten switches and one flying capacitor (FC). The DC source voltage is divided into two parts with the help of capacitors. Phase disposition-sine pulse-width modulation technique is employed to regulate the DC-link capacitors and FC voltages. To reduce the control complexity of FC-based circuits, quarter-cycle selector is introduced to control the FC voltage within the given half fundamental cycle using redundant states, so an external capacitor charging setup is not required. Furthermore, to highlight the potential merits of the proposed MT-MLI, the comparison is made among state-of-the-art MLIs. Simulation verification of the MT-MLI is done using MATLAB/ Simulink, and then hardware verifications are done using the laboratory prototype setup with Opal-RT controller. Finally, adequate results are presented to validate the proposed MT-MLI. Fig. 1 Similar configuration for DC-AC conversion with two controlled switches, which are connected in a bidirectional way

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Three-phase five-level active-neutral-point-clamped converters for medium voltage applications

Cited by 33 publications

References 13 publications

Seven-switch five-level active neutral-point clamped converter and optimal modulation strategy

Seven-switch five-level active neutral-point clamped converter and optimal modulation strategy

Analysis and Design of a Novel Six-Switch Five-Level Active Boost Neutral Point Clamped Inverter

Design and implementation of a novel nine‐level MT‐MLI with a self‐voltage‐balancing switching technique

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