Simple Unified Approach to Develop a Time-Domain Modulation Strategy for Single-Phase Multilevel Converters

Leon, Jose I.; Portillo, R.; Vázquez, Sergio; Padilla, J.J.; Franquelo, Leopoldo G.; Carrasco, J.M.

doi:10.1109/tie.2008.928141

Cited by 94 publications

(50 citation statements)

References 29 publications

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“…This kind of modulator was proposed in [31] for single-phase 3L-NPC converter controlled in virtual synchronous rotating coordinate system. Then quasi SVM developed in [32][33] was applied for all kinds of multilevel converters and called one-dimensional modulation (1DM). Basic idea of this simple modulation come from three-phase two-level converters, where duty cycle of each phase can be calculated as u a_ref /u dc +T s /2, where u a_ref is reference voltage for modulator, u dc is DC link voltage, and T s is sampling time.…”

Section: Modulation Of Cmcmentioning

confidence: 99%

“…reference to the nearest output voltage levels and operator x f = floor(x) means round to the integer towards minus infinity (e.g. 1, 0, -1, -2 for five-level converter) [32]. Finally, x f algorithm determines switching sequence and duty cycles.…”

Section: Modulation Of Cmcmentioning

confidence: 99%

“…2), giving similar results as previously described multicarrier based hybrid modulation. A detailed description of 1DM can be found in [23,[31][32][33].…”

Section: Modulation Of Cmcmentioning

confidence: 99%

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Cascaded multilevel converters in recent research and applications

Malinowski

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Multilevel converters have been intensively investigated and developed since 1960s and have found successful industrial applications. The aim of this paper is to present state of the art as well as recent research and applications of cascaded multilevel converters, which are a very interesting solution for power distribution systems and renewable energy sources. Cascaded multilevel converters can easily operate at medium and high voltage based on the series connection of power modules (cells), which use standard low-voltage component configurations. Series connections of modules (cells) allow for high quality output voltages and input currents, reduction of passive components and availability of component redundancy. Due to these features the cascaded multilevel converters have been recognized as attractive solutions for high-voltage direct-current (HVDC) transmission, solid state transformers (SST) and photovoltaic (PV) systems.Key words: multilevel converters, cascaded converters, modular multilevel converters, modulation, solid state transformer, photovoltaic systems. Cascaded multilevel converters in recent research and applications M. MALINOWSKIInstitute of Control and Industrial Electronics, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland for multilevel structures. Among the main benefits one may count a superior harmonic spectrum for a given switching frequency, a lower dv/dt stress at the converter terminals, cables and end windings of transformers/generators, a lower common mode voltage, and substantially lower semiconductor switching losses, particularly at medium to higher switching frequencies. A three-level topology is also a highly competitive alternative to the two-level structure in terms of cost, efficiency, and weight/size [2].The final choice of converter topology for RES depends on type of application, expected power, reliability demand and price. Three-phase multilevel converters, e.g. three-level neutral point clamped (3L-NPC) [3][4][5][6], three-level transistor clamped (3L-TCC) [4] or five-level active neutral point clamped (5L-ANPC) [7][8][9] are most popular in high power applications. However, 3L-NPC converters may be considered even in power range of few hundreds kVA, which was discussed in [2].

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Section: Modulation Of Cmcmentioning

confidence: 99%

Section: Modulation Of Cmcmentioning

confidence: 99%

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Cascaded multilevel converters in recent research and applications

Malinowski

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…In this paper, a simple modulation technique is proposed considering the modulation concept introduced in [15], and called 1DM. The 1DM technique can be applied to any singlephase multilevel converter and only the final trigger signals depend on the multilevel converter topology.…”

Section: Proposed Modulator For the Single-phase 5l-anpc Convertermentioning

confidence: 99%

Simple modulator with voltage balancing control for the hybrid five-level flying-capacitor based ANPC converter

Leon

Franquelo

Kouro

et al. 2011

2011 IEEE International Symposium on Industrial Electronics

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Abstract-The hybrid flying-capacitor based active-neutralpoint-clamped converter is a recent multilevel converter topology with interesting properties such as high quality output voltage and easy extension to achieve a high number of levels with reduced number of power devices. The control of the flying capacitors of the three-phase converter has been previously carried out by an elaborate control technique taking advantage of the large number of redundant switching states. This paper is focused on the introduction of a simple single-phase modulator for the single-phase five-level hybrid flying-capacitor based activeneutral-point-clamped converter. The single-phase modulator can be applied to each phase of a three-phase converter without losing generality. Using this modulation technique, the dc-link capacitors and the floating capacitor voltages are controlled to their desired values. Simulation results show the good performance of the voltage control obtaining simultaneously high quality output voltages and currents.

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“…Recently, a single-phase multilevel modulator (called 1DM) has been introduced showing its conceptual simplicity and its very low computational cost [14]. The 1DM technique can be applied to any single-phase multilevel converter and only the final trigger signals depend on the multilevel converter topology.…”

Section: A Pulse Width Modulation and Space Vector Modulation Technimentioning

confidence: 99%

Recent advances in high-power industrial applications

Franquelo

Leon

Domínguez

2010

2010 IEEE International Symposium on Industrial Electronics

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Abstract-The industrial electronics market is continuously changing following the users demand. This paper introduces the current industrial electronics applications and is focused in the medium-voltage high-power ones. The multilevel approach is the most attractive solution to achieve the challenges that medium voltage-high power applications arise. Several commercial examples are introduced and some of the last research advances related to multilevel power electronic converters are presented in this paper.

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Simple Unified Approach to Develop a Time-Domain Modulation Strategy for Single-Phase Multilevel Converters

Cited by 94 publications

References 29 publications

Cascaded multilevel converters in recent research and applications

Cascaded multilevel converters in recent research and applications

Simple modulator with voltage balancing control for the hybrid five-level flying-capacitor based ANPC converter

Recent advances in high-power industrial applications

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