Three-phase NPC inverter using three-phase coupled inductor

Hausmann, Romeu; Silva, Rodrigo da; Barbi, I.

doi:10.1109/iecon.2009.5415040

Cited by 17 publications

(5 citation statements)

References 7 publications

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“…The total RMS value of the output voltage V AO for the 5L-NPC-MSSC inverter is given by (7). The waveform of this voltage is identical to that of the equivalent output voltage for the 5L-NPC-IC inverter.…”

Section: Total Harmonic Distortionmentioning

confidence: 99%

“…The interleaved converters with magnetic coupling, are found in the technical literature in two forms: interleaved converters with coupled inductors [6][7][8] and interleaved converters using magnetically coupled cells via an autotransformer ("Intercell Transformer" -ICT) [9,10]. The analysis of the NPC-MSSC topology using an autotransformer was performed [11].…”

Section: Introductionmentioning

confidence: 99%

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Comparative evaluation of three single-phase NPC inverters

Neto

Bascope

Cruz

et al. 2012

2012 10th IEEE/IAS International Conference on Industry Applications

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In this paper is presented a comparative evaluation in steady-state of three single-phase NPC multilevel inverters. The first is a five-level neutral point clamped (NPC) inverter based on multi-stage switching cell (MSSC); the second is also a five-level neutral point clamped (NPC) inverter based on interleaved cell (IC); and the third is a three-level neutral point clamped (NPC) inverter based on paralleled cell (PC). For this comparative purpose, the switching frequency is constant and the evaluated parameters are the volume of the heatsinks and the passive components, the total harmonic distortion (THD) of the output voltage, the power density and efficiency of each topology. Theoretical analyses, as well as simulation and experimental results obtained from 5kW prototype are presented.

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Section: Total Harmonic Distortionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of three single-phase NPC inverters

Neto

Bascope

Cruz

et al. 2012

2012 10th IEEE/IAS International Conference on Industry Applications

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show abstract

“…One of the most popular converter topologies is the three-level neutral-point-clamped (NPC) inverter [6], [8]. Since the trend is toward using a greater number of voltage levels due to benefits of higher voltage ratings, lower electrical stresses with a very low total harmonic distortion, one of the viable topologies is the 24-switch five-level NPC or fivelevel NPC/H-bridge topologies [2], [9].…”

Section: Introductionmentioning

confidence: 99%

Multicarrier Interleaved PWM Strategies for a Five-Level NPC Inverter Using a Three-Phase Coupled Inductor

Vafakhah

Ewanchuk

Salmon

2011

IEEE Trans. on Ind. Applicat.

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Multicarrier interleaved pulsewidth modulation (PWM) techniques are presented for a five-level neutral point clamped inverter using a three-phase coupled inductor. The inverter operation is demonstrated using a simple multicarrier interleaved PWM algorithm. Since both the inverter and inductor power losses are closely linked to the magnitude of the inductor current ripple, improved multilevel interleaved PWM techniques are presented based upon the concept of interchangeability of switching states in each phase. The proposed PWM techniques, which are easier to implement when compared to multilevel space-vector PWM techniques, also exploit the use of switching states with a high-effective winding inductance to minimize the inductor current ripple. Simulation results are presented to illustrate the improvements obtained in the inverter waveforms and their harmonic spectrum. Experimental results demonstrate how the inductor current ripple and the related power losses are significantly reduced using the proposed PWM scheme. Index Terms-Coupled inductor inverter (CII), multicarrier pulsewidth modulation (PWM), multilevel interleaved PWM, multilevel inverter, neutral-point-clamped (NPC) inverter.

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“…Para aplicações de alta corrente, várias técnicas têm sido introduzidas na literatura com o objetivo de elevar a capacidade de corrente dos conversores, entre as quais se pode destacar a técnica de intercalamento que se fundamenta na conexão paralela de conversores que operam de forma sincronizada e complementar, conectados à mesma carga e alimentados a partir da mesma fonte. Os conversores intercalados com acoplamento magnético são encontrados na literatura técnica sob duas formas: conversores intercalados com indutores acoplados [6][7][8] e conversores intercalados que utilizam células acopladas magneticamente através de um autotransformador (transformador de interfase) [9,10].…”

Section: Introductionunclassified

Análise Comparativa De Inversores Multiníveis Monofásicos Baseados Em Células De Comutação

Neto¹,

Bascope²,

Cruz³

2013

Revista Eletrônica de Potência

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Resumo Este artigo apresenta a análise comparativa para operação em regime permanente de três inversores multiníveis monofásicos, com grampeamento do ponto neutro (NPC Neutral Point Clamped), baseados em células de comutação. O primeiro é um inversor NPC de cinco níveis baseado em células de comutação de múltiplos estados (CCME); o segundo também é um inversor NPC de cinco níveis baseado em células de comutação intercaladas (CCI) e o terceiro é um inversor NPC de três níveis baseado no paralelismo de células de comutação (PCC). Para esta análise, a freqüência de comutação é mantida constante e os parâmetros avaliados são o volume dos dissipadores e dos componentes passivos, a Distorção Harmônica Total DHT da tensão de saída, a densidade de potência e o rendimento de cada topologia. São apresentados resultados da análise teórica, assim como resultados experimentais obtidos a partir de protótipos de 5 kW.

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Three-phase NPC inverter using three-phase coupled inductor

Cited by 17 publications

References 7 publications

Comparative evaluation of three single-phase NPC inverters

Comparative evaluation of three single-phase NPC inverters

Multicarrier Interleaved PWM Strategies for a Five-Level NPC Inverter Using a Three-Phase Coupled Inductor

Análise Comparativa De Inversores Multiníveis Monofásicos Baseados Em Células De Comutação

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