A new modulation strategy for capacitor voltage balancing in three-level NPC inverters based on matrix converter theory

Saengseethong, Apichart; Sangwongwanich, Somboon

doi:10.1109/ipec.2010.5543689

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…The carrier-based modulation technique of three-level inverters is different from that of two-level inverters at which two sets of the carrier wave and reference voltage are compared [27] and is called carrier-based dipolar modulation. The concept of this modulation is extended to generate the switching signals for three-phase three-level inverters [28]- [30].…”

Section: Concept Of Carrier-based Dipolar Modulationmentioning

confidence: 99%

Novel ripple reduction method using three-level inverters with unipolar PWM

Kiatsookkanatorn

Watjanatepin

2021

IJEECS

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This paper proposes a novel method to reduce voltage and current ripple for the inverters by using three-level inverters with unipolar pulse width modulation (PWM) (3LFB-2U). A simple technique of switching signal generation by using carrier-based dipolar modulation of three-phase three-level inverters is extended to single-phase inverters that can be done by generating all possible switching patterns of the single-phase three-level inverters. Moreover, the concept of carrier-based dipolar modulation and the construction of reference voltages from desired output voltage and added zero voltage to control unipolar switching is also shown. The research results reveal that the proposed method can reduce the voltage and current ripple. Furthermore, the voltage and current harmonics can reduce by 27.80% and 1.79%, respectively less than two-level inverters without a loss of a simple modulation to generate the switching signals.

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Section: Concept Of Carrier-based Dipolar Modulationmentioning

confidence: 99%

Novel ripple reduction method using three-level inverters with unipolar PWM

Kiatsookkanatorn

Watjanatepin

2021

IJEECS

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“…As shown in [8], most SVM methods can be realized by CBM if the corresponding zero voltages are known. The limitation on the neutral-point voltage balancing in [4] is eliminated in [9] and [10], and the number of branch switch overs (BSOs) in [10] is only 6. In all of the aforementioned research, attention has been paid mainly to the output voltage generation along with the neutral-point voltage balancing, while the input current ripple in DC link capacitors is rarely considered and may be of a high level. The current ripple is a significant factor affecting the lifetime and reliability of capacitors [11], [12].…”

Section: Introductionmentioning

confidence: 99%

New Switching Patterns Based on Current Space-Vector Diagram Viewpoint to Reduce Input Current Ripple for Three-Level Inverters

Sangsuwan

Kiatsookkanatorn

Sangwongwanich

et al. 2022

2022 25th International Conference on Electrical Machines and Systems (ICEMS)

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From the current space-vector diagram viewpoint, this paper proposes new switching patterns which reduce the input current ripple in DC link capacitors by considering the three-level inverter as a special case of a matrix converter. Several modulation concepts of the matrix converter are applied to the three-level inverter. Comparison among several modulation methods reveals that the lowest input current ripple can be achieved by the proposed PWM method without loss of neutral-point voltage balancing and limitation on the modulation index.

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“…Although many papers show experimental results, fewer paper deals specifically with the design of matrix converter (Xie and Ren, 2004;Sokolovs and Galkin, 2008;Klumpner et al, 2002;Wheeler et al, 2004;Saengseethong and Sangwongwanich, 2010;Mohite and Gujarathi, 2010). Usually these papers cover some design aspects of the matrix converter but other aspects are not treated deeply to give enough information of how to build a matrix converter in detail.…”

Section: Introductionmentioning

confidence: 99%

A Three-phase to three-phase matrix converter prototype

Filho

Ruppert

2012

Sba Controle & Automação

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RESUMOProtótipo do conversor em matriz trifásico para trifásico Este trabalho apresenta aspectos relacionados a implementação experimental de um conversor trifásico em matriz. As chaves bidirecionais empregadas na construção do protótipo foram construídas com a utilização de componentes discretos como IGBT's e diodos rápidos. Aspectos relacionados a proteção contra sobre tensão e curto circuito, processo de comutação das chaves bidirecionais e filtro de entrada são apresentados neste trabalho juntamente com resultados experimentais da operação do conversor. PALAVRAS-CHAVE:Conversor em matriz, Chave bidirecional, Modulação por vetores espaciais, Filtro de entrada, Varistores. ABSTRACTThis paper presents some implementation details of a threephase to three-phase matrix converter prototype. The bidirectional semiconductor switches were built using discrete IGBTs and fast diodes. Design aspects such as protection against overvoltage and short-circuit, commutation process Artigo submetido em

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A new modulation strategy for capacitor voltage balancing in three-level NPC inverters based on matrix converter theory

Cited by 8 publications

References 7 publications

Novel ripple reduction method using three-level inverters with unipolar PWM

Novel ripple reduction method using three-level inverters with unipolar PWM

New Switching Patterns Based on Current Space-Vector Diagram Viewpoint to Reduce Input Current Ripple for Three-Level Inverters

A Three-phase to three-phase matrix converter prototype

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