Enhanced Level-Shifted Modulation for a Three-Phase Five-Level Modified Modular Multilevel Converter (MMC)

Younis, Tarek; Mattavelli, Paolo; Magnone, Paolo; Toigo, Igino; Corradin, Michele

doi:10.1109/jestpe.2021.3093486

Cited by 8 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where U y and U z are the voltage amplitudes of the grid and MFT. The capacitor voltage ripple can be reduced by appropriate choice of the modulation scheme to obtain (9) [22]. However, this paper does not cover modulation, as it focuses on analytical expressions for the capacitor current and voltage ripple based on the MMC averaged equivalent circuit.…”

Section: Arm Capacitor Current and Voltage Ripplementioning

confidence: 99%

Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC

Marca,

Roes,

Wijnands

2023

2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)

View full text Add to dashboard Cite

published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

show abstract

Section: Arm Capacitor Current and Voltage Ripplementioning

confidence: 99%

Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC

Marca,

Roes,

Wijnands

2023

2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)

View full text Add to dashboard Cite

show abstract

“…To control the input side of the series-connected modules, different modulation strategies can be used, very similar to the ones used in Multi-Modular Converters (MMCs) [3][4][5][6][7][8][9][10][11], highlighting as the most used, modulation based on phase displacement [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…An analysis of different modulation strategies used in an MMC has been conducted in [5][6][7][8][9][10][11][12][13][14]. These works try to optimize the operation of the MMC by mitigating the imbalance in voltage capacitors, reducing the circulation currents or reducing the commonmode voltage.…”

Section: Introductionmentioning

confidence: 99%

“…These works try to optimize the operation of the MMC by mitigating the imbalance in voltage capacitors, reducing the circulation currents or reducing the commonmode voltage. To control the input side of the series-connected modules, different modulation strategies can be used, very similar to the ones used in Multi-Modular Converters (MMCs) [3][4][5][6][7][8][9][10][11], highlighting as the most used, modulation based on phase displacement [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved Operation Strategy for the High Voltage Input Stage of a Multi-Port Smart Transformer

et al. 2022

View full text Add to dashboard Cite

Smart transformers are considered a crucial part of future smart grids as they will operate as the energy router and be able to control the power flows from and to the microgrids since they are placed in the border. A multi-port transformer can integrate different energy resources, loads and energy storage systems, optimizing the power flows between these elements. Combining both concepts, a multi-port smart transformer is obtained that is able to integrate efficiently distributed and renewable energy resources, electric vehicle chargers, prosumers and energy storage in both AC and DC microgrids. Nevertheless, the operation of these transformers, composed of several modules connected in series to the high-voltage grid is not easy, mainly due to the different power consumed or generated by each module. In this paper this issue is analyzed and different operation strategies for coordinating the series-connected modules at the input side are studied by simulation. The paper will expose how it is possible to extend the proper operation of the system if a reactive power controller is implemented.

show abstract

Power quality enhancement in asymmetrical cascaded multilevel inverter using modified carrier level shifted pulse width modulation approach

Vijayakumar¹,

Stonier

Peter³

et al. 2022

IET Power Electronics

View full text Add to dashboard Cite

New modified carrier‐based level shifted pulse width modulation approaches for single‐phase trinary dc source fed cascaded H‐bridge inverters are proposed in this article. In order to suppress the lower order harmonics, the carrier frequency is often tuned higher. However, switching and electromagnetic interference (EMI) problems have a significant influence on the functioning and controlling of the inverter at higher carrier frequency ranges. A new carrier is designed to address the aforementioned issues. To prove the effectiveness of the proposed carrier, this paper provides comparison results of conventional triangular carrier and a new developed carrier. Furthermore, utilizing the most popular phase disposition (PD) level shifted pulse width modulation approach with a new carrier with the similar modulation indices and switching frequency, to improve the fundamental voltage magnitude and shift the dominant harmonics into three times that of the existing traditional carrier‐based level shifted pulse width modulation approaches. The effectiveness and feasibility of the proposed new modified carrier‐based level shifted pulse width modulation approach have been proven by using MATLAB simulation and prototype results.

show abstract

Enhanced Level-Shifted Modulation for a Three-Phase Five-Level Modified Modular Multilevel Converter (MMC)

Cited by 8 publications

References 29 publications

Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC

Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC

Improved Operation Strategy for the High Voltage Input Stage of a Multi-Port Smart Transformer

Power quality enhancement in asymmetrical cascaded multilevel inverter using modified carrier level shifted pulse width modulation approach

Contact Info

Product

Resources

About