A Hybrid Modular Multilevel Converter for Medium-Voltage Variable-Speed Motor Drives

Li, Binbin; Zhou, Shaoze; Xu, Dianguo; Finney, S.J.; Williams, B.W.

doi:10.1109/tpel.2016.2598286

Cited by 134 publications

(68 citation statements)

References 26 publications

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“…Besides, the comparative study is carried out between the traditional PSC‐PWM and improved PSC‐PWM method. Same name but with different circuit topology, a new hybrid MMC topology is presented by Li et al, which has a capability of decreasing the capacitor voltage ripples on SMs, operating under low speed conditions in motor drives. Proposed MMC is clarified in terms of operation, design, and control with the reduction of capacitor voltage ripples.…”

Section: Circuit Topology and Modellingmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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Summary The modular multilevel converters (MMCs) are frequently preferred for medium and high power energy conversion systems thanks to their modular structure and high quality output waveform. The remarkable studies related to the MMC have been carried out in recent years, which are mainly focused on its topology, control, or application. In this paper, MMC circuit topologies consisting of traditional submodule cells and new proposed configurations are introduced, and their control process, modulation techniques, and application areas are discussed in order to provide the readers the current state of the art of MMC technology. A wide part of this article is devoted to demonstrate the recent contributions arising in MMC studies. In this context, this paper not only outlines the circuit topology, control objectives, and applications of the MMC but also presents a comprehensive review, principally in terms of the latest developments of it. Ultimately, detailed proposals and new possible topics are provided to drive future expectations of MMC technology.

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Section: Circuit Topology and Modellingmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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“…The modular multilevel converter (MMC), first proposed by Marquardt and Lesnicar in 2003 [1], has become the most attractive topology for high voltage applications. Over the past decade, extensive research has been focused on the technical challenges associated with the designs, operation and control of the MMC to improve its performance for various applications [2][3][4][5][6][7][8][9][10][11][12][13]: voltage source converter-based high voltage direct current transmission (VSC-HVDC) [5][6][7][8]. Authors of References [9][10][11] give the independent active and reactive power control strategies of MMC from single system to a dual system in detail.…”

Section: Introductionmentioning

confidence: 99%

Research on an Auto-Optimized Capacitor Voltage Balancing Control Strategy of MMC SM for Renewable Energy HVDC Transmission System

et al. 2019

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The Modular Multilevel Converter (MMC) is one of the most attractive converter topologies in the High Voltage Direct Current (HVDC) transmission field. The latest widely used sorting method has a low algorithm complexity. It can effectively balance the sub-module (SM) capacitor voltages, but it would cause relatively high switching frequency and power loss. Aiming at the problem that the sub-module (SM) capacitor voltage sorting algorithm has a large switching loss due to the high switching frequency of the device, this paper proposes an auto-optimized capacitor voltage balancing control strategy. Firstly, the topology and operation principle of MMC are analyzed. Secondly, a SM capacitor voltage control method based on the dynamic deviation threshold is proposed. Considering the switch switching state of the SM and the difference between the voltages of each SM, the algorithm can obtain the dynamic deviation valve using the closed-loop control. The method can avoid the unnecessary repeated switching of the Insulated Gate Bipolar Transistor (IGBT) under the premise of ensuring that the capacitance voltages of the SMs are basically the same, which effectively result in reducing the switching frequency of the MMC SM and reducing the switching loss, thereby improving the operating efficiency of the system. Finally aiming at the proposed control strategy, the simulation and experimental verification are carried out which shows that the proposed algorithm can better control the system voltage deviation, reduce the switching loss of the system and improve the stability of the system.

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“…In both schemes, a high-frequency voltage is introduced into the sub-arms, which excites a high-frequency current in the additional cross-connected path to create one degree of freedom for power redistribution between both the upper and lower arms. Other configurations address MMC low-frequency operation by employing full-bridge SMs instead of the HB-SMs [33], suggesting an MMC-based Hexverter topology for energy-balance control [34], combining the conventional MMC configuration with a series switch to the dc input source to reduce the average dc components in the arm voltages by disconnection of the dc source at regular intervals [35], and connecting the capacitors of the top SMs and the bottom SMs via two accessorial cables, while connecting the upper and lower arms through a central SM [36].…”

mentioning

confidence: 99%

A Dual Modular Multilevel Converter With High-Frequency Magnetic Links Between Submodules for MV Open-End Stator Winding Machine Drives

Diab

Massoud

Ahmed

et al. 2018

IEEE Trans. Power Electron.

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A Hybrid Modular Multilevel Converter for Medium-Voltage Variable-Speed Motor Drives

Cited by 134 publications

References 26 publications

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Research on an Auto-Optimized Capacitor Voltage Balancing Control Strategy of MMC SM for Renewable Energy HVDC Transmission System

A Dual Modular Multilevel Converter With High-Frequency Magnetic Links Between Submodules for MV Open-End Stator Winding Machine Drives

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