New MMC-Based Multilevel Converter with Two-And-One Set of Arms and One Inductor

Jafari, Mahdi; Jafarishiadeh, Fatemehalsadat; Ghasemi, Arman; Shojaeighadikolaei, Amin; Saadatmand, Sepehr; Ahmadi, Reza

doi:10.1109/peci48348.2020.9064616

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…Nevertheless, it is complex for the MVHP-MMC to expand to a true three-phase converter due to the coordination of three arms and four sets of switches in each phase. Moreover, the operation of switches leads to additional losses, and this converter has no dc fault handling capability [49].…”

Section: ) Mvhp-mmcmentioning

confidence: 99%

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Beyond the MMC: Extended Modular Multilevel Converter Topologies and Applications

Sun

Tian

Pou

et al. 2022

IEEE Open J. Power Electron.

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The unique advantages of modular multilevel converters (MMCs) have led to wide adoption of the converter topology in high voltage dc (HVDC) transmission systems, with great potential for use in medium voltage motor drive and dc grid applications. Inspired by the structure of the MMC, many extended converter topologies have been developed in the literature. These include, in addition to conventional parallel multiphase connection, a variety of series-connected topologies. Extended MMCs integrate the modular nature of cascaded SMs of the MMC but with different topology structure leading to substantially different operating principles. Given the growing number of such topologies, this paper provides a critical review of MMC derived topologies and summarizes individual advantages and disadvantages. The control schemes * : Common characteristics and advantages/disadvantages of the whole category.

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Section: ) Mvhp-mmcmentioning

confidence: 99%

“…The switches in the HMMC and the MEMC turn on/off in one fundamental period depending on the actual output voltage (positive, negative or zero voltage). In addition, four sets of switches in the MVHP-MMC are turned on/off based on two operation modes (modulation index above/below 0.5) [49].…”

Section: B Specific Control Functionsmentioning

confidence: 99%

Beyond the MMC: Extended Modular Multilevel Converter Topologies and Applications

Sun

Tian

Pou

et al. 2022

IEEE Open J. Power Electron.

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“…The initiation of MMC took place in 2002 for the employment of high-voltage direct current (HVDC) systems in high-voltage transmission implementations [6]. In 2003, Marquardt was the first to present MMC and it turned out to be progressively appealing owing to modularity, high efficiency, excellent Vout waveform, redundancy, and avoiding separate dc sources [7]. The first papers  ISSN: 2302-9285 Bulletin of Electr Eng & Inf, Vol.…”

Section: Introductionmentioning

confidence: 99%

An ingenious MMC topology appropriate for motor drives across their entire frequency spectrum

Patil¹,

Thakre

Sonawane

et al. 2023

Bulletin EEI

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Modular multilevel converter (MMC) modules have popped up as among the best choices for medium and high-powered uses. This paper proposes a control scheme for the entire frequency range of operation for the MMC, focusing on supplying a three-phase machine. The machine is required to be controlled in the outer as well as the inner loop. Standard field oriented control (FOC) manages the three-phase machine in the outer closed loop while the inner control has to come up against the problem of energy balancing. That is unevenly distributed and stored in the capacitance of the upper and lower arms of the converter. There are two operating methods used in the inner control loop: a low-frequency method is used for start-up and low-speed operation, and a high-frequency method is for higher speed. In low-frequency mode (LF-mode), a special control strategy has to be implemented to minimize the energy oscillation in the capacitances of the converter arms. It makes utilization of the 3-phase machine's common mode voltage (Vc) as well as internal circulatory currents to verify a symmetrical energy distribution inside this MMC arms and also to avert whatever AC currents inside the DC source.

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“…In a system, there are several required voltage levels for different applications [30][31][32]. The complex topology, such as buck-boost topology and modular multilevel topology, could provide the power supply for the different output voltage requirements.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of N-Branch Hybrid Switched Inductor and Capacitor Converter

Yang

et al. 2021

Electronics

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This paper proposes a family of N-Branch hybrid switched inductor and capacitor (SLC) converters. With the single circuit, the multi-level output voltage or current could be generated. The proposed converter is suitable both for the voltage source and the current source. The same LC network is reused for different LC branches. The proposed converter is controlled by the phase shift control method with a time domain multiplexing concept. The N level circuit is operated with the same frequency. One cycle period is divided into N small time cycles for each branch. The phase shift for each branch is . The load voltage could be changed by modifying the duty cycle of the transistor. When the SLCs work in the resonant condition, the soft switching will be acquired. The power loss of transistors could be sharply reduced. In this paper, a 300 W SLC converter is constructed to verify the theoretical analysis and operation mechanism in the resonant condition and hard switching condition. With the experimental and simulated verification, the soft switching and the stable multi-level output voltage or current are achieved. The proposed SLC converter could be used for the multi-level voltage power supply system, such as the electric vehicle, the electric aircraft, autonomous underwater vehicles (AUVs) and a new energy generation system.

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New MMC-Based Multilevel Converter with Two-And-One Set of Arms and One Inductor

Cited by 7 publications

References 10 publications

Beyond the MMC: Extended Modular Multilevel Converter Topologies and Applications

Beyond the MMC: Extended Modular Multilevel Converter Topologies and Applications

An ingenious MMC topology appropriate for motor drives across their entire frequency spectrum

Modeling and Analysis of N-Branch Hybrid Switched Inductor and Capacitor Converter

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