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Pedro F. Mayuet Ares, Lucía Rodríguez-Parada, Álvaro Gómez-Parra and Moises Batista Ponce
Metal matrix composite (MMC) materials are increasingly used in industrial sectors such as energy, structural, aerospace, and automotive. This is due to the improvement of properties by the addition of reinforcements. Thus, it is possible to obtain prope...
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Thobani Ntshiqa, Alfred Musekiwa, Riyadh Manesen, Hetani Mdose, Nqobile Ngoma, Lazarus Kuonza, Thomas Dlamini, Carl Reddy and Seymour Williams
Male circumcision (MC) reduces HIV transmission risk by up to 60% in heterosexual men. However, uptake of medical male circumcision (MMC) is low in traditionally circumcising communities of South Africa. We assessed knowledge, attitudes, and practices to...
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Hui Cai, Junli Zhang, Jingqiu Yu and Zheren Zhang
DC short-circuit faults are one of the challenges for modular multilevel converter (MMC) based DC grid. It is vital for proper design of protection system to estimate the fault currents and voltages. The existing calculation methods based on RLC equivale...
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Sheng Zhang, Yuguang Bai, Youwei Zhang and Dan Zhao
Hypersonic vehicles or engines usually employ complex thermal protecting shells. This sometimes brings multi-physics difficulties, e.g., thermal-aeroelastic problems like panel flutter etc. This paper aims to propose a novel optimization method versus th...
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Feng Xu, Xiaoming Huang, Yi Lu and Zheren Zhang
This paper focuses on the soft normally open point (SNOP) which has no transformers and connects to the 10 kV distribution network through the arc suppression coil grounding mode. A mathematical model containing positive-, negative-, and zero-sequence co...
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VENU MADHAV GOPALA, T. Anil Kumar, D. Krishna, Ch. Srinivasa Rao, Shashank Kumar, Sudipto Poddar
Pág. 102 - 119
In this paper, Rapid Control Prototyping (RCP) of five-level Modular Multilevel Converter (MMC) based Induction Motor (IM) drive performance is observed with different switching frequencies. The Semikron based MMC Stacks with two half-bridge each are tes...
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VENU MADHAV GOPALA, T. Anil Kumar, D. Krishna, Ch. Srinivasa Rao, Shashank Kumar, Sudipto Poddar
Pág. 102 - 119
In this paper, Rapid Control Prototyping (RCP) of five-level Modular Multilevel Converter (MMC) based Induction Motor (IM) drive performance is observed with different switching frequencies. The Semikron based MMC Stacks with two half-bridge each are tes...
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Marwan Rosyadi, Atsushi Umemura, Rion Takahashi and Junji Tamura
In this paper, a detailed model and an average model of an MMC (Modular Multilevel Converter)-controlled Permanent Magnet Synchronous Generator (PMSG)-based direct drive wind turbine are proposed. The models are used to analyze the steady-state and trans...
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Mohamed Tanta, J. G. Pinto, Vitor Monteiro, Antonio P. Martins, Adriano S. Carvalho and Joao L. Afonso
This paper presents a deadbeat predictive current control methodology to reduce the circulating currents in a modular multilevel converter (MMC) when it operates as a rail power conditioner (RPC) in a conventional railway system-based V/V connection. For...
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Sadot Arciniega-Montiel, Guillermo Ronquillo-Lomeli, Roberto Salas-Zúñiga, Tomás Salgado-Jiménez and Leonardo Barriga-Rodríguez
The perinatal mortality rate is very high throughout the world. A fetal monitor may be used remotely, and this would tackle the problem of continuous monitoring of high-risk pregnancies. There is evidence that current technology is of low reliability, an...
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Kamran Hafeez, Shahid A. Khan, Alex Van den Bossche and Qadeer Ul Hasan
Modular multilevel converters (MMCs) are quickly emerging as a suitable technology for a voltage-source converter-based high-voltage direct-current (VSC-HVDC) transmission systems due to its numerous advantages as reported in literature. However, for a l...
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Junghun Lee, Yeuntae Yoo, Minhan Yoon and Gilsoo Jang
In order to solve the problems brought upon by off-shore wind-power plants, it is important to improve fault ride-through capability when an on-shore fault occurs in order to prevent DC overvoltage. In this paper, a coordinated control strategy is implem...
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Gianluca Brando, Biagio Bova, Andrea Cervone, Adolfo Dannier and Andrea Del Pizzo
This paper deals with a Power Electronic Transformer (PET) topology for a 3-phase AC distribution grid. In the discussed topology, a Modular Multilevel Converter (MMC) and a Full-Bridge converter are employed for the medium voltage (MV) and the low volta...
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Mohammadmehdi Shabani, Joaquim Sacramento, Filipe J. Oliveira and Rui F. Silva
Ceramic cutting inserts coated with ten-fold alternating micro- and nanocrystalline diamond (MCD/NCD) layers grown by hot filament chemical vapor deposition (CVD) were tested in the machining of an Al based metallic matrix composite (MMC) containing 15 v...
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With the increasing demand of transmitting bulk-power over long-distance, the ultra high-voltage direct-current (UHVDC) transmission systems become an attractive option. Nowadays, not only the line commutated converter (LCC) based systems, but also the m...
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Xiaodong Li and Zheng Xu
The large number of switching elements in modular multilevel converters (MMCs) contribute a tremendous computational burden for electromagnetic transient (EMT) simulation programs. Detailed equivalent models (DEMs) and average value model (AVMs) are curr...
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Philippe Rosset, Adil Takahashi and Luc Chouinard
The metropolitan community of Montreal (MMC) is located in Eastern Canada and included in the western Quebec seismic zone characterized by shallow crustal earthquakes and moderate seismicity. Most of the urbanized areas are settled close to the Saint-Law...
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Zhijie Liu, Kejun Li, Yuanyuan Sun, Jinyu Wang, Zhuodi Wang, Kaiqi Sun and Meiyan Wang
Modular multilevel converters (MMCs) have shown great potential in the area of multi-megawatt wind energy conversion system (WECS) based on permanent magnet synchronous generators (PMSGs). However, the studies in this area are few, and most of them refer...
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Yu Gu, Guoxin Zhang, Ying Bi, Wenyue Meng, Xiaoping Ma and Wenjun Ni
Moving mass control (MMC) is considered a promising approach to regulating the attitude of an aircraft via the motion of internal moving masses. The present investigation proposes a moving mass control scheme for a high-altitude long-endurance (HALE) unm...
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Jiyong Kim and Jungho Kim
We theoretically model the near-field (NF) absorption for a multilayer micro-cavity (MMC) structure and investigate the contribution of the NF absorption to the dipole radiation power in top-emitting organic light-emitting diodes (OLEDs). The NF absorpti...
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