Results 81 to 90 of about 2,335,034 (244)

Operating Performance of the Modular Multilevel Matrix Converter in Drive Applications

, 2015
The Modular Multilevel Matrix Converter (M3C) is an emerging topology, especially suitable for high torque low speed drive applications in the medium voltage range. One special benefit is the overload capability of the output currents. Up to 200% of the nominal values can be reached near standstill to overcome breakaway torques without additional ...
Kammerer, Felix, Bräckle, Dennis, Gommeringer, Mario, Schnarrenberger, Mathias, Braun, Michael   +4 more
openaire   +2 more sources

Topologies and control of low-frequency alternating current for offshore wind farms based on modular multilevel matrix converter

The Journal of Engineering, 2019
As a new alternative to power transmission, low-frequency alternating current (LFAC) transmission system has a bright future for offshore wind power transmission.
Chang Yuan, Ruibing Zhou, Ming Tong
doaj   +1 more source

Voltage Monitoring on Capacitor of Modular Multilevel Converter

, 2009
Voltage Monitoring on Capacitor of Modular Multilevel ConverterA modular multilevel converter is an attractive solution for power conversion without transformers. As modular multilevel converter consists of cascade connections and floating dc capacitors,
Leonids Ribickis, Ingars Steiks
core   +1 more source

Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications

Advanced Science, EarlyView.
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin, Shuo Sun, Jiahao Zhang, Jianuo Hu, Yubin Qiao, Liang Chen, Jin Li   +6 more
wiley   +1 more source

Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault

Energies, 2018
The integration of a modular multilevel converter-based high-voltage direct current (MMC-HVDC) transmission system in power networks has led to a high requirement for the rapidity of fault recognition.
Qing Huai, Kaipei Liu, Liang Qin, Jian Le, Kun Wang, Shu Zhu, Yuye Li, Xiaobing Liao, Hua Ding   +8 more
doaj   +1 more source

Overload Capability of the Modular Multilevel Matrix Converter for Feeding High Torque Low Speed Drives [PDF]

, 2014
In drive systems, the semiconductors of conventional converters must be dimensioned for the maximum torque. This results in a converter oversizing even for short time overload requirements near standstill, e.g. for mills in the mining industry.
Kammerer, Felix, Kolb, Johannes, Gommeringer, Mario, Braun, Michael   +3 more
core   +1 more source

Intelligent Polymer Electrolytes for Next‐Generation Zinc‐Based Energy Storage Devices

Advanced Science, EarlyView.
Intelligent polymer electrolytes are organized into a three‐level hierarchy that advances zinc‐based energy storage from passive ion conduction toward active, adaptive, and intelligent operation. Molecular regulation of Zn+ coordination, water activity, desolvation, ion flux, and interfaces underpins adaptive self‐healing, anti‐freezing, adhesion, and ...
Sanath Kumar, Jhansirani Kesavan, Muhammad Asim, Atul Verma, Yen‐Pei Fu   +4 more
wiley   +1 more source

Efficient In‐Hardware Matrix–Vector Multiplication and Addition Exploiting Bilinearity of Schottky Barrier Transistors Processed on Industrial FDSOI

Advanced Electronic Materials, EarlyView.
ABSTRACT Machine learning and Artificial Intelligence (AI) tasks have stretched traditional hardware to its limits. In‐hardware computation is a novel approach that aims to run complex operations, such as matrix–vector multiplication, directly at the device level for increased efficiency.
Juan P. Martinez, Niladri Bhattacharjee, Yuxuan He, Giulio Galderisi, Brojogopal Sapui, Sara Mannaa, Ian O'Connor, Violetta Sessi, Peter Javorka, Thomas Mikolajick, Jens Trommer   +10 more
wiley   +1 more source

Analytical monodromy matrix method for small-signal stability analysis of grid-connected modular multilevel converter systems

International Journal of Electrical Power & Energy Systems
The modular multilevel converter (MMC) has been widely used in high-voltage/high-power applications, e.g., high-voltage direct current transmission. However, its nonlinear time-periodic nature leads to complex harmonic interactions and then complicates ...
Xiaofan Jia, Hua Ye
doaj   +1 more source

A Single Volatile VO2 Memristor Enabling Neuromorphic Perception, Learning, and Computing

Advanced Electronic Materials, EarlyView.
A single volatile VO2 memristor fabricated via atomic layer deposition is demonstrated as a multifunctional neuromorphic device enabled by intrinsic threshold‐switching dynamics. The device reproduces neuron‐like integration and firing, short‐timescale associative learning, temporal ECG pattern classification, and nociceptive responses to electrical ...
Bingkai Ding, Bohao Ding, Omesh Kapur, Yisong Han, Richard Beanland, Kai Sun, C. H. (Kees) de Groot, Ruomeng Huang   +7 more
wiley   +1 more source