Results 41 to 50 of about 3,921,823 (274)

Real-Time Optimization Strategy to Minimize Switching Losses for Three-Level NPC Inverter

CSEE Journal of Power and Energy Systems
This paper proposes a real-time optimization strategy, aimed at minimizing switching losses in a three-level neutral-point-clamped (3L-NPC) inverter.
Kai Li, Min Wei, Chuan Xie, Fujin Deng, Josep M. Guerrero, Juan C. Vasquez   +5 more
doaj   +1 more source

Design of Control System for 5MW Medium Voltage  Direct-Driven Wind Power Converter

Journal of Harbin University of Science and Technology, 2018
The diode threelevel neutralpointclamped (3LNPC) converter with full power is a promising multilevel topology in the application of wind power generation system.
DENG Xiao-xiang, DAI Chao-fan
doaj   +1 more source

Adaptive Backstepping Control of Vacuum Servo System Using High-Speed on-off Valves

IEEE Access, 2020
Using high-speed on-off valves (HSVs) with small size, low cost, and high switching accuracy instead of expensive proportional/servo valves, and researching high-performance vacuum servo system can further enhance the competitiveness of vacuum servo ...
Gang Yang, Peng Jiang, Lei Lei, Yong Wu, Jingmin Du, Baoren Li   +5 more
doaj   +1 more source

Strategy implementation - Leveraging people in adaptive strategy [PDF]

, 2023
Strategy is about making fundamental choices on where to play and how to win to realise an organisation’s goals, and to deliver results within the context of those choices. This identifies two elements of the strategy process: Formulation (thinking) and
Peeters, Carine, Weiss, Martin, Hamilton, Brett   +2 more
core  

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

Advanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang, Dong Hyun Lee, Conan Weiland, Won‐Il Lee, Kim Kisslinger, Mingzhao Liu, Aswin kumar Anbalagan, Xiao Tong, Soumyajit Mandal, Nikhil Tiwale, Houk Jang, Chang‐Yong Nam   +11 more
wiley   +1 more source

Harmonic-Controlled Space Vector Modulation With Reduced Switching Transitions for Two-Level Nine-Phase Motor Drives

IEEE Open Journal of Industry Applications
Multiphase motor drives offer several advantages over their three-phase counterparts, including reduced power per phase, lower voltage or current levels while maintaining the same output power, and enhanced fault tolerance.
Rodrigo R. Bastos, Braz J. Cardoso Filho
doaj   +1 more source

Triple-Mode Average Current Control with Valley Current Shaping for DCM/CRM/CCM Boost PFC Converter

Energies, 2022
This paper presents a triple-mode average current control (TACC) strategy to achieve unity power factor and reduce the current stress for a boost PFC converter.
Liangliang Lu, Gaoshuai Shen, Haoran Xu, Qiaoling Tong, Run Min, Qiao Zhang, Jun Yuan, Ningyu Liu   +7 more
doaj   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

Pulse width Modulation Command Systems Used for the Optimization of Three Phase Inverters

Advances in Electrical and Computer Engineering, 2009
This paper deals with a novel pulse width modulation (PWM) switching strategy for a voltage source inverter through carrier modification. The proposed discontinuous sine carrier PWM (DPWM1) method, which uses two modified sine waves, has a better ...
LUCANU, M., TIGAERU, L., URSARU, O., AGHION, C.   +3 more
doaj   +1 more source