Results 91 to 100 of about 200,732 (327)

Reconfiguration of a Multilevel Inverter with Trapezoidal Pulse Width Modulation

Energies, 2018
This paper presents different multi-carrier unipolar trapezoidal pulse width modulation strategies for a reduced switch asymmetrical multilevel inverter.
Nataraj Prabaharan, V. Arun, Padmanaban Sanjeevikumar, Lucian Mihet-Popa, Frede Blaabjerg   +4 more
doaj   +1 more source

Design and manufacture of direct current torquer amplifiers Final summary report [PDF]

Design and manufacture of direct current torquer amplifier with pulse width modulation ...
Gilchrest, D. W., Schutz, A. E.
core   +1 more source

Efficient simulation of DC-DC switch-mode power converters by multirate partial differential equations

, 2018
In this paper, Multirate Partial Differential Equations (MPDEs) are used for the efficient simulation of problems with 2-level pulsed excitations as they often occur in power electronics, e.g., DC-DC switch-mode converters.
Gyselinck, Johan, Pels, Andreas, Sabariego, Ruth V., Schöps, Sebastian   +3 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Step-Pulse Modulation of Gain-Switched Semiconductor Pulsed Laser

Applied Sciences, 2019
To improve the peak power and extinction ratio and produce ultra-short pulses, a novel approach is presented in this paper offers a highly effective modulated method for a gain-switched semiconductor laser by using step-pulse signal modulation.
Bin Li, Changyan Sun, Yun Ling, Heng Zhou, Kun Qiu   +4 more
doaj   +1 more source

The Synergy of Artificial Intelligence and 3D Bioprinting: Unlocking New Frontiers in Precision and Tissue Fabrication

Advanced Functional Materials, EarlyView.
Advances in integrating artificial intelligence into 3D bioprinting are systematically reviewed here. Machine learning, computer vision, robotics, natural language processing, and expert systems are examined for their roles in optimizing bioprinting parameters, real‐time monitoring, quality control, and predictive maintenance.
Joao Vitor Silva Robazzi, Irem Deniz Derman, Deepak Gupta, Logan Haugh, Yogendra Pratap Singh, Vaibhav Pal, Yasar Ozer Yilmaz, Suihong Liu, Andre Luis Dias, Rogerio Andrade Flauzino, Ibrahim Tarik Ozbolat   +10 more
wiley   +1 more source

Direct power control in pulse-width modulation rectifier based on virtual flux estimation

Advances in Mechanical Engineering, 2017
Pulse-width modulation rectifier plays an important role in the field of electric energy conversion. It has many advantages such as the grid side current sinusoidal, bidirectional energy flow, and unit power factor.
Bo Fan, Xian-Bo Wang, Zhi-Xin Yang, Lu Song, Shu-Zhong Song   +4 more
doaj   +1 more source

Energy efficiency of semiconductor light sources at pulse mode [PDF]

, 2018
Представлена методика та опис установки для вимірювання енергоефективності напівпровідникових джерел світла при імпульсному живленні. Досліджено вплив параметрів джерел живлення з широтною модуляцією імпульсів на енергетичну ефективність ...
Andriychuk, Volodymyr, Lypovetskiy, Mykola, Osadtsa, Yaroslav, Андрійчук, Володимир Андрійович, Липовецький, Микола Миколайович, Осадца, Ярослав Михайлович   +5 more
core  

Gated PN Junction in Ambipolar MoS2 for Superior Self‐Powered Photodetection

Advanced Functional Materials, EarlyView.
A high‐quality gated pn junction based on ambipolar molybdenum disulfide (MoS2) is demonstrated by employing a partial‐gate structure and a Pt bottom contact that forms a semi‐van der Waals interface, facilitating efficient hole injection into the channel.
Jaeha Hwang, Jungi Song, Hanbyeol Jang, Yongwook Seok, Jiwi Park, Suyeon Lee, Jun‐Hyeok Choi, Gyeongsu Lee, Kenji Watanabe, Takashi Taniguchi, Byoung Hun Lee, Kyoungsik Yu, Kayoung Lee   +12 more
wiley   +1 more source

Design of High-Precision Driving Control System for Charge Management

Sensors
Due to the interaction of accumulated charges on the surface of a test mass with the surrounding electric and magnetic fields, the performance of inertial sensors is affected, necessitating charge management for the test mass.
Yang Wang, Boyan Lv, Tao Yu, Longqi Wang, Zhi Wang   +4 more
doaj   +1 more source