Results 81 to 90 of about 820,288 (203)

Magnetic control of large room-temperature polarization

, 2009
Numerous authors have referred to room-temperature magnetic switching of large electric polarizations as The Holy Grail of magnetoelectricity.We report this long-sought effect using a new physical process of coupling between magnetic and ferroelectric ...
Ashok Kumar, Astrov D N, Astrov D N, Bao D, Correa M, Cross L E, Curie P, Dzyaloshinskii I E, Dzyaloshinskii I E, Fox D L, Freeman A J, G L Sharma, J F Scott, Karmarkar M, R Blinc, R Pirc, R S Katiyar, Samara G A, Scott J F, Smolenskii G A, Smolenskii G A, Smolenskii G A, van den Brink J, Ventura J, Wu E, Ye Z-G   +25 more
core   +2 more sources

Hybrid-Vector Deadbeat Model Predictive Torque Control for SPMSM With Improved Switching Loss and Synthesis Accuracy

IEEE Access
To improve the performance of the dual-vector model predictive torque control (MPTC) scheme for SPMSM, for sectors II, IV, and VI, this paper attempts to improve the traditional dual-vector modulation with three-segment symmetrical sequences from two ...
Weiyang Hou, Yiru Miao, Ruizhi He, Wu Liao, Qiwei Xu, Shoudao Huang, Yuxiaoying Tu   +6 more
doaj   +1 more source

Unified ZVS strategy for DAB with triple-phase-shift modulation in boost mode

The Journal of Engineering, 2019
In this study, the switching mode and working waveform of dual active bridge (DAB) converter under triple phase-shift modulation scheme is analysed, and an ALL-ZVS (zero voltage switching) control strategy of all devices for full-power range with voltage
Jian Qiu, Kai Shen, Anping Tong, Lijun Hang, Jiarui Liao   +4 more
doaj   +1 more source

Microwave switching power divider [PDF]

, 1981
A pair of parallel, spaced-apart circular ground planes define a microwave cavity with multi-port microwave power distributing switching circuitry formed on opposite sides of a thin circular dielectric substrate disposed between the ground planes.
Johnson, R. W., Stockton, R. J.
core   +1 more source

Online Learning with Switching Costs and Other Adaptive Adversaries

, 2013
We study the power of different types of adaptive (nonoblivious) adversaries in the setting of prediction with expert advice, under both full-information and bandit feedback. We measure the player's performance using a new notion of regret, also known as
Cesa-Bianchi, Nicolo, Dekel, Ofer, Shamir, Ohad   +2 more
core  

Efficient Tracking of Large Classes of Experts

, 2011
In the framework of prediction of individual sequences, sequential prediction methods are to be constructed that perform nearly as well as the best expert from a given class.
Gyorgy, András, Linder, Tamás, Lugosi, Gábor   +2 more
core   +2 more sources

Research on a Thirteen-Level Switched Capacitor Inverter with Low Switching Loss

Energies
This paper presents a 13-level switched capacitor inverter with a novel modulation method designed to minimize the number of switches and significantly reduce switching losses.
Zhipeng Wu, Yuanhuang Liu, Tianchu Li, Ming Fang, Junfeng Liu, Chunyan Huang   +5 more
doaj   +1 more source

Molecular basis of heavy-chain class switching and switch region deletion in an Abelson virus-transformed cell line [PDF]

, 1984
We demonstrated that a subclone of an Abelson murine leukemia virus-transformed B-lymphoid cell line switched from mu to gamma 2b expression in vitro, by the classical recombination-deletion mechanism.
Alt, Frederick W., Andrews, Nancy, Baltimore, David, DePinho, Ronald, Kruger, Kelly, Lutzker, Stuart   +5 more
core  

An Improved Near-State Pulse-Width Modulation with Low Switching Loss for a Permanent Magnet Synchronous Machine Drive System

Energies
Common-mode voltage (CMV) leads to the shaft voltage and shaft current by coupling the capacitor network in the permanent magnet synchronous machine (PMSM), which affects the reliability of the whole motor drive system.
Pei Qing, Ruoyu Chen, Qiang Gao
doaj   +1 more source

A Novel Asymmetric Trench SiC Metal–Oxide–Semiconductor Field-Effect Transistor with a Poly-Si/SiC Heterojunction Diode for Optimizing Reverse Conduction Performance

Micromachines
In this paper, a novel asymmetric trench SiC MOSFET with a Poly-Si/SiC heterojunction diode (HJD-ATMOS) is designed to improve its reverse conduction characteristics and switching performance.
Yiren Yu, Zijun Cheng, Yi Hu, Ruiyi Lv, Shengdong Hu   +4 more
doaj   +1 more source