Results 151 to 160 of about 1,137,364 (312)
Hybrid Filter Compensation Device Applied in Mine Hoist Power Distribution System
Kongzhi Yu Xinxi Jishu, 2017 According to the load characteristics of mine distribution system, it tested the pollutions of non-active power and harmonics produced by mine upgrade machine system with AC frequency conversion speed control.
LI Zhong +5 more
doaj
Stability in the instantaneous Bethe–Salpeter formalism: a reduced exact-propagator bound-state equation with harmonic interaction [PDF]
, 2008 Zhi-Feng Li +5 more
openalex +1 more source
Advanced Functional Materials, EarlyView.This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To +5 more
wiley +1 more source
An Algorithm of PWM Modulation under Low Switching Frequency
Kongzhi Yu Xinxi Jishu, 2013 The switching frequency of high power inverters is extreme low, so that the harmonic of PWM is very large. For solving the problem, a PWM modulation algorithm under low switching frequency was analyzed and studied, and the Matlab simulations and ...
LIU Liangjie +4 more
doaj
Advanced Functional Materials, EarlyView.Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng +9 more
wiley +1 more source
Power Quality Assessment in Shipboard Microgrids Under Unbalanced and Harmonic AC Bus Voltage
, 2018 Wenzhao Liu +6 more
openalex +2 more sources
, 1997 Harmonization of the law, in Europe and elsewhere, can be a theory driven process in which law and economics research (J.E.L. code K) can play an important role. With the example of a recent German case, the Waterpenny case, and an established piece of legislation, the Civil Code, it is shown how economic reasoning can enter into the process of ...
openaire +2 more sources
Advanced Functional Materials, EarlyView.The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang +10 more
wiley +1 more source
Transverse coupled-bunch instability thresholds in the presence of a harmonic-cavity-flattened rf potential [PDF]
, 2016 F. J. Cullinan +3 more
openalex +1 more source