Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Li, Shisong"'
Autor:
Liu, Weibo, Li, Nanjia, Ma, Yongchao, Hu, Ruo, Wu, Shuqing, Zhao, Wei, Huang, Songling, Li, Shisong
The Kibble balance requires a measurement of the local gravitational acceleration, $g$, with a typical relative measurement uncertainty of $10^{-9}$. In this paper, the determination of $g$ for the Tsinghua tabletop Kibble balance is presented. A pol
Externí odkaz:
http://arxiv.org/abs/2405.08541
Magnetic-array-type current sensors have garnered increasing popularity owing to their notable advantages, including broadband functionality, a large dynamic range, cost-effectiveness, and compact dimensions. However, the susceptibility of the measur
Externí odkaz:
http://arxiv.org/abs/2402.11419
The Kibble balance is a precision instrument for realizing the mass unit, the kilogram, in the new international system of units (SI). In recent years, an important trend for Kibble balance experiments is to go tabletop, in which the instrument's siz
Externí odkaz:
http://arxiv.org/abs/2304.10732
The diffusion of nonlinear loads and power electronic devices in power systems deteriorates the signal environment and increases the difficulty of measuring harmonic phasors. Considering accurate harmonic phasor information is necessary to deal with
Externí odkaz:
http://arxiv.org/abs/2211.08798
Autor:
Schlamminger, Stephan, Keck, Lorenz, Seifert, Frank, Chao, Leon S., Haddad, Darine, Li, Shisong
Analytically the forces and torques on a coil in a field of magnetic flux density can be calculated one of two ways. The line integral can be conducted along the coil's wire, summing up the differential force contribution. For each differential line
Externí odkaz:
http://arxiv.org/abs/2208.12249
Autor:
Li, Shisong, Schlamminger, Stephan
The Kibble balance has become one of the major instruments for realizing the mass unit, the kilogram, in the revised international system of units (SI). Researchers at about a dozen national metrology institutes are actively working with Kibble balan
Externí odkaz:
http://arxiv.org/abs/2206.03636
Autor:
Li, Shisong, Schlamminger, Stephan
The magnet system is an essential component of the Kibble balance, a device that is used to realize the unit of mass. It is the source of the magnetic flux, and its importance is captured in the geometric factor $Bl$. Ironically, the $Bl$ factor canc
Externí odkaz:
http://arxiv.org/abs/2111.07772
The increasing use of renewable generation, power electronic devices, and nonlinear loads in power systems brings more severe interharmonic tones to the measurand, which can increase estimation errors of P-class PMUs, cause misoperation of protection
Externí odkaz:
http://arxiv.org/abs/2110.09821
As the complexity increases in modern power systems, power quality analysis considering interharmonics has become a challenging and important task. This paper proposes a novel decomposition and estimation method for instantaneous power quality indice
Externí odkaz:
http://arxiv.org/abs/2101.05220
Autor:
Li, Shisong, Schlamminger, Stephan, Marangoni, Rafael, Wang, Qing, Haddad, Darine, Seifert, Frank, Chao, Leon, Newell, David, Zhao, Wei
Employing very simple electro-mechanical principles known from classical physics, the Kibble balance establishes a very precise and absolute link between quantum electrical standards and macroscopic mass or force measurements. The success of the Kibb
Externí odkaz:
http://arxiv.org/abs/2101.02078