Results 21 to 30 of about 40,872 (307)

Research on magnetic field and temperature field of multi-phase SPMSM under winding fault

Energy Reports, 2023
In order to quickly and accurately calculate fault-tolerant capability of multi-phase surface-mount permanent magnet synchronous motor (SPMSM) at condition of asymmetrical fault, based on subdomain model, an analytical model for multi-phase SPMSM with ...
Zhanyang Yu, Jiaocui Wan, Yan Li, Yongteng Jing, Sen Wang   +4 more
doaj   +1 more source

Frequency Dependent Rheology of Vesicular Rhyolite [PDF]

, 1993
Frequency dependent rheology of magmas may result from the presence of inclusions (bubbles, crystals) in the melt and/or from viscoelastic behavior of the melt itself.
Angell, Bagdassarov, Barnes, Bentley, Berckhemer, Brawer, Cashman, Chen, D. B. Dingwell, Dattagupta, Dingwell, Dingwell, Hopkins, Jäckle, Jäckle, Kampfmann, Khitarov, Moynihan, N. S. Bagdassarov, Nguyen, Nowick, Philippoff, Prud'homme, Ripley, Schowalter, Sinning, Stein, Sura, Webb   +28 more
core   +1 more source

The natural history of bugs: using formal methods to analyse software related failures in space missions [PDF]

, 2005
Space missions force engineers to make complex trade-offs between many different constraints including cost, mass, power, functionality and reliability. These constraints create a continual need to innovate. Many advances rely upon software, for instance
A.R. Anderson, C.I. Lewis, C.W. Johnson, C.W. Johnson, F. Jackson, H.P. Grice, M. Jackson   +6 more
core   +1 more source

Fault suppression strategy of active compensators in asymmetric distribution networks

International Journal of Electrical Power & Energy Systems
The new-type distribution network with a high penetration of distributed generation (DG) faces challenges such as significant power fluctuations and the inability to fully compensate for single-phase grounding fault currents.
Jian-zhang You, Ke-huan Liu, Mou-fa Guo, Xiang-jun Zeng   +3 more
doaj   +1 more source

Modeling and Parameter Optimization of Grid-Connected Photovoltaic Systems Considering the Low Voltage Ride-through Control

Energies, 2020
The asymmetric faults often cause the power grid current imbalance and power grid oscillation, which brings great instability risk to the power grid.
Li Wang, Teng Qiao, Bin Zhao, Xiangjun Zeng, Qing Yuan   +4 more
doaj   +1 more source

Conjugate Vectors Method Applied to Asymmetrical Fault Analysis of Power Electronized Power Systems

CSEE Journal of Power and Energy Systems
With the wide application of power electronized resources (PERs), the amplitude and frequency of voltages show significant time-varying characteristics under asymmetrical faults. As a result, the traditional phasor model, impedance model, and symmetrical
Yingbiao Li, Xing Liu, Jiabing Hu, Jianhang Zhu, Jianbo Guo   +4 more
doaj   +1 more source

Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet [PDF]

Lithosphere
Microfracture density in fault damage zones can reflect spatial variability that decays in intensity as a function of distance from the fault, which is crucial in understanding the mechanical, seismological, and fluid-flow properties of the fault system.
Hu Wang, Peisheng Luo, Yi Liang, Dongming Li, Kaijin Li, Lin Deng, Lichun Chen   +6 more
doaj   +1 more source

Determination of SCC Contributed by DFIG Under Asymmetrical Short Circuit Fault

CSEE Journal of Power and Energy Systems
For the past decades, practical calculation method of short circuit current (SCC) contributed by doubly fed induction generator (DFIG) under asymmetrical short circuit fault is deficient due to its control strategies and unlinear equipment.
Wenjia Xu, Yalou Li, Peipeng Zhou, Bin Han, Zutao Xiang   +4 more
doaj   +1 more source

Three-Phase-Measurement-Based Load Modeling Technique Using Unbalanced Fault Data

IEEE Access, 2020
This study presents a load modeling technique using unsymmetrical fault data. Typically, three-phase balanced fault data are prerequisite for load modeling; however, the existing technique utilizes only positive sequence data.
Sangwook Han
doaj   +1 more source

Underground Coal Gasification Efficiency in Areas of High Faulting Frequency [PDF]

, 2017
The purpose of this paper is substantiating of efficiency during application of borehole underground coal gasification technology based on target coal seam geology.
Lozynskyi, Vasyl
core   +1 more source