Results 101 to 110 of about 13,271,672 (251)

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

International Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou, Lei Zhang, Hanting Peng, Lerong Hong, Qianming Xu, Zhen Zhang, Jiakun Shao, Jianchao Ma, Yizhen Hu   +8 more
doaj   +1 more source

A new transient phenomenon caused by active current dynamics of grid-following converters during severe grid faults

Frontiers in Energy Research
Existing transient stability analysis of grid-following (GFL) converters mainly focuses on the dynamics of the phase-locked loop (PLL), while current loop dynamics are usually neglected due to their faster response than PLL. However, this article reveals
Chao Wu, Zhanqi Huang, Yong Wang, Frede Blaabjerg   +3 more
doaj   +1 more source

Single-Phase high impedance ground fault location method based on transient directional characteristics

International Journal of Electrical Power & Energy Systems
After the single-phase high impedance fault (HIF) occurs in distribution networks, it is difficult to select the faulted feeder and locate the fault section due to the weak fault current and susceptibility to noise interference.
Ao Li, Zengping Wang, Yufeng Zhao, Bo Wang, Tong Wang   +4 more
doaj   +1 more source

Improved Segmented Control Strategy for Continuous Fault Ride-Through of Doubly-Fed Wind Turbines

Energies
Aiming at the transient overcurrent problem faced by doubly-fed induction generators (DFIGs) during continuous voltage fault ride-through, a segmented control strategy based on the rotor side converter (RSC) is proposed.
Tie Chen, Yifan Xu, Yue Liu, Junlin Ren, Youyuan Fan   +4 more
doaj   +1 more source

Influence of the Digital Filter Transient Characteristic on the Behavior of Microprocessor Current Protection

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика
In microprocessor current protection, instantaneous, amplitude, current, and average values can be used as current information parameters. They are determined as a result of the appropriate processing of the digital filter output signal.
F. A. Romaniuk, Yu. V. Rumiantsev, V. Yu. Rumiantsev, A. A. Dziaruhina   +3 more
doaj   +1 more source

Large transient fault current test of an electrical roll ring [PDF]

The space station uses precision rotary gimbals to provide for sun tracking of its photoelectric arrays. Electrical power, command signals and data are transferred across the gimbals by roll rings.
Birchenough, Arthur G., Yenni, Edward J.
core   +1 more source

Transient poverty in rural China [PDF]

The authors study transient poverty in a six-year panel dataset for a sample of 5,000 households in post-reform rural China. Half of the mean squared poverty gap is transient, in that it is directly attributable to fluctuations in consumption over time ...
Jalan, Jyotsna, Ravallion, Martin
core  

TCAD Simulation of Two Photon Absorption-Transient Current Technique Measurements on Silicon Detectors and LGADs. [PDF]

Sensors (Basel)
Pape S, Moll M, Fernández García M, Wiehe M.   +3 more
europepmc   +1 more source

Transient current balancing modulation for seamless load step response in a dual-active-bridge converter with triple phase-shift control. [PDF]

Sci Rep
Zhou S, Tang J.
europepmc   +1 more source

Transient Charge Collection in Ultra-Thin SiC Membranes for Single-Ion Detection. [PDF]

Sensors (Basel)
Sangregorio E, Mancuso AS, De Luca S, Muoio A, Calcagno L, La Via F.   +5 more
europepmc   +1 more source