|
|
|
|
|
NARESH KUMAR,B. P. YADAV,SHILPA GAHLOT,MANMOHAN SINGH
Pág. 63 - 70
The Himalayas have an important role in Indian weather and climate, since they control the western disturbances (WDs) during winter and the southwest monsoon during summer. During the winter months (December to March), westerly winds associated with WDs ...
ver más
|
|
|
|
|
|
|
|
|
|
The traditional additional inertial control (T-AIC) strategy can provide frequency support for the directly-driven wind turbine with a permanent magnet synchronous generator (D-PMSG). However, due to the fixed control coefficients, the frequency modulati...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ting Jin, Guohua Kang, Jian Cai, Shaoxia Jia, Jinghua Yang, Xinghua Zhang, Zhenhua Zhang, Long Li and Fangfang Liu
For a novel disturbance-free payload (DFP) spacecraft, it is difficult to isolate the low-frequency disturbances owing to the umbilical cables, which decreases the pointing accuracy and stability of the payload. In this research, an improved DFP spacecra...
ver más
|
|
|
|
|
|
|
|
|
|
|
Samuel Yankson and Mahdi Ghamkhari
The automatic generation control mechanism in power generators comes into operation whenever an over-supply or under-supply of energy occurs in the power grid. It has been shown that the automatic generation control mechanism is highly vulnerable to load...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nina N. Gakhova,Vladimir P. Pashintsev,Eugene K. Katkov,Tatyana V. Zaytseva,Tatyana N. Balabanova
The work deals with the issues of the determination of the probability of frequency-selective fading (FSF) of navigational radio signals in satellite radio navigation systems under artificial ionosphere disturbances. The connection between the coherence ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nantian Huang, Shuxin Zhang, Guowei Cai and Dianguo Xu
In a microgrid, the distributed generators (DG) can power the user loads directly. As a result, power quality (PQ) events are more likely to affect the users. This paper proposes a Multiresolution Generalized S-transform (MGST) approach to improve the ab...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ting Jin, Guohua Kang, Jian Cai, Shaoxia Jia, Jinghua Yang, Xinghua Zhang, Zhenhua Zhang, Long Li and Fangfang Liu
The low-frequency disturbances transmitted by flexible cables are difficult to be attenuated for a novel disturbance-free payload spacecraft, which decreases the payload?s pointing accuracy and stability. In this research, a new spacecraft configuration ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Oleg Vishnyakov, Pavel Polivanov and Andrey Sidorenko
The paper focuses on the investigation of unsteady effects in shock wave/boundary layer interaction. The study was carried out using a flat plate model subjected to a free stream Mach number of 1.43 and a unit Reynolds number (Re1) of 11.5 × 106 1/m. To ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Farhad Amiri, Mohsen Eskandari and Mohammad Hassan Moradi
The penetration of intermittent wind turbines in power systems imposes challenges to frequency stability. In this light, a new control method is presented in this paper by proposing a modified fractional order proportional integral derivative (FOPID) con...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yanxin Yin, Yinglei Jiang, Shicheng Liu and Hao Dong
Experimental and linear stability theory (LST) investigation of boundary layer transition on a flat plate was conducted with a flow of Mach number 5. The temperature distributions and second-mode disturbances on the flat plate surface at different unit R...
ver más
|
|
|
|
|
|
|
|
|
|
|
Majid Aleyaasin
In this paper, the vibration control of the multivariable model of rotor bearing systems is considered for investigation. Some simply structured controllers that can suppress vibrational disturbances are tested for their robustness via the H8 optimality ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuriy Zaspa,Aleksandr Dykha,Dmytro Marchenko,Serhii Matiukh,Yuri Kukurudzyak
Pág. 25 - 34
The physical mechanisms have been investigated that form and transform the corpuscular-vortex-wave thermal complexes of disturbances in contact tribosystems based on the quantum-mechanical exchange interaction. The presence of a contact gap determines th...
ver más
|
|
|
|
|
|
|
|
|
|
|
Paolo Carniti, Lorenzo Cassina, Marco Faverzani, Elena Ferri, Andrea Giachero, Claudio Gotti, Matteo Maino, Angelo Nucciotti, Gianluigi Pessina and Andrei Puiu
Microwave SQUID (Superconducting QUantum Interference Device) multiplexing is a suitable technique for reading a large number of detector channels, using only a few connecting lines. In the HOLMESexperiment, this is based on inductively coupled rf-SQUIDs...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ajit Krishnaswamy,Ellen Simmons,Larry Joseph
It is predicted that climate change has increased the frequency and intensity of natural disturbances and weather related natural disasters. Rural forest-based communities are especially vulnerable to changes in natural disturbance regimes influenced by ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Muhammed Alhanouti and Frank Gauterin
The regeneration of highly dynamic driving maneuvers on vehicle test benches is challenging due to several influences, such as power losses, vibrations in the overall system that involves the vehicle with the test bench, uncertainties in the model parame...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuan Liu and Changwu Jiang
This paper investigates a mixed-sensitivity control method for a class of drag-free spacecraft-needed frequency-separation control, which overcomes the coupled problem of a multiple-in multiple-out (MIMO) system with multiple sensitive-axes and disturban...
ver más
|
|
|
|
|
|
|
|
|
|
|
Esther Blumendeller, Ivo Kimmig, Gerhard Huber, Philipp Rettler and Po Wen Cheng
The expansion of renewable energy usage is one of the major social tasks in Europe and therefore requires acceptance and support from the population. In the case of onshore wind turbines, the complaints of local residents are often interpreted as infraso...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xiao Qi, Yan Bai, Huanhuan Luo, Yiqing Zhang, Guiping Zhou and Zhonghua Wei
With large-scale integration of electric vehicles, this paper investigates the load frequency control problem in an islanded microgrid with plug-in electric vehicles (PEVs), which can be regarded as mobile battery energy storages to provide a valuable co...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jun Yang, Zhili Zeng, Yufei Tang, Jun Yan, Haibo He and Yunliang Wu
In power systems, although the inertia energy in power sources can partly cover power unbalances caused by load disturbance or renewable energy fluctuation, it is still hard to maintain the frequency deviation within acceptable ranges. However, with the ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shuai Zhang, Heng Wang, Yan Pan, Yun Shao, Tao Zhang, Wei Huang, Yang Li and Bingjie Xu
Dual-polarization division multiplexing (DPDM) is considered to be a potential method to boost the secure key rate (SKR) of the continuous-variable quantum key distribution (CV-QKD) system. In this article, we propose a pilot alternately assisted local l...
ver más
|
|
|
|
|
|