Results 61 to 70 of about 3,738,904 (156)

Self-Tuning Parameters of the Proposed Fuzzy Immune Integral Controller to Improve the Performance of the Standard P&O-MPPT Strategy

IEEE Access
This paper proposes the automatic parameter tuning of the proposed fuzzy immune controller. It is cascaded with the control employing the perturb and observe (P&O) algorithm, resulting in a new maximum power point tracking (MPPT) strategy, called ...
Ramazan Ayaz
doaj   +1 more source

Cramer-Rao Bound for Sparse Signals Fitting the Low-Rank Model with Small Number of Parameters

, 2015
In this paper, we consider signals with a low-rank covariance matrix which reside in a low-dimensional subspace and can be written in terms of a finite (small) number of parameters. Although such signals do not necessarily have a sparse representation in
Shaghaghi, Mahdi, Vorobyov, Sergiy A.
core   +1 more source

TRIPPy: Trailed Image Photometry in Python [PDF]

, 2016
Photometry of moving sources typically suffers from reduced signal-to-noise (SNR) or flux measurements biased to incorrect low values through the use of circular apertures.
Alexandersen, Mike, Bannister, Michele T., Benecchi, Susan, Delsanti, Audrey, Fraser, Wesley C., Kavelaars, JJ, Marsset, Michael E., Pike, Rosemary E., Schwamb, Megan E.   +8 more
core   +4 more sources

Reduced-Order Model for Dynamic Stability Analysis of Single-Phase Islanded Microgrid With BPF-Based Droop Control Scheme

IEEE Access, 2019
By introducing a feedback path in the conventional droop control loop of islanded microgrid, the voltage amplitude and frequency restoration can be effectively achieved by using the secondary control.
Yang Han, Mengling Yang, Ping Yang, Lin Xu, Xu Fang, Ke Zhang, Frede Blaabjerg   +6 more
doaj   +1 more source

Investigation of the Hammerstein hypothesis in the modeling of electrically stimulated muscle [PDF]

, 1998
To restore functional use of paralyzed muscles by automatically controlled stimulation, an accurate quantitative model of the stimulated muscles is desirable.
Barr, F.M.D., Donaldson, N.D., Hunt, K.J., Munih, M.   +3 more
core   +1 more source

Stability analysis of q-axis rotor flux based model reference adaptive system updating rotor time constant in induction motor drives

CES Transactions on Electrical Machines and Systems, 2017
q-axis rotor flux can be chosen to form a model reference adaptive system (MRAS) updating rotor time constant online in induction motor drives. This paper presents a stability analysis of such a system with Popov's hyperstability concept and small-signal
Shuying Yang, Pengpeng Cao, Xing Zhang
doaj   +1 more source

Power extraction from ambient vibration [PDF]

, 2001
Autonomous devices such as sensors for personal area networks need a long battery lifetime in a small volume. The battery size can be reduced by incorporating micro-power generators based on ambient energy.
Baert, Kris, Borghs, Gustaaf, Puers, Robert, Sterken, Tom   +3 more
core   +1 more source

The test case of HD26965: difficulties disentangling weak Doppler signals from stellar activity

, 2018
We report the discovery of a radial velocity signal that can be interpreted as a planetary-mass candidate orbiting the K dwarf HD26965, with an orbital period of 42.364$\pm$0.015 days, or alternatively, as the presence of residual, uncorrected rotational
Arriagada, Pamela, Butler, R. Paul, Crane, Jeffrey D., Díaz, Matías R., Feng, Fabo, Jenkins, James S., Shectman, Stephen A., Soto, Maritza G., Teske, Johanna K., Thompson, Ian B., Tuomi, Mikko, Vogt, Steven S.   +11 more
core   +1 more source

Small-Signal Modeling of PMSG-Based Wind Turbine for Low Voltage Ride-Through and Artificial Intelligent Studies

Energies, 2020
In recent years, due to the several advantages of permanent magnet synchronous generator (PMSG), the number of wind farms utilizing this technology has been significantly grown.
Mojtaba Nasiri, Saleh Mobayen, Behdad Faridpak, Afef Fekih, Arthur Chang   +4 more
doaj   +1 more source

Research on Improved VSG Control Algorithm Based on Capacity-Limited Energy Storage System

Energies, 2018
A large scale of renewable energy employing grid connected electronic inverters fail to contribute inertia or damping to power systems, and, therefore, may bring negative effects to the stability of power system.
Yanfeng Ma, Zijian Lin, Rennan Yu, Shuqiang Zhao   +3 more
doaj   +1 more source