Results 11 to 20 of about 19,040 (262)

Power Quality State Estimation for Distribution Grids Based on Physics-Aware Neural Networks—Harmonic State Estimation

Energies
In the transition from traditional electrical energy generation with mainly linear sources to increasing inverter-based distributed generation, electrical power systems’ power quality requires new monitoring methods.
Patrick Mack, Markus de Koster, Patrick Lehnen, Eberhard Waffenschmidt, Ingo Stadler   +4 more
doaj   +3 more sources

Harmonic Distortion State Estimation Using an Evolutionary Strategy [PDF]

IEEE Transactions on Power Delivery, 2010
This paper presents a new methodology to estimate harmonic distortions in a power system, based on measurements of a limited number of given sites. The algorithm utilizes evolutionary strategies (ES), a development branch of evolutionary algorithms.
Arruda, de, E.F., Kagan, N., Ribeiro, P.F.   +2 more
openaire   +2 more sources

A Compressive Sensing Based Method for Harmonic State Estimation

CoRR, 2023
Power quality monitoring has become a vital need in modern power systems owing to the need for agile operation and troubleshooting scheme. On the other hand, the nature of load in modern power system is changing in many ways. Digital loads, which are mostly relied on power electronic equipment, may distort the quality of power flowing through the ...
openaire   +3 more sources

A Robust and Low Computational Cost Pitch Estimation Method

Sensors, 2022
Pitch estimation is widely used in speech and audio signal processing. However, the current methods of modeling harmonic structure used for pitch estimation cannot always match the harmonic distribution of actual signals.
Desheng Wang, Yangjie Wei, Yi Wang, Jing Wang   +3 more
doaj   +1 more source

Harmonic Reducer Performance Prediction Algorithm Based on Multivariate State Estimation and LargeVis Dimensionality Reduction

IEEE Access, 2023
As an important transmission component of industrial robots, the harmonic reducer determines the positioning accuracy, bearing capacity and service life of the robot end-effector.
Yiyang Zhao, Peixing Li, Haolun Ding, Jiabin Cao, Weixin Yan   +4 more
doaj   +1 more source

Analysis of least-squares state estimators for a harmonic oscillator

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002
The concept of least-squares observer is revisited. Robustness properties of this class of observers with respect to norm-bounded measurement noise are investigated and shown to be very much dependent on the operator chosen for the observer implementation.
Bask, Michael, Medvedev, Alexander
openaire   +4 more sources

Estimation of crossbridge-state during cardiomyocyte beating using second harmonic generation

Life Science Alliance, 2023
This article describes a new method to evaluate the actomyosin activity in living cardiomyocytes during beating based on nonlinear scattering microscopy, which will be useful for elucidating cardiomyopathy mechanisms, efficacy of an intervention, and ...
Hideaki Fujita, Junichi Kaneshiro, Maki Takeda, Kensuke Sasaki, Rikako Yamamoto, Daiki Umetsu, Erina Kuranaga, Shuichiro Higo, Takumi Kondo, Yoshihiro Asano, Yasushi Sakata, Shigeru Miyagawa, Tomonobu M Watanabe   +12 more
doaj   +1 more source

Harmonic source localization method for the port distribution system based on the stagewise regularized orthogonal matching pursuit algorithm

Frontiers in Energy Research, 2023
The application of power electronic technology which is widely used in large mechanical equipment of ports causes inevitable harmonic pollution issues.
Ruixiang Yang, Moduo Yu, Nengling Tai, Ruochen Duan, Chao Lu   +4 more
doaj   +1 more source

Robust Estimation and Tracking of Power System Harmonics Using an Optimal Finite Impulse Response Filter

Energies, 2018
In this paper, a robust estimation method for estimating the power system harmonics is proposed by using the optimal finite impulse response (FIR) filter. The optimal FIR filter is applied to the state space representation of the noisy current or voltage
Bo-kyu Kwon, Soohee Han, Kwang Y. Lee
doaj   +1 more source

Quantitative damping reshaping method based on equivalent RLC circuits using an active damper

IET Power Electronics, 2023
Large scale power electronic converters in renewable energy power system (REPS) constitute a complex multi‐scale high‐order non‐linear network. Harmonic amplitude amplification of specific frequency (e.g.
Fei Li, Qiang Feng, Yichao Wang, Hanyu Wang, Mingyao Ma, Xing Zhang   +5 more
doaj   +1 more source