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Forced vibration of a sheet under periodic aerodynamic excitation

Nihon Kikai Gakkai ronbunshu, 2020
This paper describes vibration characteristics of a cantilevered flexible sheet under the periodic aerodynamic excitation. In the experiment, movable plates(exciter) are set at the upstream side from the sheet in a wind-tunnel.
Keiichi HIROAKI, Daiki KATOU, Masahiro WATANABE +2 more
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Adaptive Inertia Control for Virtual Synchronous Generators to Enhance Response Performance of a Wind-Solar-Storage Combined Power Generation System

CSEE Journal of Power and Energy Systems
The damage of extreme disasters to a power grid is becoming increasingly severe, and energy storage control technology is emerging as a measure to enhance grid resilience. In this study, a novel adaptive inertia control for virtual synchronous generators
Haibo Zhang, Haoyu Zhu, Zhe Zhang, Xianfu Gong +3 more
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Adaptive Performance Tuning for Voltage-Sourced Converters with Frequency Responses

Applied Sciences, 2020
Renewable generation brings both new energies and significant challenges to the evolving power system. To cope with the loss of inertia caused by inertialess power electronic interfaces (PEIs), the concept of the virtual synchronous generator (VSG) has ...
Weichao Zhang, Xiangwu Yan, Hanyan Huang
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The Fractional Orthogonal Derivative

Mathematics, 2015
This paper builds on the notion of the so-called orthogonal derivative, where an n-th order derivative is approximated by an integral involving an orthogonal polynomial of degree n.
Enno Diekema
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A Study on Improving Switching Characteristics According to a Circuit Analysis Technique in Converter Applications Using Gallium Nitride Field Effect Transistors

Energies, 2019
In this paper, we studied how the switching characteristics of a power conversion system could be improved using gallium nitride (GaN) devices.
Tae-Kue Kim
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Characterisation of Harmonic Resonance Phenomenon of Multi-Parallel PV Inverter Systems: Modelling and Analysis

Energies
Solar PV inverters require output filters to reduce unwanted harmonics in their output, where LCL filters are a more economical choice than larger inductance-only filters. A drawback of these filters is that they can introduce power quality disturbances,
Kasun Peiris +3 more
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A simplified method for estimating bridge frequency effects considering train mass

Frontiers in Built Environment
The dynamic response of a railway bridge depends on several parameters; the primary parameter is the fundamental natural frequency of vibration of the bridge itself.
Aminur K. Rahman, Boulent Imam, Donya Hajializadeh +2 more
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Dynamic Analysis of AFM in Air and Liquid Environments Considering Linear and Non-linear Interaction Forces by Timoshenko Beam Model [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2015
The atomic force microscopy of the cantilever beam frequency response behaviour in the liquid environment is different in comparison with air environment.
P. Maleki Moghadam Abyaneh +3 more
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An analytical approach for power system frequency stability evaluation

IET Generation, Transmission & Distribution
Recent years have seen high penetration of renewable energies, which have significantly reduced the inertia of bulk power systems. As a result, the frequency behaviour of power systems is becoming more complex.
Zhenyao Li, Jing Li, Deqiang Gan
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Cooperative Control of TSO and DSO: Management of Line Congestion and Frequency Response

IEEE Access
The separation of transmission and distribution systems raises a variety of questions concerning the integration of many distributed generators (DGs) into future grids. They are difficult to solve by using current energy management methods.
Kipo Yoon +3 more
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resonance
frequency control