Results 31 to 40 of about 3,309,056 (196)

Wide‐Band Harmonic Resonance Damping Strategy for Grid‐Connected Digitally Controlled LCL‐Type Inverter

IET Power Electronics
Digitally controlled LCL‐type inverter is widely applied in grid‐connected renewable energy generation system, and its harmonics resonance damping performance is critical to the stable operation and output power quality of system.
Jinhong Liu, Xiaobing Zhang, Baohua Wang
doaj   +1 more source

A novel robust active damping control strategy based on H∞ loop shaping for the grid-tied LCL inverter

Frontiers in Energy Research
LCL-type grid-connected inverters have been widely used in renewable power generation due to their size and cost advantages. However, the LCL filter has a problem of insufficient damping, which may lead to power system instability. Two common methods are
Wenju Sang, Wenju Sang, Wenyong Guo, Gang Xu, Tongzhen Wei, Tongzhen Wei, Changli Shi, Changli Shi, Zongjie Liu, Han Xue, Zhenning He, Junzhi Li, Jiazhen Shen, Ruiqi Min, Shaobo Song, Xiaoxu Li, Yun Hong   +16 more
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On the Role of Nonsynchronous Rotating Damping in Rotordynamics

International Journal of Rotating Machinery, 2000
Nonsynchronous rotating damping, i.e. energy dissipations occurring in elements rotating at a speed different from the spin speed of a rotor, can have substantial effects on the dynamic behaviour and above all on the stability of rotating systems.
Giancarlo Genta, Eugenio Brusa
doaj   +1 more source

Resonance Suppression Method Based on Virtual Filter for Grid-Following and Grid-Forming Converter Interconnected Systems

Applied Sciences
With the advancement of power electronics technology, converters achieve compactness and high power density by increasing switching frequency and reducing passive components.
Lei Zhang, Guoju Zhang, Xu Liu, Peng Yang, Wei Pei   +4 more
doaj   +1 more source

Truly optimal semi-active damping to control free vibration of a single degree of freedom system

Theoretical and Applied Mechanics Letters
This paper studies a single degree of freedom system under free vibration and controlled by a general semi-active damping. A general integral of squared error is considered as the performance index. A one-time switching damping controller is proposed and
Viet Duc La, Ngoc Tuan Nguyen
doaj   +1 more source

Active damping of multidimensional mechanic systems

MATEC Web of Conferences, 2017
At many motion control tasks, the problem of oscillations existence in multidimensional system with limited motion control and imperfect or complicated state quantities measurement possibility exists.
Úředníček Zdeněk, Maloch Jaroslav
doaj   +1 more source

Performance comparison of passive series R and shunt R-C damped LCL filter for grid-connected inverters

The Journal of Engineering, 2019
LCL filters are widely used in distributed power-generation systems to attenuate high-frequency harmonics caused by pulse-width modulation switching of grid-connected inverters. A resonance occurs due to the series-connected reactive components. In order
Hakan Temiz, Erhan Demirok, Ozan Keysan, Ali Türkay, Burak Çetinkaya   +4 more
doaj   +1 more source

Multi-SIN-Based Real-Time Impedance Estimation for Self-Commissioning Controller and Active Damping in an LCL-Grid-Tied VSI

IEEE Open Journal of Industry Applications
This article introduces a novel method for self-commissioning controllers and active damping in LCL grid-tied three-phase voltage source inverters. The proposed impedance estimation method is designed with the goal of minimizing invasiveness on the grid ...
Giovanni Marini, Nicolas Baschera, Alessandro Lidozzi, Marco di Benedetto, Luca Solero   +4 more
doaj   +1 more source

Semi-Active Cable Damping to Compensate for Damping Losses Due to Reduced Cable Motion Close to Cable Anchor

Applied Sciences, 2022
The relative motion of transverse cable dampers is smaller than predicted by the taut string model because of the effects of bending stiffness and fixed support conditions.
Felix Weber, Simon Spensberger, Florian Obholzer, Johann Distl, Christian Braun   +4 more
doaj   +1 more source

PASSIVE DAMPING OF SPACECRAFT SANDWICH PANELS [PDF]

, 2007
For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension
Romberg, Oliver, Tausche, Matthias, Tausche, M., Pereira, C., Pereira, Carlos, Panning, Lars, Panning, L.   +6 more
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