Results 211 to 220 of about 3,882,562 (249)
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Decentralized complex envelope controller for ASAC by virtual mechanical impedances
2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2014The problem of Active Structural Acoustic Control (ASAC) is to attenuate the radiated sound power by energy injection using structural actuators to modify deflection shapes. Collocated and dual actuator-sensor pairs allow the feedback problem to be formulated as the implementation of virtual mechanical impedances.
Michau, Marc +4 more
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Virtual Impedance Shaping for low voltage Microgrids
2020 IEEE Applied Power Electronics Conference and Exposition (APEC), 2020AC Microgrids, in presence of highly non-linear loads, require a tighter regulation of line voltage to maintain power quality. This article proposes an outer virtual impedance loop to shape the output voltage in such microgrids. In order to achieve this, a virtual impedance extracting and shaping filter is first proposed to extract and weigh selected ...
Sourav Patel +3 more
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Parameter Optimization of Virtual Impedance for Parallel Inverter
Advanced Materials Research, 2014This paper deals with parameter optimization of virtual impedance of parallel inverter. Conventional design methods determine parameters by observing the changes of amplitude-frequency and phase frequency curves of the equivalent impedance. However, those methods always neglect the dynamic performance of inverters in parallel.
Ping Wang, Liu Yang
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Virtual impedance for droop control
Conventional droop control for parallel Grid-Forming Inverters (GFMIs) relies on the assumption of highly inductive transmission lines to decouple active and reactive power. However, in low-voltage grids where transmission lines are predominantly resistive, this assumption fails, leading to power coupling, power-sharing inaccuracies, and system ...openaire +1 more source
2022 IEEE International Conference on Electro Information Technology (eIT), 2022
Ramkrishna Mishan +3 more
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Ramkrishna Mishan +3 more
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Virtual mass of impedance system for free-flying target capture
2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010This paper discusses the target motion around the contact in the satellite capture operation using a free-flying space robot. The contact force has the potential for pushing the target beyond the manipulator reach or making the target have a tumbling motion. An impedance control is useful to prevent the robot hand from pushing the target.
Hiroki Nakanishi +2 more
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Virtual Impedance Current Limiting for Inverters in Microgrids With Synchronous Generators
IEEE Transactions on Industry Applications, 2013This paper focuses on current limiting for voltage controlled inverters during overloads caused by poor transient load sharing between inverters and synchronous generators in islanded microgrids. The use of simple current reference saturation limiters can cause instability when the voltage regulator loses control after the current reference saturates ...
Andrew D. Paquette, Deepak M. Divan
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An improved droop control with tunable virtual impedance
2016 Chinese Control and Decision Conference (CCDC), 2016A droop control with tunable virtual impedance based on the cloud model theory is proposed in the paper. Because of the imbalance feeder impedance in low voltage micro-grid, it is difficult for the traditional droop control to get good performance. The tunable virtual impedance is needed to conquer these problems due to the difficulty of getting the ...
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