Results 31 to 40 of about 441,873 (190)

Islanding detection method with negative-sequence current injection under unbalanced grid voltage

2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC), 2015
This paper proposes an active islanding detection method for the BESS (Battery Energy Storage System) with a three-phase inverter which is connected to the unbalanced AC grid. The proposed method adopts the DDSRF (Decoupled Double Synchronous Reference Frame) PLL (Phase-Locked Loop) so that the independent control of positive-sequence and negative ...
null Hyun-Jun Kim, null Do-Hyun Kim, null Byung-Moon Han   +2 more
openaire   +2 more sources

High-frequency issues using rotating voltage injections intended for position self-sensing [PDF]

, 2013
The rotor position is required in many control schemes in electrical drives. Replacing position sensors by machine self-sensing estimators increases reliability and reduces cost. Solutions based on tracking magnetic anisotropies through the monitoring of
De Belie, Frederik, Gabriel, Fabien, Lataire, Philippe, Neyt, Xavier   +3 more
core   +1 more source

Submodule Capacitor Voltage Ripple Reduction of Full-Bridge Submodule-Based MMC (FBSM-MMC) with Non-Sinusoidal Voltage Injection

Energies, 2023
The full-bridge submodule (FBSM)-based modular multilevel converter (FBSM-MMC) offers promising performance due to its ability to output negative FBSM voltage.
Ming Huang
doaj   +1 more source

Electric field requirements for charge packet generation and movement in XLPE [PDF]

, 2001
The formation of space charge packets in XLPE (Cross-linked polyethylene) tapes from unaged cable insulation has been studied utilising the pulsed electro-acoustic (PEA) technique.
Dissado, L. A., Fothergill, J., Seeley, A.   +2 more
core   +1 more source

Injection Harmonic Current Differential Protection Based on Control-Protection Synergy for Distribution Networks with IBDGs

Applied Sciences, 2023
The high penetration of inverter-based distributed generations (IBDGs) leads to traditional distribution networks’ complex and variable fault characteristics.
Chengao Yu, Zhanjun Gao, Zhao Liu, Zhengchen Tao   +3 more
doaj   +1 more source

Remote power control strategy based on virtual flux approach for the grid tied power converters [PDF]

, 2018
The control of active and reactive power for the Renewable Energy Sources (RES) based power plants are very important. The injection of active and reactive power to the grid is normally controlled at the Point of Common Connection (PCC) where this point ...
Candela García, José Ignacio, Fazlin Roslan, Nurul, Luna Alloza, Álvaro, Rocabert Delgado, Joan, Rodríguez Cortés, Pedro   +4 more
core   +1 more source

Regression/eradication of gliomas in mice by a systemically-deliverable ATF5 dominant-negative peptide. [PDF]

, 2016
Malignant gliomas have poor prognosis and urgently require new therapies. Activating Transcription Factor 5 (ATF5) is highly expressed in gliomas, and interference with its expression/function precipitates targeted glioma cell apoptosis in vitro and in ...
Angelastro, James, Arias, Angelo, Cates, Charles, Cayanan, Geraldine, Fung, Jennifer, Greene, Lloyd, Karpel-Massler, Georg, Lamé, Michael, Nakayama Wong, Lynn, Rowland, Douglas, Sidorov, Maxim, Siegelin, Markus   +11 more
core   +2 more sources

Coordinated LVRT Support for a PMSG-Based Wind Energy Conversion System Integrated into a Weak AC-Grid

Energies, 2021
In a grid, the choice of the point of common coupling (PCC) does not solely rely on the voltage level alone but also conjointly depends on the grid strength for many explicit purposes.
Akrama Khan, Hasnain Ahmad, Syed Muhammad Ahsan, Muhammad Majid Gulzar, Sadia Murawwat   +4 more
doaj   +1 more source

Cross-Saturation Effects in IPM Motors and Related Impact on Sensorless Control [PDF]

, 2006
Permanent-magnet-assisted synchronous reluctance motors are well suited to zero-speed sensorless control because of their inherently salient behavior. However, the cross-saturation effect can lead to large errors on the position estimate, which is based ...
Guglielmi, Paolo, Pastorelli, Michele Angelo, Vagati, Alfredo   +2 more
core   +2 more sources

Adaptive current-limiting control for grid-forming converter during unbalanced faults

International Journal of Electrical Power & Energy Systems
Grid-forming converters are increasingly deployed to connect renewable energy sources to the grid, but their control behavior during unbalanced grid faults can affect system stability and protection.
Xinquan Chen, Zhe Yang
doaj   +1 more source