The Experts below are selected from a list of 17793 Experts worldwide ranked by ideXlab platform

Zhi Ding - One of the best experts on this subject based on the ideXlab platform.

  • distributed power control for cognitive user access based on primary link control feedback
    International Conference on Computer Communications, 2010
    Co-Authors: Senhua Huang, Xin Liu, Zhi Ding
    Abstract:

    We venture beyond the "listen-before-talk" strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary communication systems. By intelligently choosing their transmission parameters based on the observation of primary user (PU) communications, secondary users (SUs) in a cognitive network can achieve higher spectrum usage while limiting their interference to the PU. Specifically, we propose that the SUs listen to the PU's feedback channel to assess their interference on the primary receiver (PU-Rx), and adjust radio power accordingly to satisfy the PU's interference constraint. We investigate both centralized and distributed power control algorithms without active PU cooperation. We show that the PU feedback information inherent in many two-way primary systems can be used as important Coordination Signal among multiple SUs to distributively achieve a joint performance guarantee on the primary receiver's quality of service.

Senhua Huang - One of the best experts on this subject based on the ideXlab platform.

  • distributed power control for cognitive user access based on primary link control feedback
    International Conference on Computer Communications, 2010
    Co-Authors: Senhua Huang, Xin Liu, Zhi Ding
    Abstract:

    We venture beyond the "listen-before-talk" strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary communication systems. By intelligently choosing their transmission parameters based on the observation of primary user (PU) communications, secondary users (SUs) in a cognitive network can achieve higher spectrum usage while limiting their interference to the PU. Specifically, we propose that the SUs listen to the PU's feedback channel to assess their interference on the primary receiver (PU-Rx), and adjust radio power accordingly to satisfy the PU's interference constraint. We investigate both centralized and distributed power control algorithms without active PU cooperation. We show that the PU feedback information inherent in many two-way primary systems can be used as important Coordination Signal among multiple SUs to distributively achieve a joint performance guarantee on the primary receiver's quality of service.

Pulgar-painemal Hector - One of the best experts on this subject based on the ideXlab platform.

  • Control Coordination between DFIG-based wind turbines and synchronous generators for optimal primary frequency response
    2020
    Co-Authors: Morovati Samaneh, Pulgar-painemal Hector
    Abstract:

    This paper proposes a novel coordinating mechanism between synchronous generators (SGs) and wind turbines (WTs) based on doubly-fed induction generators (DFIGs) for enhanced primary frequency regulation. WTs are urged to participate on frequency regulation, specially if wind power penetration keeps increasing. WTs control support is possible, but it is transient due to the WTs lack of energy storage. This drawback can result in either a further delayed response from the governors of SGs or further frequency decay when WTs support is over. The proposed Coordination attempt to tackle this issue. An artificial neural network (ANN) is used to obtain an optimal Coordination Signal to improve frequency response. As a proof of concept, the proposed Coordination is tested on a 9-bus test system that includes a wind farm with 5 WTs. Simulation results show that frequency nadir is reduced in about 22\% and rates of change of the system frequency (RoCoF) in about 29.5\%. Further work is needed to validate this concept in large-scale systems, but the development and results obtained so far are promising to strengthen power systems.Comment: Accepted by 52nd North American Power Symposium (NAPS

Xin Liu - One of the best experts on this subject based on the ideXlab platform.

  • distributed power control for cognitive user access based on primary link control feedback
    International Conference on Computer Communications, 2010
    Co-Authors: Senhua Huang, Xin Liu, Zhi Ding
    Abstract:

    We venture beyond the "listen-before-talk" strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary communication systems. By intelligently choosing their transmission parameters based on the observation of primary user (PU) communications, secondary users (SUs) in a cognitive network can achieve higher spectrum usage while limiting their interference to the PU. Specifically, we propose that the SUs listen to the PU's feedback channel to assess their interference on the primary receiver (PU-Rx), and adjust radio power accordingly to satisfy the PU's interference constraint. We investigate both centralized and distributed power control algorithms without active PU cooperation. We show that the PU feedback information inherent in many two-way primary systems can be used as important Coordination Signal among multiple SUs to distributively achieve a joint performance guarantee on the primary receiver's quality of service.

Morovati Samaneh - One of the best experts on this subject based on the ideXlab platform.

  • Control Coordination between DFIG-based wind turbines and synchronous generators for optimal primary frequency response
    2020
    Co-Authors: Morovati Samaneh, Pulgar-painemal Hector
    Abstract:

    This paper proposes a novel coordinating mechanism between synchronous generators (SGs) and wind turbines (WTs) based on doubly-fed induction generators (DFIGs) for enhanced primary frequency regulation. WTs are urged to participate on frequency regulation, specially if wind power penetration keeps increasing. WTs control support is possible, but it is transient due to the WTs lack of energy storage. This drawback can result in either a further delayed response from the governors of SGs or further frequency decay when WTs support is over. The proposed Coordination attempt to tackle this issue. An artificial neural network (ANN) is used to obtain an optimal Coordination Signal to improve frequency response. As a proof of concept, the proposed Coordination is tested on a 9-bus test system that includes a wind farm with 5 WTs. Simulation results show that frequency nadir is reduced in about 22\% and rates of change of the system frequency (RoCoF) in about 29.5\%. Further work is needed to validate this concept in large-scale systems, but the development and results obtained so far are promising to strengthen power systems.Comment: Accepted by 52nd North American Power Symposium (NAPS