The Experts below are selected from a list of 6024 Experts worldwide ranked by ideXlab platform

Mo-yuen Chow - One of the best experts on this subject based on the ideXlab platform.

  • incremental welfare consensus algorithm for cooperative Distributed Generation demand response in smart grid
    IEEE Transactions on Smart Grid, 2014
    Co-Authors: Navid Rahbariasr, Unnati Ojha, Ziang Zhang, Mo-yuen Chow
    Abstract:

    In this paper, we introduce the incremental welfare consensus algorithm for solving the energy management problem in a smart grid environment populated with Distributed generators and responsive demands. The proposed algorithm is Distributed and cooperative such that it eliminates the need for a central energy-management Unit, central price coordinator, or leader. The optimum energy solution is found through local peer-to-peer communications among smart devices. Each Distributed Generation Unit is connected to a local price regulator, as is each consumer Unit. In response to the price of energy proposed by the local price regulators, the power regulator on each Generation/consumer Unit determines the level of Generation/consumption power needed to optimize the benefit of the device. The consensus-based coordination among price regulators drives the behavior of the overall system toward the global optimum, despite the greedy behavior of each Unit. The primary advantages of the proposed approach are: 1) convergence to the global optimum without requiring a central controller/coordinator or leader, despite the greedy behavior at the individual level and limited communications; and 2) scalability in terms of per-node computation and communications burden.

  • incremental welfare consensus algorithm for cooperative Distributed Generation demand response in smart grid
    IEEE Transactions on Smart Grid, 2014
    Co-Authors: Navid Rahbariasr, Unnati Ojha, Ziang Zhang, Mo-yuen Chow
    Abstract:

    In this paper, we introduce the incremental welfare consensus algorithm for solving the energy management problem in a smart grid environment populated with Distributed generators and responsive demands. The proposed algorithm is Distributed and cooperative such that it eliminates the need for a central energy-management Unit, central price coordinator, or leader. The optimum energy solution is found through local peer-to-peer communications among smart devices. Each Distributed Generation Unit is connected to a local price regulator, as is each consumer Unit. In response to the price of energy proposed by the local price regulators, the power regulator on each Generation/consumer Unit determines the level of Generation/consumption power needed to optimize the benefit of the device. The consensus-based coordination among price regulators drives the behavior of the overall system toward the global optimum, despite the greedy behavior of each Unit. The primary advantages of the proposed approach are: 1) convergence to the global optimum without requiring a central controller/coordinator or leader, despite the greedy behavior at the individual level and limited communications; and 2) scalability in terms of per-node computation and communications burden.

Alireza Keyhani - One of the best experts on this subject based on the ideXlab platform.

  • a three phase four wire inverter control technique for a single Distributed Generation Unit in island mode
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    A control technique is developed for a three-phase four-wire split DC bus inverter of a single Distributed Generation Unit working in island mode. The control technique combines an inner discrete-time sliding mode controlled (DSMC) current loop and an outer robust servomechanism controlled voltage loop. The control algorithms are developed under stationary alphabeta0 (Clarke's) reference frame and a modified space vector pulsewidth modulation (MSVPWM) is proposed to implement the algorithm under Clarke's reference frame. The proposed technique achieves voltage regulation with low steady state error and low total harmonic distortion and fast transient response under various load disturbances. Meanwhile the usage of MSVPWM in a stationary alphabeta0 reference frame yields better transient performance under limited DC bus voltage compared to conventional uniformly sampled sine wave modulation in ABC reference frame. In this paper, besides the development and description of the algorithms, a series of discussions, analysis and studies are performed on the proposed control technique, including the L-C filter design issue, frequency domain closed-current-loop and closed-voltage-loop responses, and time domain simulations and experiments under various load conditions. All the analysis, simulations, and experiments demonstrate the effectiveness of the proposed control solution.

  • Power flow control of a single Distributed Generation Unit
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    This research addresses power flow control problem of a grid-connected inverter in Distributed Generation applica- tions. A real and reactive power control solution is proposed on the basis of an existing voltage control strategy developed for island operations. The power control solution takes advantage of a newly designed system parameter identification method and a nonlinear feedforward algorithm, both of which are based on Newton–Raphson iteration method and implemented in real time. The proposed power control solution also performs grid-line current conditioning and yields harmonic free grid-line current. A phase locked loop based algorithm is developed as a part of the solution to handle possible harmonic distorted grid-line voltage and maintain harmonic free line current. The effectiveness of the proposed techniques is demonstrated by both simulation and experimental results.

  • power flow control of a single Distributed Generation Unit with nonlinear local load
    IEEE PES Power Systems Conference and Exposition, 2004
    Co-Authors: Mohammad Nanda Marwali, Jin-woo Jung, Alireza Keyhani
    Abstract:

    Distributed Generation Units with small energy sources, such as fuel cells, micro-turbines, and photovoltaic devices, can be connected to utility grid as alternative energy sources besides providing power to their local loads. The Distributed Generation Units are interfaced with utility grid using three phase inverters. With inverter control, both active and reactive power pumped into the utility grid from the Distributed Generation Units can be controlled. Reactive power flow control allows the Distributed Generation Units to be used as static VAr compensation Units besides energy sources. This work presents a Distributed Generation Unit control technique which provides robust voltage regulation with harmonic elimination under island running mode and decoupled active and reactive power flow control under grid-connected mode. The control technique, which combines discrete-time sliding mode current control, robust servomechanism voltage control, and integral power control, enables seamless switching between island mode and grid-connected mode and guarantees sinusoidal line current waveform such nonlinear local load. The P Q coupling issue is addressed and the stability of the power control loop is proved using Lyapunov direct method.

Navid Rahbariasr - One of the best experts on this subject based on the ideXlab platform.

  • incremental welfare consensus algorithm for cooperative Distributed Generation demand response in smart grid
    IEEE Transactions on Smart Grid, 2014
    Co-Authors: Navid Rahbariasr, Unnati Ojha, Ziang Zhang, Mo-yuen Chow
    Abstract:

    In this paper, we introduce the incremental welfare consensus algorithm for solving the energy management problem in a smart grid environment populated with Distributed generators and responsive demands. The proposed algorithm is Distributed and cooperative such that it eliminates the need for a central energy-management Unit, central price coordinator, or leader. The optimum energy solution is found through local peer-to-peer communications among smart devices. Each Distributed Generation Unit is connected to a local price regulator, as is each consumer Unit. In response to the price of energy proposed by the local price regulators, the power regulator on each Generation/consumer Unit determines the level of Generation/consumption power needed to optimize the benefit of the device. The consensus-based coordination among price regulators drives the behavior of the overall system toward the global optimum, despite the greedy behavior of each Unit. The primary advantages of the proposed approach are: 1) convergence to the global optimum without requiring a central controller/coordinator or leader, despite the greedy behavior at the individual level and limited communications; and 2) scalability in terms of per-node computation and communications burden.

  • incremental welfare consensus algorithm for cooperative Distributed Generation demand response in smart grid
    IEEE Transactions on Smart Grid, 2014
    Co-Authors: Navid Rahbariasr, Unnati Ojha, Ziang Zhang, Mo-yuen Chow
    Abstract:

    In this paper, we introduce the incremental welfare consensus algorithm for solving the energy management problem in a smart grid environment populated with Distributed generators and responsive demands. The proposed algorithm is Distributed and cooperative such that it eliminates the need for a central energy-management Unit, central price coordinator, or leader. The optimum energy solution is found through local peer-to-peer communications among smart devices. Each Distributed Generation Unit is connected to a local price regulator, as is each consumer Unit. In response to the price of energy proposed by the local price regulators, the power regulator on each Generation/consumer Unit determines the level of Generation/consumption power needed to optimize the benefit of the device. The consensus-based coordination among price regulators drives the behavior of the overall system toward the global optimum, despite the greedy behavior of each Unit. The primary advantages of the proposed approach are: 1) convergence to the global optimum without requiring a central controller/coordinator or leader, despite the greedy behavior at the individual level and limited communications; and 2) scalability in terms of per-node computation and communications burden.

Min Dai - One of the best experts on this subject based on the ideXlab platform.

  • integration of green and renewable energy in electric power systems
    2009
    Co-Authors: A Keyhani, Mohammad Nanda Marwali, Min Dai
    Abstract:

    PREFACE. ACKNOWLEDGMENTS. 1 SMART GRID Distributed Generation SYSTEMS. 2 INVERTER CONTROL VOLTAGE AND CURRENT IN Distributed Generation SYSTEMS. 3 PARALLEL OPERATION OF INVERTERS IN Distributed Generation SYSTEMS. 4 POWER CONVERTER TOPOLOGIES FOR Distributed Generation SYSTEMS. 5 VOLTAGE AND CURRENT CONTROL OF A THREE-PHASE FOUR-WIRE Distributed Generation (DG) INVERTER IN ISLAND MODE. 6 POWER FLOW CONTROL OF A SINGLE Distributed Generation Unit. 7 ROBUST STABILITY ANALYSIS OF VOLTAGE AND CURRENT CONTROL FOR Distributed Generation SYSTEMS. 8 PWM RECTIFIER CONTROL FOR THREE-PHASE Distributed Generation SYSTEM. 9 MATLAB SIMULINK SIMULATION TESTBED. APPENDIX A: SIMULINK MODEL DSIMSERVO.MDL. APPENDIX B: FILE SSMODE.M. BIBLIOGRAPHY. INDEX.

  • a three phase four wire inverter control technique for a single Distributed Generation Unit in island mode
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    A control technique is developed for a three-phase four-wire split DC bus inverter of a single Distributed Generation Unit working in island mode. The control technique combines an inner discrete-time sliding mode controlled (DSMC) current loop and an outer robust servomechanism controlled voltage loop. The control algorithms are developed under stationary alphabeta0 (Clarke's) reference frame and a modified space vector pulsewidth modulation (MSVPWM) is proposed to implement the algorithm under Clarke's reference frame. The proposed technique achieves voltage regulation with low steady state error and low total harmonic distortion and fast transient response under various load disturbances. Meanwhile the usage of MSVPWM in a stationary alphabeta0 reference frame yields better transient performance under limited DC bus voltage compared to conventional uniformly sampled sine wave modulation in ABC reference frame. In this paper, besides the development and description of the algorithms, a series of discussions, analysis and studies are performed on the proposed control technique, including the L-C filter design issue, frequency domain closed-current-loop and closed-voltage-loop responses, and time domain simulations and experiments under various load conditions. All the analysis, simulations, and experiments demonstrate the effectiveness of the proposed control solution.

  • Power flow control of a single Distributed Generation Unit
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    This research addresses power flow control problem of a grid-connected inverter in Distributed Generation applica- tions. A real and reactive power control solution is proposed on the basis of an existing voltage control strategy developed for island operations. The power control solution takes advantage of a newly designed system parameter identification method and a nonlinear feedforward algorithm, both of which are based on Newton–Raphson iteration method and implemented in real time. The proposed power control solution also performs grid-line current conditioning and yields harmonic free grid-line current. A phase locked loop based algorithm is developed as a part of the solution to handle possible harmonic distorted grid-line voltage and maintain harmonic free line current. The effectiveness of the proposed techniques is demonstrated by both simulation and experimental results.

Mohammad Nanda Marwali - One of the best experts on this subject based on the ideXlab platform.

  • integration of green and renewable energy in electric power systems
    2009
    Co-Authors: A Keyhani, Mohammad Nanda Marwali, Min Dai
    Abstract:

    PREFACE. ACKNOWLEDGMENTS. 1 SMART GRID Distributed Generation SYSTEMS. 2 INVERTER CONTROL VOLTAGE AND CURRENT IN Distributed Generation SYSTEMS. 3 PARALLEL OPERATION OF INVERTERS IN Distributed Generation SYSTEMS. 4 POWER CONVERTER TOPOLOGIES FOR Distributed Generation SYSTEMS. 5 VOLTAGE AND CURRENT CONTROL OF A THREE-PHASE FOUR-WIRE Distributed Generation (DG) INVERTER IN ISLAND MODE. 6 POWER FLOW CONTROL OF A SINGLE Distributed Generation Unit. 7 ROBUST STABILITY ANALYSIS OF VOLTAGE AND CURRENT CONTROL FOR Distributed Generation SYSTEMS. 8 PWM RECTIFIER CONTROL FOR THREE-PHASE Distributed Generation SYSTEM. 9 MATLAB SIMULINK SIMULATION TESTBED. APPENDIX A: SIMULINK MODEL DSIMSERVO.MDL. APPENDIX B: FILE SSMODE.M. BIBLIOGRAPHY. INDEX.

  • a three phase four wire inverter control technique for a single Distributed Generation Unit in island mode
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    A control technique is developed for a three-phase four-wire split DC bus inverter of a single Distributed Generation Unit working in island mode. The control technique combines an inner discrete-time sliding mode controlled (DSMC) current loop and an outer robust servomechanism controlled voltage loop. The control algorithms are developed under stationary alphabeta0 (Clarke's) reference frame and a modified space vector pulsewidth modulation (MSVPWM) is proposed to implement the algorithm under Clarke's reference frame. The proposed technique achieves voltage regulation with low steady state error and low total harmonic distortion and fast transient response under various load disturbances. Meanwhile the usage of MSVPWM in a stationary alphabeta0 reference frame yields better transient performance under limited DC bus voltage compared to conventional uniformly sampled sine wave modulation in ABC reference frame. In this paper, besides the development and description of the algorithms, a series of discussions, analysis and studies are performed on the proposed control technique, including the L-C filter design issue, frequency domain closed-current-loop and closed-voltage-loop responses, and time domain simulations and experiments under various load conditions. All the analysis, simulations, and experiments demonstrate the effectiveness of the proposed control solution.

  • Power flow control of a single Distributed Generation Unit
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Min Dai, Jin-woo Jung, Mohammad Nanda Marwali, Alireza Keyhani
    Abstract:

    This research addresses power flow control problem of a grid-connected inverter in Distributed Generation applica- tions. A real and reactive power control solution is proposed on the basis of an existing voltage control strategy developed for island operations. The power control solution takes advantage of a newly designed system parameter identification method and a nonlinear feedforward algorithm, both of which are based on Newton–Raphson iteration method and implemented in real time. The proposed power control solution also performs grid-line current conditioning and yields harmonic free grid-line current. A phase locked loop based algorithm is developed as a part of the solution to handle possible harmonic distorted grid-line voltage and maintain harmonic free line current. The effectiveness of the proposed techniques is demonstrated by both simulation and experimental results.

  • power flow control of a single Distributed Generation Unit with nonlinear local load
    IEEE PES Power Systems Conference and Exposition, 2004
    Co-Authors: Mohammad Nanda Marwali, Jin-woo Jung, Alireza Keyhani
    Abstract:

    Distributed Generation Units with small energy sources, such as fuel cells, micro-turbines, and photovoltaic devices, can be connected to utility grid as alternative energy sources besides providing power to their local loads. The Distributed Generation Units are interfaced with utility grid using three phase inverters. With inverter control, both active and reactive power pumped into the utility grid from the Distributed Generation Units can be controlled. Reactive power flow control allows the Distributed Generation Units to be used as static VAr compensation Units besides energy sources. This work presents a Distributed Generation Unit control technique which provides robust voltage regulation with harmonic elimination under island running mode and decoupled active and reactive power flow control under grid-connected mode. The control technique, which combines discrete-time sliding mode current control, robust servomechanism voltage control, and integral power control, enables seamless switching between island mode and grid-connected mode and guarantees sinusoidal line current waveform such nonlinear local load. The P Q coupling issue is addressed and the stability of the power control loop is proved using Lyapunov direct method.