The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform
Shadab Murshid - One of the best experts on this subject based on the ideXlab platform.
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Performance Investigation of Multifunctional On-Grid Hybrid Wind–PV System With OASC and MAF-Based Control
IEEE Transactions on Power Electronics, 2019Co-Authors: Subarni Pradhan, Shadab Murshid, Bhim Singh, Bijaya Ketan PanigrahiAbstract:An Observer-based adaptive speed control (OASC) and a multistage adaptive filter (MAF) based control structure are proposed for an on-grid hybrid wind-photovoltaic (PV) system to deal with the two major issues such as peak wind power extraction and mitigation of power quality problems, respectively. The OASC is an adaptive control alongside exhibiting robustness against uncertainties (structured and unstructured). The objective of peak wind power extraction is met through cascaded control, which includes an inner hysteresis current control and an outer speed control based on OASC. The proposed OASC includes a disturbance Observer Loop with backstepping control. Moreover, it incorporates a discontinuous projection law-based adaptive parameter estimation, thereby resulting in a sense of hybrid control implementation. The outer speed control Loop provides the reference stator current to the inner Loop retaining maximum power point tracking. For enhancement of system reliability, another renewable source (solar PV array) is integrated at the dc link. The connection between the hybrid system and the grid is established through an inverter incorporating the proposed MAF-based control. Herein, the effects of nonlinear balanced and unbalanced loads are addressed through the incorporation of vectorial approach for extracting fundamental positive sequence components from nonlinear load currents to realize harmonic-free fundamental reference currents for the grid. The proposed controls are simulated and compared with the conventional techniques. The control implementation and performance testing are carried out on the hybrid system built in the laboratory.
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A Composite Sliding Mode Controller for Wind Power Extraction in Remotely Located Solar PV–Wind Hybrid System
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Subarni Pradhan, Bhim Singh, Bijaya Ketan Panigrahi, Shadab MurshidAbstract:Ensuring electrification of remote locations continues to be a major challenge for power engineers. To deal with the effect of intermittent nature of wind, this paper presents the design and implementation of a composite sliding mode controller (CSMC) for a battery energy storage (BES) supported solar photovoltaic (PV)-wind hybrid system in a remote location. This control technique comprises of a soft-switching sliding-mode Observer (SS-SMO) and a nonsingular terminal sliding mode controller (NTSMC). The SS-SMO is used to observe the disturbances, whereas the NTSMC is used as a speed controller. The chattering problem caused by the conventional sliding mode controller is alleviated by replacing the conventional signum switching function with the smooth hyperbolic tangent function in disturbance Observer Loop. The fast and finite time convergence NTSMC based speed controller along with the SS-SMO based disturbance rejection unit, serves the benefits of CSMC. This technique exhibits robustness against model uncertainties and external disturbances. Moreover, the complexity of the system is reduced by replacing the mechanical speed and position sensors with parameter estimation. A double-stage configuration using a dc/dc boost converter is adopted for a PV system. A comparative analysis is presented between the proposed and conventional techniques. A prototype of the hybrid system is developed in the laboratory with permanent magnet synchronous generator. The CSMC-based controller with disturbance rejection ability is implemented to harvest peak wind power. A perturb and observe maximum power point tracking technique is adopted to harvest peak solar power. A voltage control technique is adopted to maintain the voltage at the point of common coupling.
Philippe Martinet - One of the best experts on this subject based on the ideXlab platform.
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High-speed mobile robot control in off-road conditions: A multi-model based adaptive approach
2011 IEEE International Conference on Robotics and Automation, 2011Co-Authors: Roland Lenain, Benoit Thuilot, Oliver Hach, Philippe MartinetAbstract:This paper is focused on the design of a control strategy for the path tracking of off-road mobile robots acting at high speed. In order to achieve high accuracy in such a context, uncertain and fast dynamics have to be explicitly taken into account. Since these phenomena (grip conditions, delays due to inertial and low-level control properties) are hardly measurable directly, the proposed approach relies on predictive and Observer-based adaptive control techniques. In particular, the adaptive part is based on an Observer Loop, taking advantage of both kinematic and dynamic vehicle models. This multi-model based adaptive approach permits to adapt on-line the grip conditions (represented by cornering stiffnesses), enabling highly reactive sideslip angles observation and then accurate path tracking. The relevance of this approach is investigated through full scale experiments.
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ICRA - High-speed mobile robot control in off-road conditions: A multi-model based adaptive approach
2011 IEEE International Conference on Robotics and Automation, 2011Co-Authors: Roland Lenain, Benoit Thuilot, Oliver Hach, Philippe MartinetAbstract:This paper is focused on the design of a control strategy for the path tracking of off-road mobile robots acting at high speed. In order to achieve high accuracy in such a context, uncertain and fast dynamics have to be explicitly taken into account. Since these phenomena (grip conditions, delays due to inertial and low-level control properties) are hardly measurable directly, the proposed approach relies on predictive and Observer-based adaptive control techniques. In particular, the adaptive part is based on an Observer Loop, taking advantage of both kinematic and dynamic vehicle models. This multi-model based adaptive approach permits to adapt on-line the grip conditions (represented by cornering stiffnesses), enabling highly reactive sideslip angles observation and then accurate path tracking. The relevance of this approach is investigated through full scale experiments.
Subarni Pradhan - One of the best experts on this subject based on the ideXlab platform.
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Performance Investigation of Multifunctional On-Grid Hybrid Wind–PV System With OASC and MAF-Based Control
IEEE Transactions on Power Electronics, 2019Co-Authors: Subarni Pradhan, Shadab Murshid, Bhim Singh, Bijaya Ketan PanigrahiAbstract:An Observer-based adaptive speed control (OASC) and a multistage adaptive filter (MAF) based control structure are proposed for an on-grid hybrid wind-photovoltaic (PV) system to deal with the two major issues such as peak wind power extraction and mitigation of power quality problems, respectively. The OASC is an adaptive control alongside exhibiting robustness against uncertainties (structured and unstructured). The objective of peak wind power extraction is met through cascaded control, which includes an inner hysteresis current control and an outer speed control based on OASC. The proposed OASC includes a disturbance Observer Loop with backstepping control. Moreover, it incorporates a discontinuous projection law-based adaptive parameter estimation, thereby resulting in a sense of hybrid control implementation. The outer speed control Loop provides the reference stator current to the inner Loop retaining maximum power point tracking. For enhancement of system reliability, another renewable source (solar PV array) is integrated at the dc link. The connection between the hybrid system and the grid is established through an inverter incorporating the proposed MAF-based control. Herein, the effects of nonlinear balanced and unbalanced loads are addressed through the incorporation of vectorial approach for extracting fundamental positive sequence components from nonlinear load currents to realize harmonic-free fundamental reference currents for the grid. The proposed controls are simulated and compared with the conventional techniques. The control implementation and performance testing are carried out on the hybrid system built in the laboratory.
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A Composite Sliding Mode Controller for Wind Power Extraction in Remotely Located Solar PV–Wind Hybrid System
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Subarni Pradhan, Bhim Singh, Bijaya Ketan Panigrahi, Shadab MurshidAbstract:Ensuring electrification of remote locations continues to be a major challenge for power engineers. To deal with the effect of intermittent nature of wind, this paper presents the design and implementation of a composite sliding mode controller (CSMC) for a battery energy storage (BES) supported solar photovoltaic (PV)-wind hybrid system in a remote location. This control technique comprises of a soft-switching sliding-mode Observer (SS-SMO) and a nonsingular terminal sliding mode controller (NTSMC). The SS-SMO is used to observe the disturbances, whereas the NTSMC is used as a speed controller. The chattering problem caused by the conventional sliding mode controller is alleviated by replacing the conventional signum switching function with the smooth hyperbolic tangent function in disturbance Observer Loop. The fast and finite time convergence NTSMC based speed controller along with the SS-SMO based disturbance rejection unit, serves the benefits of CSMC. This technique exhibits robustness against model uncertainties and external disturbances. Moreover, the complexity of the system is reduced by replacing the mechanical speed and position sensors with parameter estimation. A double-stage configuration using a dc/dc boost converter is adopted for a PV system. A comparative analysis is presented between the proposed and conventional techniques. A prototype of the hybrid system is developed in the laboratory with permanent magnet synchronous generator. The CSMC-based controller with disturbance rejection ability is implemented to harvest peak wind power. A perturb and observe maximum power point tracking technique is adopted to harvest peak solar power. A voltage control technique is adopted to maintain the voltage at the point of common coupling.
Bijaya Ketan Panigrahi - One of the best experts on this subject based on the ideXlab platform.
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Performance Investigation of Multifunctional On-Grid Hybrid Wind–PV System With OASC and MAF-Based Control
IEEE Transactions on Power Electronics, 2019Co-Authors: Subarni Pradhan, Shadab Murshid, Bhim Singh, Bijaya Ketan PanigrahiAbstract:An Observer-based adaptive speed control (OASC) and a multistage adaptive filter (MAF) based control structure are proposed for an on-grid hybrid wind-photovoltaic (PV) system to deal with the two major issues such as peak wind power extraction and mitigation of power quality problems, respectively. The OASC is an adaptive control alongside exhibiting robustness against uncertainties (structured and unstructured). The objective of peak wind power extraction is met through cascaded control, which includes an inner hysteresis current control and an outer speed control based on OASC. The proposed OASC includes a disturbance Observer Loop with backstepping control. Moreover, it incorporates a discontinuous projection law-based adaptive parameter estimation, thereby resulting in a sense of hybrid control implementation. The outer speed control Loop provides the reference stator current to the inner Loop retaining maximum power point tracking. For enhancement of system reliability, another renewable source (solar PV array) is integrated at the dc link. The connection between the hybrid system and the grid is established through an inverter incorporating the proposed MAF-based control. Herein, the effects of nonlinear balanced and unbalanced loads are addressed through the incorporation of vectorial approach for extracting fundamental positive sequence components from nonlinear load currents to realize harmonic-free fundamental reference currents for the grid. The proposed controls are simulated and compared with the conventional techniques. The control implementation and performance testing are carried out on the hybrid system built in the laboratory.
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A Composite Sliding Mode Controller for Wind Power Extraction in Remotely Located Solar PV–Wind Hybrid System
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Subarni Pradhan, Bhim Singh, Bijaya Ketan Panigrahi, Shadab MurshidAbstract:Ensuring electrification of remote locations continues to be a major challenge for power engineers. To deal with the effect of intermittent nature of wind, this paper presents the design and implementation of a composite sliding mode controller (CSMC) for a battery energy storage (BES) supported solar photovoltaic (PV)-wind hybrid system in a remote location. This control technique comprises of a soft-switching sliding-mode Observer (SS-SMO) and a nonsingular terminal sliding mode controller (NTSMC). The SS-SMO is used to observe the disturbances, whereas the NTSMC is used as a speed controller. The chattering problem caused by the conventional sliding mode controller is alleviated by replacing the conventional signum switching function with the smooth hyperbolic tangent function in disturbance Observer Loop. The fast and finite time convergence NTSMC based speed controller along with the SS-SMO based disturbance rejection unit, serves the benefits of CSMC. This technique exhibits robustness against model uncertainties and external disturbances. Moreover, the complexity of the system is reduced by replacing the mechanical speed and position sensors with parameter estimation. A double-stage configuration using a dc/dc boost converter is adopted for a PV system. A comparative analysis is presented between the proposed and conventional techniques. A prototype of the hybrid system is developed in the laboratory with permanent magnet synchronous generator. The CSMC-based controller with disturbance rejection ability is implemented to harvest peak wind power. A perturb and observe maximum power point tracking technique is adopted to harvest peak solar power. A voltage control technique is adopted to maintain the voltage at the point of common coupling.
Bhim Singh - One of the best experts on this subject based on the ideXlab platform.
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Performance Investigation of Multifunctional On-Grid Hybrid Wind–PV System With OASC and MAF-Based Control
IEEE Transactions on Power Electronics, 2019Co-Authors: Subarni Pradhan, Shadab Murshid, Bhim Singh, Bijaya Ketan PanigrahiAbstract:An Observer-based adaptive speed control (OASC) and a multistage adaptive filter (MAF) based control structure are proposed for an on-grid hybrid wind-photovoltaic (PV) system to deal with the two major issues such as peak wind power extraction and mitigation of power quality problems, respectively. The OASC is an adaptive control alongside exhibiting robustness against uncertainties (structured and unstructured). The objective of peak wind power extraction is met through cascaded control, which includes an inner hysteresis current control and an outer speed control based on OASC. The proposed OASC includes a disturbance Observer Loop with backstepping control. Moreover, it incorporates a discontinuous projection law-based adaptive parameter estimation, thereby resulting in a sense of hybrid control implementation. The outer speed control Loop provides the reference stator current to the inner Loop retaining maximum power point tracking. For enhancement of system reliability, another renewable source (solar PV array) is integrated at the dc link. The connection between the hybrid system and the grid is established through an inverter incorporating the proposed MAF-based control. Herein, the effects of nonlinear balanced and unbalanced loads are addressed through the incorporation of vectorial approach for extracting fundamental positive sequence components from nonlinear load currents to realize harmonic-free fundamental reference currents for the grid. The proposed controls are simulated and compared with the conventional techniques. The control implementation and performance testing are carried out on the hybrid system built in the laboratory.
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A Composite Sliding Mode Controller for Wind Power Extraction in Remotely Located Solar PV–Wind Hybrid System
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Subarni Pradhan, Bhim Singh, Bijaya Ketan Panigrahi, Shadab MurshidAbstract:Ensuring electrification of remote locations continues to be a major challenge for power engineers. To deal with the effect of intermittent nature of wind, this paper presents the design and implementation of a composite sliding mode controller (CSMC) for a battery energy storage (BES) supported solar photovoltaic (PV)-wind hybrid system in a remote location. This control technique comprises of a soft-switching sliding-mode Observer (SS-SMO) and a nonsingular terminal sliding mode controller (NTSMC). The SS-SMO is used to observe the disturbances, whereas the NTSMC is used as a speed controller. The chattering problem caused by the conventional sliding mode controller is alleviated by replacing the conventional signum switching function with the smooth hyperbolic tangent function in disturbance Observer Loop. The fast and finite time convergence NTSMC based speed controller along with the SS-SMO based disturbance rejection unit, serves the benefits of CSMC. This technique exhibits robustness against model uncertainties and external disturbances. Moreover, the complexity of the system is reduced by replacing the mechanical speed and position sensors with parameter estimation. A double-stage configuration using a dc/dc boost converter is adopted for a PV system. A comparative analysis is presented between the proposed and conventional techniques. A prototype of the hybrid system is developed in the laboratory with permanent magnet synchronous generator. The CSMC-based controller with disturbance rejection ability is implemented to harvest peak wind power. A perturb and observe maximum power point tracking technique is adopted to harvest peak solar power. A voltage control technique is adopted to maintain the voltage at the point of common coupling.
