The Experts below are selected from a list of 8613 Experts worldwide ranked by ideXlab platform
J. P. Mishra - One of the best experts on this subject based on the ideXlab platform.
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Modified Speed Sensor-less Grid Connected DFIG based WECS
Indian journal of science and technology, 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents a new Phase Locked Loop (PLL) based slip Speed estimator for Speed Sensor less field oriented vector control operation of variable Speed grid connected Wind Energy Conversion System (WECS). Three phase rotor current is used to design a PLL based slip estimator for Speed Sensor-less vector control operation of rotor side converter. The proposed Speed Sensor-less grid connected Double Fed Induction Generator (DFIG) based WECS is used for decoupled control of stator active and reactive power to ensure maximizing the power generation at unity power factor under varying wind Speed. The Speed Sensor-less Vector control scheme is also incorporated with an optimal Speed tracking controller for maximum energy capture in the rated wind Speed range and restrict the mechanical output power to the rated value using pitch angle control when the wind velocity crosses rated limit to prevent overloading and outage of the wind turbine. The proposed method does not require the information of rotor Speed or position for Speed Sensor less DFIG based WECS unlike other published methods. Simulation has been carried out in MATLAB/Simulink environment and results have been analyzed. Results show that the proposed Speed Sensor-less DFIG system can operate at its optimum energy level for a wide range of wind Speed and is capable for satisfactory operation of the variable Speed WECS.
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Active and reactive power control of a grid connected Speed Sensor less DFIG based wind energy conversion system
2015 International Conference on Energy Power and Environment: Towards Sustainable Growth (ICEPE), 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents the performance study of a Speed Sensor-less control of grid connected DFIG based variable Speed Wind Energy Conversion System (WECS). A new phase locked loop (PLL) based slip Speed estimator using rotor current is proposed for Speed Sensor-less stator field oriented vector control operation of rotor side converter (RSC) to ensure decoupled control of stator active and reactive power while maximizing the power generation at unity power factor under varying wind Speed. The estimated slip Speed is used for back emf compensation of rotor current controllers. Simulation has been carried out in MATLAB/Simulink environment and results show satisfactory operation of the proposed Speed Sensor-less DFIG based variable Speed WECS.
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Modified Speed Sensor-less grid connected DFIG based wind energy conversion system for decoupled control of active and reactive power
2015 International Conference on Power and Advanced Control Engineering (ICPACE), 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents the performance study of a Speed Sensor-less control of grid connected DFIG based variable Speed Wind Energy Conversion System (WECS). A new phase locked loop (PLL) based slip Speed estimator using rotor current is proposed for Speed Sensor-less stator field oriented vector control operation of rotor side converter (RSC) to ensure decoupled control of stator active and reactive power while maximizing the power generation at unity power factor under varying wind Speed. The estimated slip Speed is used for back emf compensation of rotor current controllers. Simulation has been carried out in MATLAB/ Simulink environment and results show satisfactory operation of the proposed Speed Sensor-less DFIG based variable Speed WECS.
Subir Datta - One of the best experts on this subject based on the ideXlab platform.
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Modified Speed Sensor-less Grid Connected DFIG based WECS
Indian journal of science and technology, 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents a new Phase Locked Loop (PLL) based slip Speed estimator for Speed Sensor less field oriented vector control operation of variable Speed grid connected Wind Energy Conversion System (WECS). Three phase rotor current is used to design a PLL based slip estimator for Speed Sensor-less vector control operation of rotor side converter. The proposed Speed Sensor-less grid connected Double Fed Induction Generator (DFIG) based WECS is used for decoupled control of stator active and reactive power to ensure maximizing the power generation at unity power factor under varying wind Speed. The Speed Sensor-less Vector control scheme is also incorporated with an optimal Speed tracking controller for maximum energy capture in the rated wind Speed range and restrict the mechanical output power to the rated value using pitch angle control when the wind velocity crosses rated limit to prevent overloading and outage of the wind turbine. The proposed method does not require the information of rotor Speed or position for Speed Sensor less DFIG based WECS unlike other published methods. Simulation has been carried out in MATLAB/Simulink environment and results have been analyzed. Results show that the proposed Speed Sensor-less DFIG system can operate at its optimum energy level for a wide range of wind Speed and is capable for satisfactory operation of the variable Speed WECS.
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Active and reactive power control of a grid connected Speed Sensor less DFIG based wind energy conversion system
2015 International Conference on Energy Power and Environment: Towards Sustainable Growth (ICEPE), 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents the performance study of a Speed Sensor-less control of grid connected DFIG based variable Speed Wind Energy Conversion System (WECS). A new phase locked loop (PLL) based slip Speed estimator using rotor current is proposed for Speed Sensor-less stator field oriented vector control operation of rotor side converter (RSC) to ensure decoupled control of stator active and reactive power while maximizing the power generation at unity power factor under varying wind Speed. The estimated slip Speed is used for back emf compensation of rotor current controllers. Simulation has been carried out in MATLAB/Simulink environment and results show satisfactory operation of the proposed Speed Sensor-less DFIG based variable Speed WECS.
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Modified Speed Sensor-less grid connected DFIG based wind energy conversion system for decoupled control of active and reactive power
2015 International Conference on Power and Advanced Control Engineering (ICPACE), 2015Co-Authors: Subir Datta, J. P. MishraAbstract:This paper presents the performance study of a Speed Sensor-less control of grid connected DFIG based variable Speed Wind Energy Conversion System (WECS). A new phase locked loop (PLL) based slip Speed estimator using rotor current is proposed for Speed Sensor-less stator field oriented vector control operation of rotor side converter (RSC) to ensure decoupled control of stator active and reactive power while maximizing the power generation at unity power factor under varying wind Speed. The estimated slip Speed is used for back emf compensation of rotor current controllers. Simulation has been carried out in MATLAB/ Simulink environment and results show satisfactory operation of the proposed Speed Sensor-less DFIG based variable Speed WECS.
Georg Brasseur - One of the best experts on this subject based on the ideXlab platform.
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A robust capacitive angular Speed Sensor
IEEE Transactions on Instrumentation and Measurement, 1998Co-Authors: Tibor Fabian, Georg BrasseurAbstract:This paper presents a contactless capacitive angular Speed Sensor\nfor automotive applications. The Sensor is based on a passive rotating\nelectrode plated between two mechanically static and electrically active\nelectrodes. Differing characteristics of the charge transfer at various\nSensor positions is utilized as an input for the determination of the\nrotational Speed. The mathematical model of the Sensor further enables\nthe optimization of the Sensor characteristics for specific\napplications. Experimental results from a prototype designed for the\nSpeed measurement of a steering wheel show a relative Speed error of\n±4% at a resolution better than 1°/s
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A robust capacitive angular Speed Sensor
IEEE Instrumentation and Measurement Technology Conference Sensing Processing Networking. IMTC Proceedings, 1997Co-Authors: Tibor Fabian, Georg BrasseurAbstract:This paper presents a contactless capacitive angular Speed Sensor for automotive applications. The Sensor is based on a passive rotating electrode placed between two mechanically static and electrically active electrodes. The different characteristics of the charge transfer at various Sensor positions is utilized as an input for the calculation of the rotational Speed. The main advantages of this low cost system are its capability to operate at high temperatures and humidity as well as its insensitivity to vibrations, dirt, dew and moisture deposited on the three Sensor electrodes. The mathematical model of the Sensor further enables the optimization of the Sensor characteristics for specific applications. Experimental results from a prototype designed for the Speed-measurement of a steering-wheel show a relative Speed error of /spl plusmn/4% at a resolution better than 1/spl deg//s.
Dhasarathy Parthasarathy - One of the best experts on this subject based on the ideXlab platform.
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Energy harvesting Wheel Speed Sensor
2020Co-Authors: Dhasarathy ParthasarathyAbstract:This thesis presents a prototype energy harvesting autonomous Sensor, called the Autonomous Wheel Speed Sensor (AWSS), that is targeted for operation in the Electronic Braking System (EBS) of vehicles. In order to monitor the rotational state of a wheel, the EBS currently uses a passive Wheel Speed Sensor (WSS) which is a variable reluctance electromagnetic transducer. In the existing EBS setup, one WSS is used per wheel, each of which is connected to the EBS system using extensive cabling. This project presents the first successful attempt at converting the WSS into an energy harvesting wireless wheel Speed Sensor or in other words an Autonomous Wheel Speed Sensor (AWSS), which provides information about the rotational state of the wheel to the EBS system over a wireless link. Unlike most wireless Sensors which use batteries, the AWSS employs energy harvesting to power itself by simultaneously using the WSS electromagnetic transducer as an energy harvester as well as a Sensor. By thus making an autonomous WSS, the amount of cables in the existing WSS assembly can be reduced, leading to savings in material, assembly and maintenance costs. The self-powered prototype AWSS successfully implements periodic wireless transmission of the wheel Speed along with near real-time wheel lock detection, at a duty cycle of less than The AWSS has been built using readily available COTS components and uses a proprietary low-power standard for wireless communication. The prototype AWSS implemented in this project successfully demonstrates that the WSS is capable of being used as an energy harvesting transducer. In the experimental setup used in this project, the WSS yields harvestable power of for Speed ranges of. This opens up the possibility of using the variable reluctance Sensor setup to harvest energy from any rotational assembly and use this harvested energy to power autonomous Sensors. This prototype system is intended for operation in AB Volvo vehicle applications and the project is a partnership between Chalmers University of Technology and Volvo Group Trucks Technology – Advanced Technology and Research, Goteborg, Sweden. Keywords: energy harvesting Sensor, wheel Speed Sensor, variable reluctance Sensor
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Prototype energy harvesting wheel Speed Sensor for anti-lock braking
2012 IEEE International Symposium on Robotic and Sensors Environments Proceedings, 2012Co-Authors: Dhasarathy Parthasarathy, Peter Enoksson, Roy JohanssonAbstract:An energy harvesting wireless wheel Speed Sensor is presented, which implements two basic functions for anti-lock braking, namely periodic transmission of wheel Speed information and near real-time detection of the start/stop of wheel rotation. The prototype Sensor is powered by reusing a commercially available variable reluctance electromagnetic Speed Sensor as an energy harvesting transducer. In an experimental setup, a maximum harvestable power of ~1 mW from the transducer (at a wheel rotational Speed of ~ 300 RPM) has been measured which has been used for powering the autonomous Sensor. Each recurrent operation in the (prototype) autonomous Sensor consumes a maximum of ~23 mW of power in bursts for ~3 ms, and a simple statistical model of wheel behavior has been proposed based on which the average power consumption of the Sensor has been calculated.
Armin Satz - One of the best experts on this subject based on the ideXlab platform.
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EMS - Signal Analysis in Back Bias Speed Sensor Systems
2013 European Modelling Symposium, 2013Co-Authors: Michael Ortner, Michael Seger, Marcelo Ribeiro, Armin SatzAbstract:Wheel Speed Sensors determine the angular velocity of rotating axes and are widely used in modern industry with a variety of applications. This paper provides a general introduction to back bias Speed Sensor systems, presenting and discussing the numerous parameters of a general 3D model. The underlying physical mechanisms of the back bias principle are explained with the help of 2D FEM magneto-static simulations. While 2D simulations do not perfectly reflect the magnetic field dynamics of the real problem, they provide an excellent qualitative understanding of the signal behavior concerning model parameter variations. Based on the previous discussions, a representative cogwheel geometry is proposed and analyzed in detail, featuring a study of the influences of the model parameters on the Speed Sensor signal. As an outcome of the parameter sensitivity analysis, it was possible to determine the degree of influence of the different model parameters on the quality of the Speed Sensor signal. In conclusion, this study aims to advance the general understanding of the Speed Sensor signal in back bias systems for manufacturers and to form a solid basis for future work in this field.
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Signal Analysis in Back Bias Speed Sensor Systems
2013 European Modelling Symposium, 2013Co-Authors: Michael Ortner, Michael Seger, Marcelo Ribeiro, Armin SatzAbstract:Wheel Speed Sensors determine the angular velocity of rotating axes and are widely used in modern industry with a variety of applications. This paper provides a general introduction to back bias Speed Sensor systems, presenting and discussing the numerous parameters of a general 3D model. The underlying physical mechanisms of the back bias principle are explained with the help of 2D FEM magneto-static simulations. While 2D simulations do not perfectly reflect the magnetic field dynamics of the real problem, they provide an excellent qualitative understanding of the signal behavior concerning model parameter variations. Based on the previous discussions, a representative cogwheel geometry is proposed and analyzed in detail, featuring a study of the influences of the model parameters on the Speed Sensor signal. As an outcome of the parameter sensitivity analysis, it was possible to determine the degree of influence of the different model parameters on the quality of the Speed Sensor signal. In conclusion, this study aims to advance the general understanding of the Speed Sensor signal in back bias systems for manufacturers and to form a solid basis for future work in this field.