The Experts below are selected from a list of 18300 Experts worldwide ranked by ideXlab platform
Fotini G Ioannidou - One of the best experts on this subject based on the ideXlab platform.
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implementation of Scalar Control scheme for variable frequency induction motor actuator system
Sensors and Actuators A-physical, 2003Co-Authors: Maria G Ioannides, Stelios A Papazis, Fotini G IoannidouAbstract:The implementation of the Control system for a variable speed electric actuator composed of an induction motor with Scalar Control technique is presented. Details are given on the laboratory experiment involving the actuator Control system and its modes of operation. Also, the configured hardware, the operation Control software and the results obtained on performance from laboratory tests are described. Thus, a high performance actuator employing a V/f Controlled induction motor with a digital inverter has been developed and tested.
Stelios A Papazis - One of the best experts on this subject based on the ideXlab platform.
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implementation of Scalar Control scheme for variable frequency induction motor actuator system
Sensors and Actuators A-physical, 2003Co-Authors: Maria G Ioannides, Stelios A Papazis, Fotini G IoannidouAbstract:The implementation of the Control system for a variable speed electric actuator composed of an induction motor with Scalar Control technique is presented. Details are given on the laboratory experiment involving the actuator Control system and its modes of operation. Also, the configured hardware, the operation Control software and the results obtained on performance from laboratory tests are described. Thus, a high performance actuator employing a V/f Controlled induction motor with a digital inverter has been developed and tested.
Maria G Ioannides - One of the best experts on this subject based on the ideXlab platform.
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implementation of Scalar Control scheme for variable frequency induction motor actuator system
Sensors and Actuators A-physical, 2003Co-Authors: Maria G Ioannides, Stelios A Papazis, Fotini G IoannidouAbstract:The implementation of the Control system for a variable speed electric actuator composed of an induction motor with Scalar Control technique is presented. Details are given on the laboratory experiment involving the actuator Control system and its modes of operation. Also, the configured hardware, the operation Control software and the results obtained on performance from laboratory tests are described. Thus, a high performance actuator employing a V/f Controlled induction motor with a digital inverter has been developed and tested.
Ali M Bazzi - One of the best experts on this subject based on the ideXlab platform.
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robust sensorless Scalar Control of induction motor drives with torque capability enhancement at low speeds
International Electric Machines and Drives Conference, 2019Co-Authors: Zhe Zhang, Ali M BazziAbstract:In this paper, a new sensorless Scalar Control capable of enhancing torque capability for induction motor drives at low speeds is proposed. The proposed Control addressed the problem that the conventional volt-per-hertz (V/f)Control suffers from: torque capability is significantly impaired at low speeds due to stator flux weakening. A simple, encoder-free, but robust voltage compensation scheme for stator flux strengthening is therefore developed based on the dynamic model of an induction machine. Both simulation and experimental results are provided to demonstrate the superiority of proposed sensorless Scalar Control in torque capability enhancement and speed regulation over open-loop V/f, as well as stator resistive voltage compensated V/f Control, especially at low speeds.
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An improved high-performance open-loop V/f Control method for induction machines
2017 IEEE Applied Power Electronics Conference and Exposition (APEC), 2017Co-Authors: Zhe Zhang, Ali M BazziAbstract:Scalar Control has been the most popular Control method implemented in induction machine drive systems. This paper presents an enhanced open-loop Volts-per-Hertz (V/f) Controller aimed at strengthening the magnetizing flux of an induction machine when operated below its rated frequency. Instead of using the traditional constant V/f based on the idealized approximate steady-state machine model and/or simple stator voltage drop compensation, this method derives a new V/f ratio from a more accurate steady-state model which takes core loss into consideration as well as the stator voltage drop. In addition, a frequency boost strategy is introduced with the proposed V/f ratio for slip compensation. The analytically derived V/f ratio under different frequencies at rated load is then compared to experimentally obtained data to verify its effectiveness.
Umanand Loganathan - One of the best experts on this subject based on the ideXlab platform.
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robust and high dynamic performance Control of induction motor drive using transient vector estimator
IEEE Transactions on Industrial Electronics, 2019Co-Authors: Siddavatam Ravi Prakash Reddy, Umanand LoganathanAbstract:The two most commonly used induction motor Control methods are the Scalar ( $V/f$ ) and vector (field-oriented) Control techniques. $V/f$ Control has good steady-state response and robustness against the variation in machine parameters, but the resulting torque dynamics are poorer. Vector Control achieves better dynamic performance by decoupling the flux- and torque-producing components of the stator current. Vector-Controlled techniques are heavily dependent on the machine parameters and are sensitive to the variation in machine parameters. This paper proposes a novel Control technique, which integrates the robustness features of Scalar Control and good dynamic performance of vector Control. Estimation of the transient vector is responsible for improving dynamics in the proposed Control. The proposed Control technique uses an optimal Controller with an output feedback law. The operation of the proposed Control is validated experimentally under both steady-state and transient conditions. Finally, the proposed Control is compared with both the $V/f$ and vector Control strategies in terms of dynamic performance and parameter sensitivity.
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improving the dynamic response of Scalar Control of induction machine drive using phase angle Control
Conference of the Industrial Electronics Society, 2018Co-Authors: Siddavatam Ravi Prakash Reddy, Umanand LoganathanAbstract:Speed Control of induction machine (IM)can be achieved by two popular methods namely Scalar Control and vector Control. Scalar Control has good steady state response and is robust against the variation in machine parameters. However, the poor transient response of this method results in its limited applications. On the other hand, vector Control of IM has good transient response. But this Control is sensitive to the variation in machine parameters. Additionally, precise location of the flux position plays an important role on the transient and steady state performances of vector Control. This paper proposes a novel speed Control method to improve the dynamic performance of Scalar Control using phase angle Control. The proposed Control method has a very good dynamic performance while maintaining the robustness features of Scalar Control. Dynamic performance and robustness features of the proposed method are validated through simulation results.
