The Experts below are selected from a list of 1785 Experts worldwide ranked by ideXlab platform

Dongseok Hyun - One of the best experts on this subject based on the ideXlab platform.

  • Speed sensorless stator flux-oriented control of induction motor in the Field Weakening Region using Luenberger observer
    IEEE Transactions on Power Electronics, 2005
    Co-Authors: Tae-sung Kwon, Myoungho Shin, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction motor drive, when the estimated speed is transformed into the sampled-data model using the first-forward difference approximation, the sampled-data model has a modeling error which, in turn, produces an error in the rotor speed estimation. The error included in the estimated speed is removed by the use of a low pass filter (LPF). As the result, the delay of the estimated speed occurs in transients by the use of the LPF. This paper investigates the problem of a conventional speed sensorless SFO system due to the delay of the estimated speed in the Field Weakening Region. In addition, this paper proposes a method to estimate exactly speed by using Luenberger observer. The proposed method is verified by the simulation and experiment with a 5-hp induction motor drive.

  • comparison of speed estimation methods for induction motor drives in the Field Weakening Region
    International Conference on Performance Engineering, 2004
    Co-Authors: Sukkyum Kim, Myoungho Shin, Dongseok Hyun
    Abstract:

    It is important to estimate the exact rotor speed for Field Weakening operation in the speed sensorless stator flux oriented (SFO) induction motor drive. Several methods have been reported to estimate exactly the speed in the speed sensorless system. In this paper, we apply two observer-based methods, the Luenberger observer (LO) and the Kalman filter (KF), to SFO induction motor drive in order to achieve a speed sensorless operation in Field Weakening Region. Two control methods are reviewed and discussed. The operation characteristics of these methods in the Field Weakening Region is compared by simulation and experiment.

  • Speed sensorless stator flux-oriented control of induction machine in the Field Weakening Region
    IEEE Transactions on Power Electronics, 2003
    Co-Authors: Myoungho Shin, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction machine drive system, when the estimated speed is transformed into the sampled-data model using the first-forward difference approximation, a modeling error occurs in the sampled data model. As the result, an error in the rotor speed estimation is produced. The error included in sampled data model of the estimated speed is removed by the use of a digital low pass filter (LPF). However, the delay of the estimated speed occurs in transients due to the use of the LPF. Consequently, current control loss occurs at the transition to Field Weakening Region by the delay of the estimated speed. This paper investigates the problem of a conventional speed sensorless SFO system produced by the delay of the estimated speed in the Field Weakening Region. In addition, this paper proposes a new method to estimate exactly rotor speed by using a Kalman filter. The proposed method is verified by simulation and experiment.

  • an improved speed estimation scheme for induction motor drive in the Field Weakening Region
    International Conference on Performance Engineering, 2001
    Co-Authors: Myoungho Shin, Daeil Kim, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction machine drive system, the estimated speed is delayed in transients by the use of a low pass filter This paper investigates the problem of a conventional speed sensorless SFO system due to the delay of the estimated speed in the Field Weakening Region In addition, this paper proposes a method to estimate exactly speed by using Kaltnan filter The proposed method is verified by simulation and experiment with a 5-hp induction motor drive.

  • high performance drives of induction motor with on line tuning of stator transient inductance in Field Weakening Region
    International Conference on Performance Engineering, 1998
    Co-Authors: Hayong Kim, Myoungho Shin, Dongseok Hyun
    Abstract:

    Stator Transient inductance has much influence on rotor flux orientation. In this paper, a new simple on-line tuning scheme of inductances including stator transient inductance for rotor flux orientation control is proposed. Detuned effects caused by inductance variations are shown and simple on-line tuning scheme of them is proposed. Inductances are estimated and tuned by only stator flux and stator current. The proposed scheme is effective in wide speed Region including the Field Weakening Region. The proposed on-line tuning scheme is confirmed by the simulation and experiment results.

Myoungho Shin - One of the best experts on this subject based on the ideXlab platform.

  • analysis on parameter detuning of induction motor drives in Field Weakening Region
    Journal of The Korean Institute of Illuminating and Electrical Installation Engineers, 2010
    Co-Authors: Myoungho Shin
    Abstract:

    The selection of flux level in the maximum torque control of stator flux-oriented induction motor drives in the Field Weakening Region is dependent on stator resistance and inductances. This paper presents parameter detuning effects of stator flux-oriented control drives in the Field Weakening Region. The detuning effects of stator resistance and rotor leakage inductance are analyzed. The decrease of torque and the flux control lost by the detuning of inductance are shown in the simulation results.

  • Speed sensorless stator flux-oriented control of induction motor in the Field Weakening Region using Luenberger observer
    IEEE Transactions on Power Electronics, 2005
    Co-Authors: Tae-sung Kwon, Myoungho Shin, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction motor drive, when the estimated speed is transformed into the sampled-data model using the first-forward difference approximation, the sampled-data model has a modeling error which, in turn, produces an error in the rotor speed estimation. The error included in the estimated speed is removed by the use of a low pass filter (LPF). As the result, the delay of the estimated speed occurs in transients by the use of the LPF. This paper investigates the problem of a conventional speed sensorless SFO system due to the delay of the estimated speed in the Field Weakening Region. In addition, this paper proposes a method to estimate exactly speed by using Luenberger observer. The proposed method is verified by the simulation and experiment with a 5-hp induction motor drive.

  • comparison of speed estimation methods for induction motor drives in the Field Weakening Region
    International Conference on Performance Engineering, 2004
    Co-Authors: Sukkyum Kim, Myoungho Shin, Dongseok Hyun
    Abstract:

    It is important to estimate the exact rotor speed for Field Weakening operation in the speed sensorless stator flux oriented (SFO) induction motor drive. Several methods have been reported to estimate exactly the speed in the speed sensorless system. In this paper, we apply two observer-based methods, the Luenberger observer (LO) and the Kalman filter (KF), to SFO induction motor drive in order to achieve a speed sensorless operation in Field Weakening Region. Two control methods are reviewed and discussed. The operation characteristics of these methods in the Field Weakening Region is compared by simulation and experiment.

  • Speed sensorless stator flux-oriented control of induction machine in the Field Weakening Region
    IEEE Transactions on Power Electronics, 2003
    Co-Authors: Myoungho Shin, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction machine drive system, when the estimated speed is transformed into the sampled-data model using the first-forward difference approximation, a modeling error occurs in the sampled data model. As the result, an error in the rotor speed estimation is produced. The error included in sampled data model of the estimated speed is removed by the use of a digital low pass filter (LPF). However, the delay of the estimated speed occurs in transients due to the use of the LPF. Consequently, current control loss occurs at the transition to Field Weakening Region by the delay of the estimated speed. This paper investigates the problem of a conventional speed sensorless SFO system produced by the delay of the estimated speed in the Field Weakening Region. In addition, this paper proposes a new method to estimate exactly rotor speed by using a Kalman filter. The proposed method is verified by simulation and experiment.

  • an improved speed estimation scheme for induction motor drive in the Field Weakening Region
    International Conference on Performance Engineering, 2001
    Co-Authors: Myoungho Shin, Daeil Kim, Dongseok Hyun
    Abstract:

    In a conventional speed sensorless stator flux-oriented (SFO) induction machine drive system, the estimated speed is delayed in transients by the use of a low pass filter This paper investigates the problem of a conventional speed sensorless SFO system due to the delay of the estimated speed in the Field Weakening Region In addition, this paper proposes a method to estimate exactly speed by using Kaltnan filter The proposed method is verified by simulation and experiment with a 5-hp induction motor drive.

Domenico Casadei - One of the best experts on this subject based on the ideXlab platform.

  • A Comparison of Four Robust Control Schemes for Field-Weakening Operation of Induction Motors
    IEEE Transactions on Power Electronics, 2012
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    Four sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These four control schemes fully utilize the maximum available voltage and current and can produce the maximum possible torque in the entire Field-Weakening Region. For comparison, the four control schemes are implemented on the same experimental platform, i.e., the same DSP board, power inverter, and motor drive. In this way, it is possible to assess not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge, and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drive in the Field Weakening Region
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence on the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.

  • Field-Weakening control schemes for high-speed drives based on induction motors: a comparison
    2008 IEEE Power Electronics Specialists Conference, 2008
    Co-Authors: Domenico Casadei, Michele Mengoni, Angelo Tani, Giovanni Serra, Luca Zarri
    Abstract:

    Three sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These three control schemes fully utilize the maximum available voltage and current for steady-state torque production at any speed, and thus provide the maximum possible torque in the entire Field Weakening Region. For the comparison, the three control schemes are implemented on the same experimental platform, i.e. the same Digital Signal Processor (DSP) board, power inverter and motor drive. In this way, it is possible to judge not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drives in the Field-Weakening Region
    APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition, 2007
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Claudio Rossi, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.

Michele Mengoni - One of the best experts on this subject based on the ideXlab platform.

  • A Comparison of Four Robust Control Schemes for Field-Weakening Operation of Induction Motors
    IEEE Transactions on Power Electronics, 2012
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    Four sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These four control schemes fully utilize the maximum available voltage and current and can produce the maximum possible torque in the entire Field-Weakening Region. For comparison, the four control schemes are implemented on the same experimental platform, i.e., the same DSP board, power inverter, and motor drive. In this way, it is possible to assess not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge, and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drive in the Field Weakening Region
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence on the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.

  • Field-Weakening control schemes for high-speed drives based on induction motors: a comparison
    2008 IEEE Power Electronics Specialists Conference, 2008
    Co-Authors: Domenico Casadei, Michele Mengoni, Angelo Tani, Giovanni Serra, Luca Zarri
    Abstract:

    Three sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These three control schemes fully utilize the maximum available voltage and current for steady-state torque production at any speed, and thus provide the maximum possible torque in the entire Field Weakening Region. For the comparison, the three control schemes are implemented on the same experimental platform, i.e. the same Digital Signal Processor (DSP) board, power inverter and motor drive. In this way, it is possible to judge not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drives in the Field-Weakening Region
    APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition, 2007
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Claudio Rossi, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.

Giovanni Serra - One of the best experts on this subject based on the ideXlab platform.

  • A Comparison of Four Robust Control Schemes for Field-Weakening Operation of Induction Motors
    IEEE Transactions on Power Electronics, 2012
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    Four sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These four control schemes fully utilize the maximum available voltage and current and can produce the maximum possible torque in the entire Field-Weakening Region. For comparison, the four control schemes are implemented on the same experimental platform, i.e., the same DSP board, power inverter, and motor drive. In this way, it is possible to assess not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge, and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drive in the Field Weakening Region
    IEEE Transactions on Power Electronics, 2008
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence on the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.

  • Field-Weakening control schemes for high-speed drives based on induction motors: a comparison
    2008 IEEE Power Electronics Specialists Conference, 2008
    Co-Authors: Domenico Casadei, Michele Mengoni, Angelo Tani, Giovanni Serra, Luca Zarri
    Abstract:

    Three sensorless control schemes for the operation of induction motors in the Field-Weakening Region are compared and assessed in terms of performance and complexity. These three control schemes fully utilize the maximum available voltage and current for steady-state torque production at any speed, and thus provide the maximum possible torque in the entire Field Weakening Region. For the comparison, the three control schemes are implemented on the same experimental platform, i.e. the same Digital Signal Processor (DSP) board, power inverter and motor drive. In this way, it is possible to judge not only the performance of each solution, but also its requirements in terms of computational time, tuning complexity, parameter knowledge and stability of operation.

  • Stator Flux Vector Control of Induction Motor Drives in the Field-Weakening Region
    APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition, 2007
    Co-Authors: Michele Mengoni, Luca Zarri, Angelo Tani, Giovanni Serra, Claudio Rossi, Domenico Casadei
    Abstract:

    A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux as soon as the voltage corresponding to the maximum torque exceeds the available voltage. The control scheme produces a smooth transition into and out of the Field Weakening Region and preserves the torque dynamic. The feasibility of the Field Weakening technique is confirmed by computer simulations and experimental tests.