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Auxiliary Winding

The Experts below are selected from a list of 1587 Experts worldwide ranked by ideXlab platform

Abdallah Saad – 1st expert on this subject based on the ideXlab platform

  • Three Phase Induction Motor Inverter Defects Diagnosis Using Voltage Spectrum of an Auxiliary Winding
    Applied Mechanics and Materials, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new technique for diagnosing faults in three phase voltage inverter feeding induction motor is presented. It is based on the so-called the voltage spectrum of an Auxiliary Winding. For this purpose, expression of the inserted Winding voltage is presented. After that, discrete Fourier transform analyzer is required for converting the voltage signal from the time domain to the frequency domain. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.

  • Lissajous Curve of an Auxiliary Winding Voltage Park Components for Diagnosing Multiple Open Switches Faults in Three Phase Inverter
    Applied Mechanics and Materials, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new technique for diagnosing multiple open switch fault in three phase voltage inverter feeding induction motor is presented. It is based on the so-called the Lissajous curve of an Auxiliary Winding voltage Park components. For this purpose, expressions of the inserted Winding voltage and its Park components are presented. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.

  • lissajous curve of an Auxiliary Winding voltage park components for diagnosing induction motor inverter defects
    Advanced Materials Research, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new method for voltage inverter feeding induction motor fault diagnosis is presented. It is based on the so-called the Lissajous curve of an Auxiliary Winding voltage Park components. For this purpose, time domain mathematical model of a three phase induction motor fed by an inverter and expressions of the inserted Winding voltage and its Park components are presented. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.

Dan Valentin Nicolae – 2nd expert on this subject based on the ideXlab platform

  • IECON – Influence of Air-Gap Length on the Performance of a Three-Phase Induction Motor with a Capacitive Auxiliary Stator Winding
    IECON 2018 – 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
    Co-Authors: Mbika Muteba, Dan Valentin Nicolae

    Abstract:

    In order to avoid lower efficiency, poor power factor and lower torque density, the airgap length of a three-phase squirrel cage induction motor (SCIM)should not be designed very large. On other hand, the distortion of airgap flux density distribution can be minimized by enlarging the airgap length. This has informed machine designers to choose very carefully the airgap length while designing a three-phase SCIM. This paper deals with the influence that the airgap length has on the performance of a three-phase SCIM having a capacitive Auxiliary three-phase stator Winding. The three-phase Auxiliary Winding is only magnetically coupled to the stator main Winding. A conventional 5.5 kW, 50-Hz, and 4-pole three-phase SCIM is modified to accommodate both main and Auxiliary Windings in the same stator slots, while maintaining the rated power to 5.5 kW. The results obtained from practical measurements evidenced that for a large airgap it is possible to obtain high efficiency and good power factor with the presence of a capacitive Auxiliary stator Winding. The high efficiency is mainly due the decrease in iron and stator copper losses. The iron losses decrease with increase in airgap length for the SCIM with or without a capacitive Auxiliary Winding, while the stator copper loss is obtained by reactively exciting the three-phase Auxiliary stator Winding.

  • Torque per Ampere Enhancement of a Three-Phase Induction Motor by Means of a Capacitive Auxiliary Winding
    2018 IEEE Transportation Electrification Conference and Expo (ITEC), 2018
    Co-Authors: Mbika Muteba, Dan Valentin Nicolae

    Abstract:

    This paper presents the use of a capacitive three-phase Auxiliary Winding to enhance the torque per ampere of a three-phase Squirrel Cage Induction Motor (SCIM) for electric traction, which generally requires high torque density, a high power factor and high efficiency. The three-phase Auxiliary Winding is only magnetically coupled to the stator’s main Winding. A conventional 5.5-kW, 50-Hz, and 4-pole three-phase SCIM is modified to accommodate the main and Auxiliary Windings in the stator slots. The electromagnetic conditions of the machine are studied by means of Finite Element Analysis (FEA). The results obtained from FEA are validated by means of practical results. The results from both FEA and experimental measurements evidence that the torque per ampere is tremendously enhanced when a capacitive excitation is applied to the Auxiliary Winding of the SCIM.

  • Influence of Air-Gap Length on the Performance of a Three-Phase Induction Motor with a Capacitive Auxiliary Stator Winding
    IECON 2018 – 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
    Co-Authors: Mbika Muteba, Dan Valentin Nicolae

    Abstract:

    In order to avoid lower efficiency, poor power factor and lower torque density, the airgap length of a three-phase squirrel cage induction motor (SCIM)should not be designed very large. On other hand, the distortion of airgap flux density distribution can be minimized by enlarging the airgap length. This has informed machine designers to choose very carefully the airgap length while designing a three-phase SCIM. This paper deals with the influence that the airgap length has on the performance of a three-phase SCIM having a capacitive Auxiliary three-phase stator Winding. The three-phase Auxiliary Winding is only magnetically coupled to the stator main Winding. A conventional 5.5 kW, 50-Hz, and 4-pole three-phase SCIM is modified to accommodate both main and Auxiliary Windings in the same stator slots, while maintaining the rated power to 5.5 kW. The results obtained from practical measurements evidenced that for a large airgap it is possible to obtain high efficiency and good power factor with the presence of a capacitive Auxiliary stator Winding. The high efficiency is mainly due the decrease in iron and stator copper losses. The iron losses decrease with increase in airgap length for the SCIM with or without a capacitive Auxiliary Winding, while the stator copper loss is obtained by reactively exciting the three-phase Auxiliary stator Winding.

Lamiaâ El Menzhi – 3rd expert on this subject based on the ideXlab platform

  • Three Phase Induction Motor Inverter Defects Diagnosis Using Voltage Spectrum of an Auxiliary Winding
    Applied Mechanics and Materials, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new technique for diagnosing faults in three phase voltage inverter feeding induction motor is presented. It is based on the so-called the voltage spectrum of an Auxiliary Winding. For this purpose, expression of the inserted Winding voltage is presented. After that, discrete Fourier transform analyzer is required for converting the voltage signal from the time domain to the frequency domain. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.

  • Lissajous Curve of an Auxiliary Winding Voltage Park Components for Diagnosing Multiple Open Switches Faults in Three Phase Inverter
    Applied Mechanics and Materials, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new technique for diagnosing multiple open switch fault in three phase voltage inverter feeding induction motor is presented. It is based on the so-called the Lissajous curve of an Auxiliary Winding voltage Park components. For this purpose, expressions of the inserted Winding voltage and its Park components are presented. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.

  • lissajous curve of an Auxiliary Winding voltage park components for diagnosing induction motor inverter defects
    Advanced Materials Research, 2014
    Co-Authors: Lamiaâ El Menzhi, Abdallah Saad

    Abstract:

    In this paper, a new method for voltage inverter feeding induction motor fault diagnosis is presented. It is based on the so-called the Lissajous curve of an Auxiliary Winding voltage Park components. For this purpose, time domain mathematical model of a three phase induction motor fed by an inverter and expressions of the inserted Winding voltage and its Park components are presented. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.