The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform

Hans Georg Krauthauser - One of the best experts on this subject based on the ideXlab platform.

  • the total electric field compared to the Rectangular Component of the electric field in a complex environment
    MATHEMATICAL MODELING OF WAVE PHENOMENA: 3rd Conference on Mathematical Modeling#N#of Wave Phenomena 20th Nordic Conference on Radio Science and Commu, 2009
    Co-Authors: Magnus Hoijer, Luk R Arnaut, Hans Georg Krauthauser
    Abstract:

    Strong electromagnetic waves can cause upset in and even destruction of electronic equipment. Therefore, the vulnerability of electronic equipment has to be tested. To be able to quantify the test, an unequivocal test parameter has to be defined. In the case that a plane wave is stressed onto the equipment it is easy; the strength of the electric field is an unequivocal test parameter. In an electromagnetically complex environment with electric fields polarized along different directions it is not so obvious what the test parameter should be. A reverberation chamber is an example of such a complex environment. Some people in the community advocate that a Rectangular Component of the field is the best measure of the strength of the field, but others advocate for that the total field (the vector sum of three orthogonal field Components) is the best. The most generic standard, the IEC 61000‐4‐21 prescribes the use of the Rectangular Component, but others prescribe the use of the total electric field. In this...

Magnus Hoijer - One of the best experts on this subject based on the ideXlab platform.

  • the total electric field compared to the Rectangular Component of the electric field in a complex environment
    MATHEMATICAL MODELING OF WAVE PHENOMENA: 3rd Conference on Mathematical Modeling#N#of Wave Phenomena 20th Nordic Conference on Radio Science and Commu, 2009
    Co-Authors: Magnus Hoijer, Luk R Arnaut, Hans Georg Krauthauser
    Abstract:

    Strong electromagnetic waves can cause upset in and even destruction of electronic equipment. Therefore, the vulnerability of electronic equipment has to be tested. To be able to quantify the test, an unequivocal test parameter has to be defined. In the case that a plane wave is stressed onto the equipment it is easy; the strength of the electric field is an unequivocal test parameter. In an electromagnetically complex environment with electric fields polarized along different directions it is not so obvious what the test parameter should be. A reverberation chamber is an example of such a complex environment. Some people in the community advocate that a Rectangular Component of the field is the best measure of the strength of the field, but others advocate for that the total field (the vector sum of three orthogonal field Components) is the best. The most generic standard, the IEC 61000‐4‐21 prescribes the use of the Rectangular Component, but others prescribe the use of the total electric field. In this...

Hossein Imaneini - One of the best experts on this subject based on the ideXlab platform.

  • a new high switching frequency modulation technique to improve the dc link voltage utilization in multilevel converters
    IEEE Transactions on Industrial Electronics, 2017
    Co-Authors: Mohsen Aleenejad, Hamid Mahmoudi, Reza Ahmadi, Hossein Imaneini
    Abstract:

    This paper presents a new high-frequency modulation method for multilevel converters. The proposed method provides a broad linear operating range and can be digitally implemented with minimal computational effort. This modulation method creates a phase voltage composed of a Rectangular Component superimposed on the top of a quasi-square-shaped reference function. The reference functions are defined such that the utilization of the dc-link voltage is maximized in any modulation index, while the dv/dt of the switches is always the minimum possible value. In order to implement the proposed method, an update time that is much shorter than the fundamental period is defined in the algorithm for updating the Rectangular Components of the reference voltage. The high-frequency Rectangular Component can then be imposed on the reference function to generate the final switching function by switching between two voltage levels during the time between two update instances. Several experimental results are provided to evaluate the performance of the proposed method and to compare its operation to conventional methods.

Luk R Arnaut - One of the best experts on this subject based on the ideXlab platform.

  • the total electric field compared to the Rectangular Component of the electric field in a complex environment
    MATHEMATICAL MODELING OF WAVE PHENOMENA: 3rd Conference on Mathematical Modeling#N#of Wave Phenomena 20th Nordic Conference on Radio Science and Commu, 2009
    Co-Authors: Magnus Hoijer, Luk R Arnaut, Hans Georg Krauthauser
    Abstract:

    Strong electromagnetic waves can cause upset in and even destruction of electronic equipment. Therefore, the vulnerability of electronic equipment has to be tested. To be able to quantify the test, an unequivocal test parameter has to be defined. In the case that a plane wave is stressed onto the equipment it is easy; the strength of the electric field is an unequivocal test parameter. In an electromagnetically complex environment with electric fields polarized along different directions it is not so obvious what the test parameter should be. A reverberation chamber is an example of such a complex environment. Some people in the community advocate that a Rectangular Component of the field is the best measure of the strength of the field, but others advocate for that the total field (the vector sum of three orthogonal field Components) is the best. The most generic standard, the IEC 61000‐4‐21 prescribes the use of the Rectangular Component, but others prescribe the use of the total electric field. In this...

Mohsen Aleenejad - One of the best experts on this subject based on the ideXlab platform.

  • a new high switching frequency modulation technique to improve the dc link voltage utilization in multilevel converters
    IEEE Transactions on Industrial Electronics, 2017
    Co-Authors: Mohsen Aleenejad, Hamid Mahmoudi, Reza Ahmadi, Hossein Imaneini
    Abstract:

    This paper presents a new high-frequency modulation method for multilevel converters. The proposed method provides a broad linear operating range and can be digitally implemented with minimal computational effort. This modulation method creates a phase voltage composed of a Rectangular Component superimposed on the top of a quasi-square-shaped reference function. The reference functions are defined such that the utilization of the dc-link voltage is maximized in any modulation index, while the dv/dt of the switches is always the minimum possible value. In order to implement the proposed method, an update time that is much shorter than the fundamental period is defined in the algorithm for updating the Rectangular Components of the reference voltage. The high-frequency Rectangular Component can then be imposed on the reference function to generate the final switching function by switching between two voltage levels during the time between two update instances. Several experimental results are provided to evaluate the performance of the proposed method and to compare its operation to conventional methods.