The Experts below are selected from a list of 195 Experts worldwide ranked by ideXlab platform

Nadir Idir - One of the best experts on this subject based on the ideXlab platform.

  • Design Method for the Minimization of CM Inductor Volume with Consideration of Core Saturation in EMI Filters
    PCIM Europe 2017; International Exhibition and Conference for Power Electronics Intelligent Motion Renewable Energy and Energy Management, 2017
    Co-Authors: Bilel Zaidi, Arnaud Videt, Nadir Idir
    Abstract:

    EMI filters are necessary in many applications in order to meet EMC standards, which significantly increase overall cost and volume mainly because of the Common-Mode Choke. In this paper, a new method to calculate the minimum volume of the inductor is proposed. It takes into account core saturation issues that may greatly impact inductor volume. Consequently, it is shown that in some cases, increasing the inductance up to an optimal value can significantly reduce the filter volume in addition to further enhancing filter attenuation. Besides, determination of the filter resonance frequency with nano-crystalline material is worked out to support the analysis.

  • Leakage Inductance Analytical Calculation for Planar Components With Leakage Layers
    IEEE Transactions on Power Electronics, 2016
    Co-Authors: Wenhua Tan, Xavier Margueron, Laurent Taylor, Nadir Idir
    Abstract:

    Planar magnetic components are promising solutions for the integration of power electronic systems. The leakage inductance of such components plays an essential role in power converters. In this paper, an analytical Modeling method for leakage inductance computation is developed for planar components with plastoferrite leakage layers. This method is based on the solution of Poisson's equations for magnetostatic using multilayered Green's functions. The obtained formulations are general and precise and have been validated by numerical tests. Experimental characterizations have been performed on two magnetic components: A planar LLC and planar Common-Mode Choke. The obtained results show that with the described method, the static leakage inductance of planar components can be accurately estimated.

  • A High Frequency Equivalent Circuit and Parameter Extraction Procedure for Common Mode Choke in the EMI Filter
    IEEE Transactions on Power Electronics, 2013
    Co-Authors: Carlos Cuellar, Xavier Margueron, Nadir Idir
    Abstract:

    Power converters with high switching frequency generate conducted electromagnetic interference (EMI) noise. EMI filters are thus widely used to reduce these conducted noises for the compliance with electromagnetic compatibility standards. In this paper, a high-frequency (HF) equivalent circuit Model for Common Mode (CM) Chokes used in EMI filters is proposed together with its parameter extraction procedure. This procedure is based on impedance measurements and it incorporates an iterative rational function approximation fitting algorithm to extract the parameters in the Model. The proposed Model and procedure is applied to a planar CM Choke which is used to realize an EMI filter. The simulated results of the filter show good agreement with the experimental ones. This extraction procedure is quite general and it can also be extended to identify the HF Model of other passive components.

  • A Common-Mode Choke Using Toroid-EQ Mixed Structure
    IEEE Transactions on Power Electronics, 2013
    Co-Authors: Carlos Cuellar, Xavier Margueron, Nadir Idir
    Abstract:

    Electromagnetic interference (EMI) filters are main solutions to suppress the conducted emissions from static power converters. For some years, integration techniques for EMI filters have been widely investigated to realize more compact systems. In this letter, a Common-Mode (CM) Choke with toroid-EQ mixed structure is presented. This structure is constituted of a toroidal CM Choke embedded into an EQ core. The proposed toroid-EQ CM Choke presents threefold advantages. First, it effectively increases the leakage inductance of the toroidal CM Choke and hence increases the differential-Mode inductance. Second, it reduces the parasitic coupling between the Choke and the filter capacitors. Finally, the component can be easily fabricated with low cost. Experimental verifications have been carried out to validate the effectiveness of the proposed toroid-EQ CM Choke.

Hirofumi Akagi - One of the best experts on this subject based on the ideXlab platform.

  • a transformerless back to back btb system using modular multilevel cascade converters for power distribution systems
    IEEE Transactions on Power Electronics, 2015
    Co-Authors: Pracha Khamphakdi, Kei Sekiguchi, Makoto Hagiwara, Hirofumi Akagi
    Abstract:

    This paper presents an intensive discussion on a transformerless back-to-back (BTB) system using modular multilevel cascade converters based on double-star chopper cells (MMCC-DSCC). It is expected to be applied to a power distribution system with many distributed power generators. This paper designs, constructs, and tests a three-phase 200-V, 10-kW DSCC-based BTB system installed on a 200-V, 40-kW power distribution simulator consisting of two radial feeders. Experimental results show that the BTB system can mitigate power-flow imbalance between the two feeders. Moreover, the zero-sequence current circulating between the two feeders can be suppressed to be as small as 10 mA ( $0.02\%$ ) in rms by connecting a Common-Mode Choke to the Common dc link of the BTB system.

  • Modeling and damping of high frequency leakage currents in pwm inverter fed ac motor drive systems
    IEEE Industry Applications Society Annual Meeting, 1995
    Co-Authors: Satoshi Ogasawara, Hirofumi Akagi
    Abstract:

    This paper presents an equivalent circuit for high-frequency leakage currents in pulsewidth modulation (PWM) inverter-fed AC motors, which forms a series resonant circuit. The analysis based on the equivalent circuit leads to such a conclusion that the connection of a conventional Common-Mode Choke or reactor in series between the AC terminals of a PWM inverter and those of an AC motor is not effective to reduce the rms and average values of the leakage current, but effective to reduce the peak value. Furthermore, this paper proposes a Common-Mode transformer which is different in damping principle from the conventional Common-Mode Choke. It is shown theoretically and experimentally that the Common-Mode transformer is able to reduce the rms value of the leakage current to 25%, where the core used in the Common-Mode transformer is smaller than that of the conventional Common-Mode Choke.

Yenshin Lai - One of the best experts on this subject based on the ideXlab platform.

  • effective emi filter design method for three phase inverter based upon software noise separation
    The International Power Electronics Conference - ECCE ASIA, 2010
    Co-Authors: Poshen Chen, Yenshin Lai
    Abstract:

    This paper presents a new design method of three-phase inverter for motor drives using software noise separation method. Therefore, no hardware noise separator is required. Moreover, the presented EMI filter design approach provides systematic design procedure and therefore trial-and-error overhead is not required and thereby shortening the development time and saving the cost. The presented method determines Common-Mode Choke and differential-Mode Choke based upon the required impedance of to attenuate the noise. A three-phase inverter for inductor motor drives is used as the EUT and the related conductive EMI filter is designed and verified. It will be shown that EMI filter designed by this systematic design method effectively attenuates the EMI components to meet the requirement of EN 55011.

  • effective emi filter design method for three phase inverter based upon software noise separation
    IEEE Transactions on Power Electronics, 2010
    Co-Authors: Poshen Chen, Yenshin Lai
    Abstract:

    This paper presents an electromagnetic interference (EMI) filter design method for a three-phase inverter applied to motor drives. The EMI filter design is based upon the results of software noise-separation method. Therefore, no hardware noise separator is required. Moreover, the presented EMI filter design approach provides systematic design procedure, and therefore, trial-and-error overhead is not required, and thereby, shortening the development time and saving the cost. The presented method determines Common-Mode Choke and differential-Mode Choke based upon the required impedance to attenuate the noise. A three-phase inverter for inductor motor drives is used as the equipment under test (EUT), and the related conductive EMI filter is designed and verified. It will be shown that EMI filter designed by this systematic design method effectively attenuates the conductive EMI components to meet the requirement of EN 55011.

Xavier Margueron - One of the best experts on this subject based on the ideXlab platform.

  • Leakage Inductance Analytical Calculation for Planar Components With Leakage Layers
    IEEE Transactions on Power Electronics, 2016
    Co-Authors: Wenhua Tan, Xavier Margueron, Laurent Taylor, Nadir Idir
    Abstract:

    Planar magnetic components are promising solutions for the integration of power electronic systems. The leakage inductance of such components plays an essential role in power converters. In this paper, an analytical Modeling method for leakage inductance computation is developed for planar components with plastoferrite leakage layers. This method is based on the solution of Poisson's equations for magnetostatic using multilayered Green's functions. The obtained formulations are general and precise and have been validated by numerical tests. Experimental characterizations have been performed on two magnetic components: A planar LLC and planar Common-Mode Choke. The obtained results show that with the described method, the static leakage inductance of planar components can be accurately estimated.

  • A High Frequency Equivalent Circuit and Parameter Extraction Procedure for Common Mode Choke in the EMI Filter
    IEEE Transactions on Power Electronics, 2013
    Co-Authors: Carlos Cuellar, Xavier Margueron, Nadir Idir
    Abstract:

    Power converters with high switching frequency generate conducted electromagnetic interference (EMI) noise. EMI filters are thus widely used to reduce these conducted noises for the compliance with electromagnetic compatibility standards. In this paper, a high-frequency (HF) equivalent circuit Model for Common Mode (CM) Chokes used in EMI filters is proposed together with its parameter extraction procedure. This procedure is based on impedance measurements and it incorporates an iterative rational function approximation fitting algorithm to extract the parameters in the Model. The proposed Model and procedure is applied to a planar CM Choke which is used to realize an EMI filter. The simulated results of the filter show good agreement with the experimental ones. This extraction procedure is quite general and it can also be extended to identify the HF Model of other passive components.

  • A Common-Mode Choke Using Toroid-EQ Mixed Structure
    IEEE Transactions on Power Electronics, 2013
    Co-Authors: Carlos Cuellar, Xavier Margueron, Nadir Idir
    Abstract:

    Electromagnetic interference (EMI) filters are main solutions to suppress the conducted emissions from static power converters. For some years, integration techniques for EMI filters have been widely investigated to realize more compact systems. In this letter, a Common-Mode (CM) Choke with toroid-EQ mixed structure is presented. This structure is constituted of a toroidal CM Choke embedded into an EQ core. The proposed toroid-EQ CM Choke presents threefold advantages. First, it effectively increases the leakage inductance of the toroidal CM Choke and hence increases the differential-Mode inductance. Second, it reduces the parasitic coupling between the Choke and the filter capacitors. Finally, the component can be easily fabricated with low cost. Experimental verifications have been carried out to validate the effectiveness of the proposed toroid-EQ CM Choke.

Poshen Chen - One of the best experts on this subject based on the ideXlab platform.

  • effective emi filter design method for three phase inverter based upon software noise separation
    The International Power Electronics Conference - ECCE ASIA, 2010
    Co-Authors: Poshen Chen, Yenshin Lai
    Abstract:

    This paper presents a new design method of three-phase inverter for motor drives using software noise separation method. Therefore, no hardware noise separator is required. Moreover, the presented EMI filter design approach provides systematic design procedure and therefore trial-and-error overhead is not required and thereby shortening the development time and saving the cost. The presented method determines Common-Mode Choke and differential-Mode Choke based upon the required impedance of to attenuate the noise. A three-phase inverter for inductor motor drives is used as the EUT and the related conductive EMI filter is designed and verified. It will be shown that EMI filter designed by this systematic design method effectively attenuates the EMI components to meet the requirement of EN 55011.

  • effective emi filter design method for three phase inverter based upon software noise separation
    IEEE Transactions on Power Electronics, 2010
    Co-Authors: Poshen Chen, Yenshin Lai
    Abstract:

    This paper presents an electromagnetic interference (EMI) filter design method for a three-phase inverter applied to motor drives. The EMI filter design is based upon the results of software noise-separation method. Therefore, no hardware noise separator is required. Moreover, the presented EMI filter design approach provides systematic design procedure, and therefore, trial-and-error overhead is not required, and thereby, shortening the development time and saving the cost. The presented method determines Common-Mode Choke and differential-Mode Choke based upon the required impedance to attenuate the noise. A three-phase inverter for inductor motor drives is used as the equipment under test (EUT), and the related conductive EMI filter is designed and verified. It will be shown that EMI filter designed by this systematic design method effectively attenuates the conductive EMI components to meet the requirement of EN 55011.