The Experts below are selected from a list of 2559 Experts worldwide ranked by ideXlab platform

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

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    IEEE Transactions on Industry Applications, 2011
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of state-of-the-art semiconductor devices and magnetic cores has driven power electronic engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc-dc Converter. The high-frequency (20-kHz) transformer in the dc-dc Converter is much smaller, for example, one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a three-phase three-wire 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    Energy Conversion Congress and Exposition, 2009
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for low-voltage (200 or 400 V) applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of the state-of-the-art semiconductor devices and magnetic cores has driven power electronics engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses control and performance of a DVR including a high-frequency isolated dc-dc Converter intended for 200 or 400-V applications. The high-frequency (20 kHz) transformer in the dc-dc Converter is much smaller, say one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

  • Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element
    IEEE Transactions on Industry Applications, 2005
    Co-Authors: T. Jimichi, Hirofumi Akagi
    Abstract:

    This paper deals with a dynamic voltage restorer (DVR), or a voltage-sag compensator, which consists of a set of series and Shunt Converters connected back-to-back, three series transformers, and a dc capacitor installed on the common dc link. The DVR is characterized by installing the series Converter on the source side and the Shunt Converter on the load side. This system configuration allows the use of an extremely small dc capacitor intended for smoothing the common dc-link voltage. This paper provides a design procedure of the dc capacitor under a voltage-sag condition, and proposes a control method for the series Converter, which is capable of reducing the voltage ratings of both the series Converter and the series transformers. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to confirm the validity of the design procedure, and the effectiveness of the control method.

T. Jimichi - One of the best experts on this subject based on the ideXlab platform.

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    IEEE Transactions on Industry Applications, 2011
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of state-of-the-art semiconductor devices and magnetic cores has driven power electronic engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc-dc Converter. The high-frequency (20-kHz) transformer in the dc-dc Converter is much smaller, for example, one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a three-phase three-wire 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    Energy Conversion Congress and Exposition, 2009
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for low-voltage (200 or 400 V) applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of the state-of-the-art semiconductor devices and magnetic cores has driven power electronics engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses control and performance of a DVR including a high-frequency isolated dc-dc Converter intended for 200 or 400-V applications. The high-frequency (20 kHz) transformer in the dc-dc Converter is much smaller, say one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

  • Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element
    IEEE Transactions on Industry Applications, 2005
    Co-Authors: T. Jimichi, Hirofumi Akagi
    Abstract:

    This paper deals with a dynamic voltage restorer (DVR), or a voltage-sag compensator, which consists of a set of series and Shunt Converters connected back-to-back, three series transformers, and a dc capacitor installed on the common dc link. The DVR is characterized by installing the series Converter on the source side and the Shunt Converter on the load side. This system configuration allows the use of an extremely small dc capacitor intended for smoothing the common dc-link voltage. This paper provides a design procedure of the dc capacitor under a voltage-sag condition, and proposes a control method for the series Converter, which is capable of reducing the voltage ratings of both the series Converter and the series transformers. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to confirm the validity of the design procedure, and the effectiveness of the control method.

Hideaki Fujita - One of the best experts on this subject based on the ideXlab platform.

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    IEEE Transactions on Industry Applications, 2011
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of state-of-the-art semiconductor devices and magnetic cores has driven power electronic engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc-dc Converter. The high-frequency (20-kHz) transformer in the dc-dc Converter is much smaller, for example, one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a three-phase three-wire 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

  • a dynamic voltage restorer equipped with a high frequency isolated dc dc Converter
    Energy Conversion Congress and Exposition, 2009
    Co-Authors: T. Jimichi, Hideaki Fujita, Hirofumi Akagi
    Abstract:

    This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc Converter. A traditional DVR has a large and bulky series transformer even for low-voltage (200 or 400 V) applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of the state-of-the-art semiconductor devices and magnetic cores has driven power electronics engineers to develop compact high-frequency isolated dc-dc Converters. This paper discusses control and performance of a DVR including a high-frequency isolated dc-dc Converter intended for 200 or 400-V applications. The high-frequency (20 kHz) transformer in the dc-dc Converter is much smaller, say one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the Shunt Converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

Smail Zouggar - One of the best experts on this subject based on the ideXlab platform.

  • the buck boost Shunt Converter for the pv systems
    International Conference on Electronic Engineering and Renewable Energy, 2018
    Co-Authors: Seddik Mohammed, Smail Zouggar
    Abstract:

    Many applications of renewable energy are dedicated to energy storage, typically in the form of a lead acid battery, for example, energy storage by a Photovoltaic system. For this, the use of a standard DC-DC Converter to protect and charge battery without changing the Converter is required. The Buck/Boost Converter allows achieving these roles. This paper presents the non-inverted Buck/Boost Shunt architecture and proposes an automatic voltage control development. The simulation results on Orcad-Pspice are used to demonstrate the good performance and feasibility of the proposed system together with the proposed control strategy.

  • the new architecture of a buck boost Shunt Converter non inverter dedicated to the wind turbine system with a high efficiency
    International Renewable and Sustainable Energy Conference, 2014
    Co-Authors: M Seddik, Smail Zouggar, Bader Lahfaoui, Mohammed Elhafyani, Abdelhak Aziz
    Abstract:

    Many applications often require a power supply with a constant voltage, e.g: a 311V output from a wind alternative source varies from 240V to 340V. Faced to this requirement, the use of a DC-DC Buck/Boost Converter associated with a rectifier is required. Several architectures of the Buck/Boost choppers have been proposed in the literature; among these architectures, we find the classic Buck/Boost and Buck+Boost in cascade. These ones have a low yield and can also reverse the sign over the entrance. In this article, we present the new Buck/Boost Shunt non-inverted architecture with a higher yield than the other topologies. Moreover, we propose a switch command to switch the system between Buck and Boost function. Simulation results on Orcad Pspice show that the proposed system can provide a very good efficiency and excellent performance.

Josep M Guerrero - One of the best experts on this subject based on the ideXlab platform.

  • interval type 2 fuzzy logic controlled Shunt Converter coupled novel high quality charging scheme for electric vehicles
    IEEE Transactions on Industrial Informatics, 2021
    Co-Authors: Balasundar Chelladurai, Chinnayan Karuppaiyah Sundarabalan, Srinath Nangavaram Santhanam, Josep M Guerrero
    Abstract:

    The deployment of electric vehicle charging stations degrades the quality of power in the distribution grid. This article proposes an interval type-2 fuzzy logic controlled Shunt Converter coupled novel high-quality charging scheme for electric vehicles. This system includes three-phase bidirectional front-end ac–dc pulsewidth modulation (PWM) Converter, backend dc–dc PWM Converter and three-phase three-wire distribution static compensator. The bidirectional Converters help to perform both grid to vehicle and vehicle to grid mode of operations. The combination of dc-link voltage with decoupled current control technique is exploited for ac–dc Converter. A multistep constant current control technique is proposed for the dc–dc Converter to charge and discharge the battery. A fuzzy logic controller based instantaneous reactive power theory control method is proposed for Shunt Converter. The performance of type-1, interval type-2, and real coded genetic algorithm optimized fuzzy logic controllers are evaluated by the Shunt Converter dc-link voltage and the total harmonic distortion of the source current. Lithium-ion batteries are utilized as an energy storage device for electric vehicles in the proposed system. The entire system is modeled and evaluated in the MATLAB/Simulink environment. An interval type-2 and real coded genetic algorithm optimized fuzzy logic controller affords the better performance during V2G and G2V operations, respectively.