The Experts below are selected from a list of 18975 Experts worldwide ranked by ideXlab platform

Henry Shu-hung Chung - One of the best experts on this subject based on the ideXlab platform.

  • A New $LCL$-Filter With In-Series Parallel Resonant Circuit for Single-Phase Grid-Tied Inverter
    IEEE Transactions on Industrial Electronics, 2014
    Co-Authors: Weimin Wu, Tianhao Tang, Frede Blaabjerg, Henry Shu-hung Chung
    Abstract:

    When designing a higher order output power filter for a transformerless grid-tied converter using pulsewidth modulation (PWM), the requirements on the leakage current, the electromagnetic interference (EMI) noise, and the harmonics of the grid-injected current should be addressed. For an LCL-filter-based single-phase grid-tied full-bridge inverter system, it is possible to decrease the total inductance as well as the size and the cost, if the harmonic currents around the switching frequency can be fully suppressed. In this paper, the grid-injected current harmonics and the conducted EMI noise are investigated for the conventional LCL-filter-based system. Based on this, a modified LCL-filter topology using an extra parallel LrCr Resonant Circuit is proposed to reduce the total inductance value, without increasing the capacitive reactive power. The validity is verified through the experiments on a 500-W 110-V/50-Hz prototype.

Weimin Wu - One of the best experts on this subject based on the ideXlab platform.

  • A New $LCL$-Filter With In-Series Parallel Resonant Circuit for Single-Phase Grid-Tied Inverter
    IEEE Transactions on Industrial Electronics, 2014
    Co-Authors: Weimin Wu, Tianhao Tang, Frede Blaabjerg, Henry Shu-hung Chung
    Abstract:

    When designing a higher order output power filter for a transformerless grid-tied converter using pulsewidth modulation (PWM), the requirements on the leakage current, the electromagnetic interference (EMI) noise, and the harmonics of the grid-injected current should be addressed. For an LCL-filter-based single-phase grid-tied full-bridge inverter system, it is possible to decrease the total inductance as well as the size and the cost, if the harmonic currents around the switching frequency can be fully suppressed. In this paper, the grid-injected current harmonics and the conducted EMI noise are investigated for the conventional LCL-filter-based system. Based on this, a modified LCL-filter topology using an extra parallel LrCr Resonant Circuit is proposed to reduce the total inductance value, without increasing the capacitive reactive power. The validity is verified through the experiments on a 500-W 110-V/50-Hz prototype.

Craig A Grimes - One of the best experts on this subject based on the ideXlab platform.

  • remote query Resonant Circuit sensors for monitoring of bacteria growth application to food quality control
    Sensors, 2002
    Co-Authors: Keat Ghee Ong, Samuel J Bitler, Craig A Grimes, Libby G Puckett, Leonidas G Bachas
    Abstract:

    This paper presents a technique for in-situ remote query monitoring of bacteria growth utilizing a printed thin or thick-film sensor comprised of an inductor-capacitor (LC) Resonant Circuit. The sensor, which is placed within the biological medium of interest and remotely detected using a loop antenna, measures the complex permittivity of the medium. Since bacteria growth increases the complex permittivity of a biological medium the LC sensor can be used to determine bacteria concentration. This paper presents results on monitoring of three different bacteria strains, Bacillus subtilis, Escherichia coli JM109, and Pseudomonas putida, demonstrating application of the sensor for monitoring bacteria growth in milk, meat, and beer. Due to its low unit cost and remote query detection, the sensor is potentially useful for commercial scale monitoring of food quality.

  • monitoring of bacteria growth using a wireless remote query Resonant Circuit sensor application to environmental sensing
    Biosensors and Bioelectronics, 2001
    Co-Authors: Keat Ghee Ong, J Wang, R S Singh, Leonidas G Achas, Craig A Grimes
    Abstract:

    A new technique is presented for in-vivo remote query measurement of the complex permittivity spectra of a biological culture solution. A sensor comprised of a printed inductor-capacitor Resonant-Circuit is placed within the culture solution of interest, with the impedance spectrum of the sensor measured using a remotely located loop antenna; the complex permittivity spectra of the culture is calculated from the measured impedance spectrum. The remote query nature of the sensor platform enables, for example, the in-vivo real-time monitoring of bacteria or yeast growth from within sealed opaque containers. The wireless monitoring technique does not require a specific alignment between sensor and antenna. Results are presented for studies conducted on laboratory strains of Bacillus subtilis, Escherichia coli JM109, Pseudomonas putida and Saccharomyces cerevisiae.

J.-c. Vaissière - One of the best experts on this subject based on the ideXlab platform.

  • Theoretical Investigation of Schottky-barrier Diodes Noise Performance in External Resonant Circuit
    Semiconductor Science and Technology, 2006
    Co-Authors: P. Shiktorov, E. Starikov, V. Gruzinskis, S. Perez, T. Gonzalez, L. Reggiani, L. Varani, J.-c. Vaissière
    Abstract:

    We report Monte Carlo simulations of electronic noise in heavily doped nanometric GaAs Schottky-barrier diodes (SBDs) recently proposed as promising devices for THz applications. We consider a SBD operating in series with a parallel output Resonant Circuit when a high-frequency large-signal voltage is applied to the whole system. Significant modifications of the noise spectrum with respect to the diode subjected to a constant applied voltage are found to occur in the THz-region. To interpret such behaviour, we have developed a simple analytical approach based on the static I-V and C-V relations as well as on the series resistance of the SBD

  • Theoretical investigation of large-signal noise in nanometric Schottky-barrier diodes operating in external Resonant Circuit
    Acta Physica Polonica A, 2005
    Co-Authors: P. Shiktorov, E. Starikov, V. Gruzinskis, L. Reggiani, L. Varani, J.-c. Vaissière, S. Perez
    Abstract:

    We report Monte Carlo simulations of electronic noise in heavily doped nanometric GaAs Schottky-barrier diodes (SBDs) recently proposed as promising devices for THz applications. We consider a SBD operating in series with a parallel output Resonant Circuit when a high-frequency large-signal voltage is applied to the whole system. Significant modifications of the noise spectrum with respect to the diode subjected to a constant applied voltage are found to occur in the THz-region. To interpret such behaviour, we have developed a simple analytical approach based on the static I-V and C-V relations as well as on the series resistance of the SBD.

Keat Ghee Ong - One of the best experts on this subject based on the ideXlab platform.

  • remote query Resonant Circuit sensors for monitoring of bacteria growth application to food quality control
    Sensors, 2002
    Co-Authors: Keat Ghee Ong, Samuel J Bitler, Craig A Grimes, Libby G Puckett, Leonidas G Bachas
    Abstract:

    This paper presents a technique for in-situ remote query monitoring of bacteria growth utilizing a printed thin or thick-film sensor comprised of an inductor-capacitor (LC) Resonant Circuit. The sensor, which is placed within the biological medium of interest and remotely detected using a loop antenna, measures the complex permittivity of the medium. Since bacteria growth increases the complex permittivity of a biological medium the LC sensor can be used to determine bacteria concentration. This paper presents results on monitoring of three different bacteria strains, Bacillus subtilis, Escherichia coli JM109, and Pseudomonas putida, demonstrating application of the sensor for monitoring bacteria growth in milk, meat, and beer. Due to its low unit cost and remote query detection, the sensor is potentially useful for commercial scale monitoring of food quality.

  • monitoring of bacteria growth using a wireless remote query Resonant Circuit sensor application to environmental sensing
    Biosensors and Bioelectronics, 2001
    Co-Authors: Keat Ghee Ong, J Wang, R S Singh, Leonidas G Achas, Craig A Grimes
    Abstract:

    A new technique is presented for in-vivo remote query measurement of the complex permittivity spectra of a biological culture solution. A sensor comprised of a printed inductor-capacitor Resonant-Circuit is placed within the culture solution of interest, with the impedance spectrum of the sensor measured using a remotely located loop antenna; the complex permittivity spectra of the culture is calculated from the measured impedance spectrum. The remote query nature of the sensor platform enables, for example, the in-vivo real-time monitoring of bacteria or yeast growth from within sealed opaque containers. The wireless monitoring technique does not require a specific alignment between sensor and antenna. Results are presented for studies conducted on laboratory strains of Bacillus subtilis, Escherichia coli JM109, Pseudomonas putida and Saccharomyces cerevisiae.