The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform

X. Dai-do - One of the best experts on this subject based on the ideXlab platform.

  • Short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydrogenerator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

  • Line-to-line short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydro-generator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous-machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

Rene Wamkeue - One of the best experts on this subject based on the ideXlab platform.

  • Short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydrogenerator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

  • Line-to-line short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydro-generator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous-machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

Haidong Li - One of the best experts on this subject based on the ideXlab platform.

  • modularized open pcba printed Circuit board assembly functional Circuit Test fct platform
    2012
    Co-Authors: Peng Li, Xianwei Kang, Jiabin Lu, Sichuan Li, Chuantao Li, Liang Liu, Shengyong Wang, Hui Xu, Haidong Li
    Abstract:

    The utility model provides a modularized open PCBA (Printed Circuit Board Assembly) functional Circuit Test (FCT) platform which is used for effectively controlling the quality of PCBA products in a semi-automatic Test mode. The Testing platform adopts a probe bed and a relay switch group controlled by a singlechip. When different PCBAs are Tested, probes of the probe bed are rearranged, and one ends of the probes are connected with a relay, so that the expansibility is improved; and in consideration of system reusability, one Test platform matched with one type of PCBAs is manufactured in advance, and when the types of PCBAs are Tested, the corresponding Test platform is replaced, and a Test file is opened, so that the Testing efficiency is improved greatly. The Test instrument can be replaced according to Test needs, so that the system Testing function is expanded.

  • modularized open pcba printed Circuit board assembly functional Circuit Test platform system and method
    2012
    Co-Authors: Peng Li, Xianwei Kang, Jiabin Lu, Sichuan Li, Chuantao Li, Liang Liu, Shengyong Wang, Hui Xu, Haidong Li
    Abstract:

    The invention provides a modularized open PCBA (Printed Circuit Board Assembly) functional Circuit Test platform, system and method. The quality of a PCBA product is effectively controlled by using a half-automatic Test manner. When a Test table uses a needle bed and a relay switching group controlled by a single chip microcomputer to Test different PCBAs, probes of the needle bed are reconfigured, and then one ends of the probes are connected with a relay, so that the expansibility is improved. In view of the system reusability, the Test table matched with one type of the PCBA is pre-manufactured. When the PCBA is Tested by only using the corresponding Test table and opening an atTest file, the Test efficiency is greatly improved. A Test instrument can be replaced according to Test demands, so as to expand a system Test function. The modularization open PCBA functional Circuit Test platform is a core of an entire Test platform to control the operation state of the entire Test process and is used for judging and recording the Test content and result of each step, so that the Test result is finally obtained. The modularized open PCBA functional Circuit Test platform is convenient to store and output the data.

Innocent Kamwa - One of the best experts on this subject based on the ideXlab platform.

  • Short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydrogenerator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

  • Line-to-line short-Circuit Test based maximum likelihood estimation of stability model of large generators
    IEEE Transactions on Energy Conversion, 1999
    Co-Authors: Rene Wamkeue, Innocent Kamwa, X. Dai-do
    Abstract:

    This paper presents a time-domain statistical identification method for synchronous-machine linear parameters from the standard line-to-line short-Circuit Test. The measurements are recorded on a 13.75-MVA hydro-generator at Hydro-Quebec's Rapide-des-Quinze generating station. A complete mathematical model for synchronous-machine asymmetrical Test analysis is proposed. An efficient algorithm is built to accurately calculate the standard equivalent Circuit from time-constants and operational inductances. The maximum likelihood estimator derived from the generalized least-squares method is then used for parameter identification. Validation of the estimated model response against the measured running-time domain data confirms the effectiveness of the proposed estimation technique.

Peng Li - One of the best experts on this subject based on the ideXlab platform.

  • modularized open pcba printed Circuit board assembly functional Circuit Test fct platform
    2012
    Co-Authors: Peng Li, Xianwei Kang, Jiabin Lu, Sichuan Li, Chuantao Li, Liang Liu, Shengyong Wang, Hui Xu, Haidong Li
    Abstract:

    The utility model provides a modularized open PCBA (Printed Circuit Board Assembly) functional Circuit Test (FCT) platform which is used for effectively controlling the quality of PCBA products in a semi-automatic Test mode. The Testing platform adopts a probe bed and a relay switch group controlled by a singlechip. When different PCBAs are Tested, probes of the probe bed are rearranged, and one ends of the probes are connected with a relay, so that the expansibility is improved; and in consideration of system reusability, one Test platform matched with one type of PCBAs is manufactured in advance, and when the types of PCBAs are Tested, the corresponding Test platform is replaced, and a Test file is opened, so that the Testing efficiency is improved greatly. The Test instrument can be replaced according to Test needs, so that the system Testing function is expanded.

  • modularized open pcba printed Circuit board assembly functional Circuit Test platform system and method
    2012
    Co-Authors: Peng Li, Xianwei Kang, Jiabin Lu, Sichuan Li, Chuantao Li, Liang Liu, Shengyong Wang, Hui Xu, Haidong Li
    Abstract:

    The invention provides a modularized open PCBA (Printed Circuit Board Assembly) functional Circuit Test platform, system and method. The quality of a PCBA product is effectively controlled by using a half-automatic Test manner. When a Test table uses a needle bed and a relay switching group controlled by a single chip microcomputer to Test different PCBAs, probes of the needle bed are reconfigured, and then one ends of the probes are connected with a relay, so that the expansibility is improved. In view of the system reusability, the Test table matched with one type of the PCBA is pre-manufactured. When the PCBA is Tested by only using the corresponding Test table and opening an atTest file, the Test efficiency is greatly improved. A Test instrument can be replaced according to Test demands, so as to expand a system Test function. The modularization open PCBA functional Circuit Test platform is a core of an entire Test platform to control the operation state of the entire Test process and is used for judging and recording the Test content and result of each step, so that the Test result is finally obtained. The modularized open PCBA functional Circuit Test platform is convenient to store and output the data.