6,972 research outputs found

    LC compensators for power factor correction of nonlinear loads

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    This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. Copyright @ 2004 IEEEA method is presented for finding the optimum fixed LC compensator for power factor correction of nonlinear loads where both source voltage and load current harmonics are present. The LC combination is selected because pure capacitive capacitors alone would not sufficiently correct the power factor. Optimization minimizes the transmission loss, maximizes the power factor, and maximizes the efficiency. The performance of the obtained compensator is discussed by means of numerical examples

    LC compensators based on transmission loss minimization for nonlinear loads

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    This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. Copyright @ 2004 IEEEThis paper presents a method employing the penalty function search algorithm to determine the LC compensator value for the optimal power factor correction in nonsinusoidal systems. The objective of the proposed method is to minimize the transmission loss while the power factor and efficiency are taken as constraints and utilized in order to solve the multiobjective optimization problem by transforming it into a single objective one. Examples show that the load nonlinearity can have a significant impact on optimal compensator sizes

    Flavonoids profile in methanolic extracts from ragweed-pollen samples by LC-MS/MS

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    Flavonoids profile in methanolic extracts from ragweed-pollen samples has been characterized by LC-MS/MS. A total of 62 flavonoid metabolites were identified and listed

    Flavonoids profile in methanolic extracts from ragweed-pollen samples by LC-MS/MS

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    Flavonoids profile in methanolic extracts from ragweed-pollen samples has been characterized by LC-MS/MS. A total of 62 flavonoid metabolites were identified and listed

    LC-MS Raw Data RARRES1 KD (7) (xag)

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    We split the LC-MS raw data using the "Split" Linux function into 17 files (combine using "cat xaa xab ... > lcms.zip"
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