The Experts below are selected from a list of 132 Experts worldwide ranked by ideXlab platform
Laurence Miègeville - One of the best experts on this subject based on the ideXlab platform.
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Multivariate Event Detection Methods for Non-intrusive Load Monitoring in Smart Homes and Residential Buildings
Energy and Buildings, 2020Co-Authors: Sarra Houidi, François Auger, Houda Ben Attia Sethom, Dominique Fourer, Laurence MiègevilleAbstract:Non-intrusive Load Monitoring (NILM) approaches refer to the analysis of the aggregated electrical signals of Home Electrical Appliances (HEAs) in order to identify each of them. It has emerged as a promising solution to help residential consumers to reduce their electricity bills through a breakdown of energy consumption. NILM methods are either event-based or non event-based. This categorization depends on whether or not they rely on the detection of HEAs' significant state transitions (e.g. On/Off or state Change) in Power consumption signals. This paper focuses on event-based approaches and particularly in multivariate Change detection algorithms. It aims at highlighting the benefits provided by a multivariate approach for Change detection using the appropriate electrical features. To do so, we first propose to improve by extending four existing Change detection algorithms in the multidimensional case. The studied detection algorithms are first detailed and compared to each other and to their existing scalar versions through numerical simulations. Then, a new feature selection algorithm for Change detection is proposed and assessed when combined with the most efficient detector among the four investigated ones. Finally, the feature selection method for detection purposes is applied to two different NILM case studies. The first one uses Power features derived from the BLUED current and voltage measurements and the second one is based on real-world current and voltage measurements acquired using our own acquisition system. The results show a significant improvement in terms of performance and accuracy of the multivariate approach over the classical scalar one when using the features selected by the proposed algorithm.
Achim Kienle - One of the best experts on this subject based on the ideXlab platform.
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a strategy for the spatial temperature control of a molten carbonate fuel cell system
Journal of Power Sources, 2006Co-Authors: Min Sheng, Michael Mangold, Achim KienleAbstract:The object of the paper is to develop a simple and practical control strategy for a molten carbonate fuel cell (MCFC) system. Based on a dynamic model and the control demand, a cascade control strategy is designed. The master controller imposes a Change of cell current representing a Change in Power demand and sets the amount of fuel gas, the steam-to-carbon ratio, the air number and the cathode gas recycle ratio to their corresponding conditions for optimal steady state electric efficiency. Two feedback PID controllers are in the inner loop, one guarantees the solid temperature not to exceed a maximum temperature by changing the air number around the default set by the master controller; the other controls the maximum temperature difference by adjusting the steam-to-carbon ratio. Step response tests show that this control strategy works well when the cell current Changes.
Sarra Houidi - One of the best experts on this subject based on the ideXlab platform.
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Multivariate Event Detection Methods for Non-intrusive Load Monitoring in Smart Homes and Residential Buildings
Energy and Buildings, 2020Co-Authors: Sarra Houidi, François Auger, Houda Ben Attia Sethom, Dominique Fourer, Laurence MiègevilleAbstract:Non-intrusive Load Monitoring (NILM) approaches refer to the analysis of the aggregated electrical signals of Home Electrical Appliances (HEAs) in order to identify each of them. It has emerged as a promising solution to help residential consumers to reduce their electricity bills through a breakdown of energy consumption. NILM methods are either event-based or non event-based. This categorization depends on whether or not they rely on the detection of HEAs' significant state transitions (e.g. On/Off or state Change) in Power consumption signals. This paper focuses on event-based approaches and particularly in multivariate Change detection algorithms. It aims at highlighting the benefits provided by a multivariate approach for Change detection using the appropriate electrical features. To do so, we first propose to improve by extending four existing Change detection algorithms in the multidimensional case. The studied detection algorithms are first detailed and compared to each other and to their existing scalar versions through numerical simulations. Then, a new feature selection algorithm for Change detection is proposed and assessed when combined with the most efficient detector among the four investigated ones. Finally, the feature selection method for detection purposes is applied to two different NILM case studies. The first one uses Power features derived from the BLUED current and voltage measurements and the second one is based on real-world current and voltage measurements acquired using our own acquisition system. The results show a significant improvement in terms of performance and accuracy of the multivariate approach over the classical scalar one when using the features selected by the proposed algorithm.
Dominique Fourer - One of the best experts on this subject based on the ideXlab platform.
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Multivariate Event Detection Methods for Non-intrusive Load Monitoring in Smart Homes and Residential Buildings
Energy and Buildings, 2020Co-Authors: Sarra Houidi, François Auger, Houda Ben Attia Sethom, Dominique Fourer, Laurence MiègevilleAbstract:Non-intrusive Load Monitoring (NILM) approaches refer to the analysis of the aggregated electrical signals of Home Electrical Appliances (HEAs) in order to identify each of them. It has emerged as a promising solution to help residential consumers to reduce their electricity bills through a breakdown of energy consumption. NILM methods are either event-based or non event-based. This categorization depends on whether or not they rely on the detection of HEAs' significant state transitions (e.g. On/Off or state Change) in Power consumption signals. This paper focuses on event-based approaches and particularly in multivariate Change detection algorithms. It aims at highlighting the benefits provided by a multivariate approach for Change detection using the appropriate electrical features. To do so, we first propose to improve by extending four existing Change detection algorithms in the multidimensional case. The studied detection algorithms are first detailed and compared to each other and to their existing scalar versions through numerical simulations. Then, a new feature selection algorithm for Change detection is proposed and assessed when combined with the most efficient detector among the four investigated ones. Finally, the feature selection method for detection purposes is applied to two different NILM case studies. The first one uses Power features derived from the BLUED current and voltage measurements and the second one is based on real-world current and voltage measurements acquired using our own acquisition system. The results show a significant improvement in terms of performance and accuracy of the multivariate approach over the classical scalar one when using the features selected by the proposed algorithm.
Houda Ben Attia Sethom - One of the best experts on this subject based on the ideXlab platform.
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Multivariate Event Detection Methods for Non-intrusive Load Monitoring in Smart Homes and Residential Buildings
Energy and Buildings, 2020Co-Authors: Sarra Houidi, François Auger, Houda Ben Attia Sethom, Dominique Fourer, Laurence MiègevilleAbstract:Non-intrusive Load Monitoring (NILM) approaches refer to the analysis of the aggregated electrical signals of Home Electrical Appliances (HEAs) in order to identify each of them. It has emerged as a promising solution to help residential consumers to reduce their electricity bills through a breakdown of energy consumption. NILM methods are either event-based or non event-based. This categorization depends on whether or not they rely on the detection of HEAs' significant state transitions (e.g. On/Off or state Change) in Power consumption signals. This paper focuses on event-based approaches and particularly in multivariate Change detection algorithms. It aims at highlighting the benefits provided by a multivariate approach for Change detection using the appropriate electrical features. To do so, we first propose to improve by extending four existing Change detection algorithms in the multidimensional case. The studied detection algorithms are first detailed and compared to each other and to their existing scalar versions through numerical simulations. Then, a new feature selection algorithm for Change detection is proposed and assessed when combined with the most efficient detector among the four investigated ones. Finally, the feature selection method for detection purposes is applied to two different NILM case studies. The first one uses Power features derived from the BLUED current and voltage measurements and the second one is based on real-world current and voltage measurements acquired using our own acquisition system. The results show a significant improvement in terms of performance and accuracy of the multivariate approach over the classical scalar one when using the features selected by the proposed algorithm.