The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Y.s. Wong - One of the best experts on this subject based on the ideXlab platform.
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Temperature compensation algorithm for interrupted charge control regime for a VRLA Battery in standby applications
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W. H. WölfleAbstract:The valve-regulated lead- acid Battery is the Main Battery type employed in standby services within a range of recommended operating temperatures. The float charge regime is normally used to Maintain the charge in these batteries, it has limitations that can damage the Battery and shorten its life. An interrupted charge control (ICC) regime is developed to prolong the service life of the batteries in standby applications. Battery manufacturers provide temperature compensation schemes for float charge regimes however no such compensation exists for the ICC regime. This paper introduces a temperature compensation algorithm for the ICC regime, which is necessary to prevent overcharging and undercharging in normal operations.
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Charge regimes for valve-regulated lead-acid batteries: Performance overview inclusive of temperature compensation
Journal of Power Sources, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W.h. WolfleAbstract:The Main Battery type employed in standby applications is the valve-regulated lead-acid (VRLA) Battery. Float charging is normally used to Maintain the Battery in its fully charged state, however, float charging has limitations that can damage the Battery and shorten its life. New charge regimes have evolved in recent years to tackle the intrinsic problems of float charging. The intermittent charge (IC) regime and the interrupted charge control (ICC) regime have been developed to prolong the service life of the Battery in standby applications. The Battery is normally Maintained in the standby mode for a long period of time and there are infrequent discharge tests to verify the efficacy of the Battery. Hence, the service life of the Battery is highly correlated to its charge regime. This paper reviews the charge regimes for VRLA batteries, and assesses their charging performance and their impact on the service life of the Battery. Recognising that temperature plays a significant role in Battery operation, temperature compensation schemes are described for different charge regimes.
W. H. Wölfle - One of the best experts on this subject based on the ideXlab platform.
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Temperature compensation algorithm for interrupted charge control regime for a VRLA Battery in standby applications
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W. H. WölfleAbstract:The valve-regulated lead- acid Battery is the Main Battery type employed in standby services within a range of recommended operating temperatures. The float charge regime is normally used to Maintain the charge in these batteries, it has limitations that can damage the Battery and shorten its life. An interrupted charge control (ICC) regime is developed to prolong the service life of the batteries in standby applications. Battery manufacturers provide temperature compensation schemes for float charge regimes however no such compensation exists for the ICC regime. This paper introduces a temperature compensation algorithm for the ICC regime, which is necessary to prevent overcharging and undercharging in normal operations.
William Gerard Hurley - One of the best experts on this subject based on the ideXlab platform.
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Temperature compensation algorithm for interrupted charge control regime for a VRLA Battery in standby applications
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W. H. WölfleAbstract:The valve-regulated lead- acid Battery is the Main Battery type employed in standby services within a range of recommended operating temperatures. The float charge regime is normally used to Maintain the charge in these batteries, it has limitations that can damage the Battery and shorten its life. An interrupted charge control (ICC) regime is developed to prolong the service life of the batteries in standby applications. Battery manufacturers provide temperature compensation schemes for float charge regimes however no such compensation exists for the ICC regime. This paper introduces a temperature compensation algorithm for the ICC regime, which is necessary to prevent overcharging and undercharging in normal operations.
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Charge regimes for valve-regulated lead-acid batteries: Performance overview inclusive of temperature compensation
Journal of Power Sources, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W.h. WolfleAbstract:The Main Battery type employed in standby applications is the valve-regulated lead-acid (VRLA) Battery. Float charging is normally used to Maintain the Battery in its fully charged state, however, float charging has limitations that can damage the Battery and shorten its life. New charge regimes have evolved in recent years to tackle the intrinsic problems of float charging. The intermittent charge (IC) regime and the interrupted charge control (ICC) regime have been developed to prolong the service life of the Battery in standby applications. The Battery is normally Maintained in the standby mode for a long period of time and there are infrequent discharge tests to verify the efficacy of the Battery. Hence, the service life of the Battery is highly correlated to its charge regime. This paper reviews the charge regimes for VRLA batteries, and assesses their charging performance and their impact on the service life of the Battery. Recognising that temperature plays a significant role in Battery operation, temperature compensation schemes are described for different charge regimes.
Kurani Kurani - One of the best experts on this subject based on the ideXlab platform.
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Batteries for PHEVs: Comparing Goals and the State of Technology
Electric and Hybrid Vehicles, 2010Co-Authors: John Axsen, Andrew Burke, Kurani KuraniAbstract:This chapter focuses on the state of development of batteries for plug-in hybrid electric vehicles (PHEVs). The Battery plays a crucial role in the PHEV architecture by storing energy from the electrical grid and from the gasoline engine, through a generator, as well as passing energy back and forth with the electric motor to maximize efficiency. The commercial success of the PHEV depends on the development of appropriate Battery technologies and there is much uncertainty about the requirements of a Battery required for a successful PHEV and where the present Battery technologies stand in meeting such requirements. The basic design concepts of PHEVs are discussed and the three sets of influential technical Battery goals are compared. The inherent trade-offs in PHEV Battery design are also explained and the current state of several Battery chemistries along with the comparison of their abilities to meet PHEV goals and their potential trajectories for further improvement are also presented. PHEV Battery goals may vary according to differing assumptions of PHEV design, performance, use patterns, and consumer demand and the Battery development is still constrained by inherent trade-offs among five Main Battery attributes such as power, energy, longevity, safety, and cost. The findings suggest that lithium–ion (Li–ion) Battery designs are better suited to meet the demands of more aggressive PHEV goals than nickel-metal hydride (NiMH) batteries, which are currently used for HEVs. The flexible nature of Li–ion technology, as well as concerns over safety, has also prompted several alternate paths of continued technological development.
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Batteries for Plug-in Hybrid Electric Vehicles (PHEVs): Goals and the State of Technology circa 2008 - eScholarship
2008Co-Authors: John Axsen, Andrew Burke, Kurani KuraniAbstract:This report discusses the development of advanced batteries for plug-in hybrid electric vehicle (PHEV) applications. We discuss the basic design concepts of PHEVs, compare three sets of influential technical goals, and explain the inherent trade-offs in PHEV Battery design. We then discuss the current state of several Battery chemistries, including nickel-metal hydride (NiMH) and lithium-ion (Li-Ion), comparing their abilities to meet PHEV goals, and potential trajectories for further improvement. Four important conclusions are highlighted. First, PHEV Battery “goals” vary according to differing assumptions of PHEV design, performance, use patterns and consumer demand. Second, Battery development is constrained by inherent tradeoffs among five Main Battery attributes: power, energy, longevity, safety and cost. Third, Li-Ion Battery designs are better suited to meet the demands of more aggressive PHEV goals than the NiMH batteries currently used for HEVs. Fourth, the flexible nature of Li-Ion technology, as well as concerns over safety, has prompted several alternate paths of continued technological development. Due to the differences among these development paths, the attributes of one type of Li-Ion Battery cannot necessarily be generalized to other types. This paper is not intended to be a definitive analysis of technologies; instead, it is more of a primer for Battery non-experts, providing the perspective and tools to help understand and critically review research on PHEV batteries.
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Batteries for Plug-in Hybrid Electric Vehicles ( PHEVs ): Goals and the State of Technology circa 2008
Technology, 2008Co-Authors: John Axsen, Andrew Burke, Kurani KuraniAbstract:This report discusses the development of advanced batteries for plug-in hybrid electric vehicle (PHEV) applications. We discuss the basic design concepts of PHEVs, compare three sets of influential technical goals, and explain the inherent trade-offs in PHEV Battery design. We then discuss the current state of several Battery chemistries, including nickel-metal hydride (NiMH) and lithium-ion (Li-Ion), comparing their abilities to meet PHEV goals, and potential trajectories for further improvement. Four important conclusions are highlighted. First, PHEV Battery goals vary according to differing assumptions of PHEV design, performance, use patterns and consumer demand. Second, Battery development is constrained by inherent tradeoffs among five Main Battery attributes: power, energy, longevity, safety and cost. Third, Li-Ion Battery designs are better suited to meet the demands of more aggressive PHEV goals than the NiMH batteries currently used for HEVs. Fourth, the flexible nature of Li-Ion technology, as well as concerns over safety, has prompted several alternate paths of continued technological development. Due to the differences among these development paths, the attributes of one type of Li-Ion Battery cannot necessarily be generalized to other types. This paper is not intended to be a definitive analysis of technologies; instead, it is more of a primer for Battery non-experts, providing the perspective and tools to help understand and critically review research on PHEV batteries.
W.h. Wolfle - One of the best experts on this subject based on the ideXlab platform.
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Charge regimes for valve-regulated lead-acid batteries: Performance overview inclusive of temperature compensation
Journal of Power Sources, 2008Co-Authors: Y.s. Wong, William Gerard Hurley, W.h. WolfleAbstract:The Main Battery type employed in standby applications is the valve-regulated lead-acid (VRLA) Battery. Float charging is normally used to Maintain the Battery in its fully charged state, however, float charging has limitations that can damage the Battery and shorten its life. New charge regimes have evolved in recent years to tackle the intrinsic problems of float charging. The intermittent charge (IC) regime and the interrupted charge control (ICC) regime have been developed to prolong the service life of the Battery in standby applications. The Battery is normally Maintained in the standby mode for a long period of time and there are infrequent discharge tests to verify the efficacy of the Battery. Hence, the service life of the Battery is highly correlated to its charge regime. This paper reviews the charge regimes for VRLA batteries, and assesses their charging performance and their impact on the service life of the Battery. Recognising that temperature plays a significant role in Battery operation, temperature compensation schemes are described for different charge regimes.
