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Backup Battery
The Experts below are selected from a list of 597 Experts worldwide ranked by ideXlab platform
Faouzi Ben Ammar – 1st expert on this subject based on the ideXlab platform
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improved performance and energy management strategy for proton exchange membrane fuel cell Backup Battery in power electronic systems
International Journal of Hydrogen Energy, 2017Co-Authors: Kais Brik, Faouzi Ben AmmarAbstract:Abstract The objective of this paper is to propose an approach to analyze the reliability of proton exchange membrane fuel cell and Backup Battery in the power electronic systems by improving the strategy of energy management. This approach is based on the research of critical causes generating the degradation of power sources in the power electronic application and their undesirable effect. The analysis of potential failure modes that affect the fuel cell and the auxiliary source is developed by using analysis tools such as the Failure Mode and Effects Analysis (FMEA). The undesirable factors have to be taken into account in designing the topology of power converter in order to improve the performance of a fuel cell power system. In this context the authors propose to integrate a multiphase converter to minimize the current ripple and ameliorate the dynamic response of exchange membrane fuel cell. The improvement of Battery lifetime is also ensured by the incorporation of an appropriate charge cycle that promises the full state of charge and avoids the overcharge.
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Improved performance and energy management strategy for proton exchange membrane fuel cell/Backup Battery in power electronic systems
International Journal of Hydrogen Energy, 2017Co-Authors: Kais Brik, Faouzi Ben AmmarAbstract:Abstract The objective of this paper is to propose an approach to analyze the reliability of proton exchange membrane fuel cell and Backup Battery in the power electronic systems by improving the strategy of energy management. This approach is based on the research of critical causes generating the degradation of power sources in the power electronic application and their undesirable effect. The analysis of potential failure modes that affect the fuel cell and the auxiliary source is developed by using analysis tools such as the Failure Mode and Effects Analysis (FMEA). The undesirable factors have to be taken into account in designing the topology of power converter in order to improve the performance of a fuel cell power system. In this context the authors propose to integrate a multiphase converter to minimize the current ripple and ameliorate the dynamic response of exchange membrane fuel cell. The improvement of Battery lifetime is also ensured by the incorporation of an appropriate charge cycle that promises the full state of charge and avoids the overcharge.
Jorge R. Fernandes – 2nd expert on this subject based on the ideXlab platform
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Energy harvesting circuit using integrated transformer
2011 IEEE International Symposium of Circuits and Systems (ISCAS), 2011Co-Authors: Hugo B. Gonçalves, Miguel A. Martins, Jorge R. FernandesAbstract:In this work we present a prototype circuit to harvest energy from radio frequency (RF) electromagnetic waves based on an integrated transformer together with a half-wave multi-stage rectifier. This circuit is designed to be impedance matched to a standard 50 Ω antenna and to operate at 2.4 GHz with input power as low as -15 dBm. The circuit presented here shows that it is possible to harvest low power input signals and therefore it can be used to supply alone a circuit, or to work as a Backup Battery charger. The circuit was designed and simulated in a standard 130 nm CMOS process.
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ISCAS – Energy harvesting circuit using integrated transformer
2011 IEEE International Symposium of Circuits and Systems (ISCAS), 2011Co-Authors: Hugo Goncalves, Miguel A. Martins, Jorge R. FernandesAbstract:In this work we present a prototype circuit to harvest energy from radio frequency (RF) electromagnetic waves based on an integrated transformer together with a half-wave multi-stage rectifier. This circuit is designed to be impedance matched to a standard 50 Ω antenna and to operate at 2.4 GHz with input power as low as −15 dBm. The circuit presented here shows that it is possible to harvest low power input signals and therefore it can be used to supply alone a circuit, or to work as a Backup Battery charger. The circuit was designed and simulated in a standard 130 nm CMOS process.
M.d. Manjrekar – 3rd expert on this subject based on the ideXlab platform
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A reconfigurable uninterruptible power supply system for multiple power quality applications
Twentieth Annual IEEE Applied Power Electronics Conference and Exposition 2005. APEC 2005., 2005Co-Authors: M.d. ManjrekarAbstract:A novel topology of an uninterruptible power supply (UPS) system is presented in this paper. The proposed UPS system presents the advantages of high power conversion efficiency as well as active front-end filtering which ensures unity input power factor (reactive power compensation) and low input total harmonic distortion (harmonic power compensation) in the voltages and currents. In addition, this UPS possess dynamic voltage sag compensation capabilities, hence eliminates any series transformer or boost converter which is normally used in conjunction with traditional stand-alone UPS systems. Meanwhile, during the Backup (Battery) mode of operation, this UPS has the capability of providing grid isolation without any backward power feed into the faulted utility gird, thus eliminates the needs of circuit breaker or static switch. In addition, it has the desirable characteristics of making seamless transition from normal to Backup mode during power failures and vice versa, as well as providing controlled voltage charging at the dc bus link. The proposed UPS is also impervious to load variations, which enables it to operate under nonlinear load condition. Lastly, the circuit structure is simple, light weight, and can be implemented at a low cost using the standard commercial available components. A complete set of simulation as well as experimental results based on a 1 kW test prototype of the proposed UPS are presented here to demonstrate its viability and efficacy.