The Experts below are selected from a list of 18492 Experts worldwide ranked by ideXlab platform
Adel M. Sharaf - One of the best experts on this subject based on the ideXlab platform.
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A Novel Efficient Low Impact V2H Vehicle-to-House Battery Charging Scheme
International Journal of Tomography and Simulation, 2013Co-Authors: E. Elbakush, Adel M. SharafAbstract:This paper presents a Novel V2H Battery Charging Scheme using FACTS based low impact Battery Charging scheme, to improve the power quality, reduce total harmonic distortion, decrease AC and DC inrush currents, and provide device voltage stabilization. The FACTS is fully stabilized using a hybrid Green Power Filter Compensator (GPFC), that ensures a fully stabilized Common-DC Bus voltage with reduced inrush current conditions. In the same time, The novel FACTS device is a AC-DC coupling neutral point filter compensation (NP-SFC) which is connected between AC and DC sides of the converter and increases the level of power. Green pure Filter Compensation and neutral point filter compensation (NP-SFC) Scheme for V2H Battery Charging Stations with a novel multi regulators multi loop error driven control strategy to ensure fast Charging, minimal impact on host electric grid and efficient utilization of grid-connected Battery Charging scheme with effective AC-DC decoupling and stabilization of the DC Common Bus Voltage. The self regulating Battery Charging multi-regulator control scheme has been fully validated using. The Battery Charging FACTS Based V2H Station is controlled by a Multi-loop error driven regulators to ensure near unity power factor operation, reduced harmonic distortion and decoupled AC-DC Grid Operation. The Battery charger has a hybrid Voltage-Current Regulation. The proposed basic and NP-SFC FILTER compensated V2H-Battery Charging schemes are effective in ensuring minimal decoupled AC-DC operation and Efficient low impact on the Electric Grid.
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A FACTS based hybrid filter compensator (HFC) for H2V Battery Charging schemes
International Journal of Renewable Energy Research, 2013Co-Authors: E. Elbakush, Adel M. SharafAbstract:The paper presents a robust low impact FACTS based filter compensation scheme for V2H Battery chargers to, improve the power quality, reduce total harmonic distortion, decrease AC and DC inrush currents, and ensure effective Ac and DC Common bus voltage stabilization. The Neutral point Facts Filter Compensation Schemer (NP-HFC) ensures effective decoupling of the AC-DC Sides and minimal impact of inrush currents during fast Charging modes. In the same time, the novel FACTS device ensures efficient energy utilzation and improved power factor at the common AC bus. A dynamic multi regulation multi-loop error driven control strategy is developed to ensure fast Charging, minimal impact on host electric grid and efficient utilization of grid-connected Battery Charging scheme with effective AC-DC decoupling and stabilization of the DC Common Bus Voltage. The self regulating Battery Charging multi- regulator control scheme has been fully validated using Matlab-Simulink Software Environment. The FACTS-based Battery Charging V2H unit is controlled using modified multi-zonal error driven control strategies for fast dynamic action and minimal stead state error to ensure improved power factor operation, reduced Total Harmonic Distortion and decoupled AC- DC Grid Operation. The Battery charger has a hybrid selected Voltage-Current Regulation strategy.
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Self-regulating particle swarm optimised controller for (photovoltaic–fuel cell) Battery Charging of hybrid electric vehicles
IET Electrical Systems in Transportation, 2012Co-Authors: A.a.a. Elgammal, Adel M. SharafAbstract:This study presents the use of hybrid photovoltaic-fuel cell (PV-FC) renewable energy scheme for vehicle-to-grid (V2G) Battery-Charging stations. The hybrid PV-FC DC interface scheme is dynamically controlled using a self-regulating tri-loop controller based on multi-objective particle swarm optimisation. The proposed utilisation scheme ensures efficient DC source energy utilisation from the hybrid PV-FC DC with minimal DC current inrush conditions and a fully stabilised DC bus voltage. The multi-loop Battery-Charging regulator allows for hybrid (voltage, current and power) Charging modes for efficient, fast Charging and DC energy efficient utilisation. The proposed hybrid renewable green energy PV-FC Battery-Charging scheme is fully validated by simulation and laboratory prototype testing.
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Power quality enhancement using FACTS neutral point filter compensator for EV-Battery Charging schemes
Proceedings - 2011 International Conference on Energy Automation and Signal ICEAS - 2011, 2011Co-Authors: Adel M. Sharaf, Behnam KhakiAbstract:The paper presents a novel FACTS device developed by the First Author to improve the power quality, reduce total harmonic distortion, decrease AC and DC inrush currents, and provide device voltage stabilization. The novel FACTS device is a AC-DC coupling neutral point filter compensation (NP-FC) which is connected between AC and DC sides of the converter and increases the level of power. A DC-DC buck-boost chopper is also utilized in DC side of the converter to control Battery Charging and decrease the ripples of the DC side voltage and current. A multi-regulator multi-loop error driven Modified-PID controller is used to control on-off pulsing sequence for NP-FC FACTS device and DC-DC buck-boost chopper. The proposed scheme is validated for V2H Battery Charging scheme.
Xuefeng Wang - One of the best experts on this subject based on the ideXlab platform.
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Resonant Converter for Battery Charging Applications With CC/CV Output Profiles
IEEE Access, 2020Co-Authors: Shuchang Wang, Xuefeng WangAbstract:In this paper, a novel resonant circuit topology is proposed for Battery Charging applications. Compared with traditional implemented circuits, the proposed topology can provide constant current (CC) and constant voltage (CV) Charging profiles for different Battery states automatically. Specially, zero-voltage-switching (ZVS) turned on of switching devices can be realized at fixed operating frequency for different Charging levels, which benefits the transferring efficiency and reduces the voltage stress of the switches. In addition, simple design methodology can be derived to improve system's practicality and reliability, avoiding complex control strategy. Experimental results obtained from a 200 W prototype system show good agreement with calculated results, validating that the proposed topology can be used for Battery Charging systems.
Siu-chung Wong - One of the best experts on this subject based on the ideXlab platform.
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An Inductive-Power-Transfer Converter With High Efficiency Throughout Battery-Charging Process
IEEE Transactions on Power Electronics, 2019Co-Authors: Zhicong Huang, Siu-chung WongAbstract:An inductive power transfer (IPT) converter usually has an optimum efficiency only at a matched load. Because of wide load range variation during Battery Charging, it is challenging for an IPT converter to achieve the required output and maintain high efficiency throughout the Charging process. In this paper, a series–series compensated IPT converter with an active rectifier is analyzed and implemented for Battery Charging. Appropriate operations are employed for constant-current Charging and constant-voltage (CV) Charging. A novel operation approach is proposed to achieve constant output voltage and to ensure load impedance matching during CV Charging without the help of an extra dc–dc converter, which incurs loss. Both a frequency modulated primary inverter and a phase-angle modulated secondary active rectifier can achieve soft switching. High efficiency can be maintained during the whole Battery-Charging profile.
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Hybrid IPT Topologies With Constant Current or Constant Voltage Output for Battery Charging Applications
IEEE Transactions on Power Electronics, 2015Co-Authors: Xiaohui Qu, Siu-chung Wong, Wu ChenAbstract:The inductive power transfer (IPT) technique in Battery Charging applications has many advantages compared to conventional plug-in systems. Due to the dependencies on transformer characteristics, loading profile, and operating frequency of an IPT system, it is not a trivial design task to provide the Battery the required constant Charging current (CC) or constant Battery Charging voltage (CV) efficiently under the condition of a wide load range possibly defined by the Charging profile. This paper analyzes four basic IPT circuits with series-series (SS), series-parallel (SP), parallel-series (PS), and parallel-parallel (PP) compensations systematically to identify conditions for realizing load-independent output current or voltage, as well as resistive input impedance. Specifically, one load-independent current output circuit and one load-independent voltage output circuit having the same transformer, compensating capacitors, and operating frequency can be readily combined into a hybrid topology with fewest additional switches to facilitate the transition from CC to CV. Finally, hybrid topologies using either SS and PS compensation or SP and PP compensation are proposed for Battery Charging. Fixed-frequency duty cycle control can be easily implemented for the converters.
Vahan Gevorgian - One of the best experts on this subject based on the ideXlab platform.
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Development and Testing of Commercial Prototype Wind-Electric Battery Charging Station
2000Co-Authors: Vahan Gevorgian, David Corbus, Greg KernAbstract:The technical aspects of Charging 12-volt (V) batteries with a small permanent magnet wind-turbine generator suggested that a special Battery-Charging station be developed. Scientists at the National Renewable Energy Laboratory (NREL) conducted research on several possible configurations of wind-electric Battery-Charging stations. Based on preliminary modeling and test results, the optimal system for this application was the one with individual charge controllers. This paper presents the development efforts and test results of a commercial prototype wind-electric Battery-Charging station designed and manufactured by Ascension Technology, a Division of Applied Power Corporation (APC). The system, which is powered by a 3-kilowatt (kW) wind turbine, was tested at the National Wind Technology Center (NWTC). The paper discusses control strategies to improve system performance, and includes recommendations for system integrators based on the testing experience accumulated at the NWTC.
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Modeling, testing and economic analysis of a wind-electric Battery Charging station
1998Co-Authors: Vahan Gevorgian, David Corbus, S. Drouilhet, Ralph Holz, K.e. ThomasAbstract:Battery Charging systems are very important in many developing countries where rural families cannot afford a solar-Battery home system or other electricity options, but they can afford to own a Battery (in some cases more than one Battery) and can pay for it to be charged on a regular basis. Because the typical households that use batteries are located far from the grid, small wind Battery Charging stations can be a cost-competitive options for Charging batteries. However, the technical aspects of Charging numerous 12-volt batteries on one DC bus with a small permanent magnet alternator wind turbine suggest that a special Battery Charging station be developed. NREL conducted research on two different types of wind Battery Charging stations: a system that uses one charge controller for the entire DC bus and charges batteries in parallel strings of four batteries each, and one that uses individual charge controllers for each Battery. The authors present test results for both system configurations. In addition, modeling results of steady-state time series simulations of both systems are compared. Although the system with the single charge controller for the entire bus is less expensive, it results in less efficient Battery Charging. The authors also include inmore » the paper a discussion of control strategies to improve system performance and an economic comparison of the two alternative system architectures.« less
Shuchang Wang - One of the best experts on this subject based on the ideXlab platform.
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Resonant Converter for Battery Charging Applications With CC/CV Output Profiles
IEEE Access, 2020Co-Authors: Shuchang Wang, Xuefeng WangAbstract:In this paper, a novel resonant circuit topology is proposed for Battery Charging applications. Compared with traditional implemented circuits, the proposed topology can provide constant current (CC) and constant voltage (CV) Charging profiles for different Battery states automatically. Specially, zero-voltage-switching (ZVS) turned on of switching devices can be realized at fixed operating frequency for different Charging levels, which benefits the transferring efficiency and reduces the voltage stress of the switches. In addition, simple design methodology can be derived to improve system's practicality and reliability, avoiding complex control strategy. Experimental results obtained from a 200 W prototype system show good agreement with calculated results, validating that the proposed topology can be used for Battery Charging systems.
