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Power Efficient Battery charger by Using Constant Current/Constant Voltage Controller

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Circuits and Systems 2012年第2期3卷 180-186页

作者： Falah Al Hassan Department of Electrical and Electronics Engineering Eastern Mediterranean University Famagusta North Cyprus

The Battery charger Specification presents solution for rechargeable batteries used in portable electronic equipment such as laptop computer systems, cellular telephones and video cameras and the demands for low cost battery chargers are rising these days without give attention for the performance. The goal of the paper was combining high efficiency and versatility with low-cost design and this paper includes the design of the snubber cell, and the components of the current/voltage control charge method. This charger applies a relatively constant current and constant voltage to the battery indefinitely regardless of the AC input rang voltage all the equations described in this paper. The design of prototype converter is verified through an experimental result.

关键词： Battery charger Flyback Constant Currant Constant Voltage Snubber Efficiency

Impact Analysis of Off-board charger to Power Quality

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Energy and Power Engineering 2013年第4期5卷 1337-1343页

作者： Yubo Fan Chunlin Guo Wenbo Qi Zheci Tang State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing China

In this paper, we tested the entire charging process of a single off-board charger in one charging station in Beijing. Among the testing data, we chose the typical power quality parameters and compared them with national standard. Then we drew conclusions as follows: 1) Electric vehicle battery is the capacitive load. It can export reactive power when charging. 2) In the charging process of the off-board charger, indicators of voltage deviation, frequency deviation, power factor, and voltage distortion rate are qualified. 3) Off-board charger produces odd harmonics in the charging process, and with increasing harmonic order, harmonic content reduces. There is a certain amount of high-order harmonic in off-board charger, mainly distributing around 6650 kHz. 4) Generated harmonics of the actual device, the harmonic is mainly reflected in the current, voltage, only a small distortion.

关键词： Electric Vehicles charger Power Quality

Super charger原理及其应用分析

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中国无线电 2005年第8期 36-39页

作者：颜昭榕广东移动通信有限责任公司广州分公司

第三代移动通信(3G)WCDMA标准中给出了Supercharger的概念和具体实现方法。Supercharger概念的提出将改变目前网络中VLR临时存储数据的理念,强调用户数据的长时间保留以减少频繁增加和删除数据所带来的开销。本文将对其进行详细介绍,并... 详细信息

第三代移动通信(3G)WCDMA标准中给出了Supercharger的概念和具体实现方法。Supercharger概念的提出将改变目前网络中VLR临时存储数据的理念,强调用户数据的长时间保留以减少频繁增加和删除数据所带来的开销。本文将对其进行详细介绍,并通过实例分析来深入剖析优劣势和应用前景。

关键词：第三代移动通信(3G) WCDMA Super charger VLR 应用 WCDMA标准第三代移动通信原理存储数据

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charger车采用CNG技术

玻璃钢 1999年第2期 23-23页

复合材料基压缩天然气(CNG)储罐体系正促使气动力客车走向更接近现实一步。此储罐体系在Daimler Chrysler的新型Dodge charger R/T初步设计车中显示优势,此车超级装载,CNG4.7升V--8引擎。此车的排放物足够低于加州 Air Resources Board ... 详细信息

复合材料基压缩天然气(CNG)储罐体系正促使气动力客车走向更接近现实一步。此储罐体系在Daimler Chrysler的新型Dodge charger R/T初步设计车中显示优势,此车超级装载,CNG4.7升V--8引擎。此车的排放物足够低于加州 Air Resources Board ULEV标准的要求并还会降低二氧化碳达25%。此体系包括纤维缠绕压力罐,储240巴天然气,在一增强塑料壳内用吸震泡沫来密封。此罐有不透气HDPE里衬,用混合高强碳和玻璃纤维浸以环氧树脂缠绕。

关键词： CNG 储罐引擎 charger 吸震压缩天然气

SiGe半导体公司新推Range charger器件

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半导体信息 2005年第2期 17-17页

作者：孙再吉

据***报道,SiGe半导体公司新推Range charger器件,主要面向802.11 b/g无线局域网系统。此类器件包含RF前端模块和功率放大器两个内容。 RF前端模块在一个微型芯片级封装内集成了收发器和天线所需的所有RF 前端电路,模块采用超薄型18针4... 详细信息

据***报道,SiGe半导体公司新推Range charger器件,主要面向802.11 b/g无线局域网系统。此类器件包含RF前端模块和功率放大器两个内容。 RF前端模块在一个微型芯片级封装内集成了收发器和天线所需的所有RF 前端电路,模块采用超薄型18针4 mm×4.5 mm×0.6 mm尺寸的封装,包括了一个高性能功率放大器、功率检测器、数字功能控制、T/R开关、谐波滤波器以及50 W输入和输出匹配阻抗。在802.11下具有+16 dBm输出功率,在802.11 b下的输出功率为+19 dBm。

关键词： SiGe Range charger 前端模块芯片级封装收发器输出功率局域网系统超薄型谐波滤波器功能控制

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首台西门子charger机车亮相

国外铁道车辆 2018年第1期55卷 5-5页

作者：贺文锦

2016年3月25日,美国联邦铁路主管Sarah Feinberg女士在访问西门子公司萨克拉门托工厂期间,为首台西门子美国charger客运机车揭幕。charger机车为4轴交流牵引机车,是首台装有满足美国环保局Tier4排放标准的Cummins公司3.28MW QSK 95柴油... 详细信息

2016年3月25日,美国联邦铁路主管Sarah Feinberg女士在访问西门子公司萨克拉门托工厂期间,为首台西门子美国charger客运机车揭幕。charger机车为4轴交流牵引机车,是首台装有满足美国环保局Tier4排放标准的Cummins公司3.28MW QSK 95柴油机的机车。

关键词：西门子 charger

Traceability Technology of DC Electric Energy Metering for On-Site Inspection of chargers

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Energy Engineering 2023年第3期120卷 715-727页

作者： Hua Li Dezhi Xiong Zhi Wang Hunan Institute of Metrology and Inspection Changsha410018China State Grid Hunan Electric Power Corporation Limited Changsha410001China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha410001China

The on-site inspection of high-power DC chargers results in new DC high-current measurement and DC energy traceability system *** paper studies the traceability technology of electric energy value for automotive high-power DC chargers,including:(1)the traceability method of the built-in DC energy meter and shunt of the charger;(2)precision DC high current and small precision DC voltage output and measurement *** paper designs a 0.1 mA∼600 A DC high current measurement system and proposes a 0.005 level DC powermeasurement traceability *** uncertainty evaluation experiment of theDC powermeasurement calibration system and the high-power DC charger’s on-site calibration experiment results verify the method’s effectiveness and feasibility in this *** experimental results show that the combined standard uncertainty of the DC power metering verification system can be 0.0451%.

关键词： DC electric energy measurement charger traceability calibration

Predictive control of plug-in electric vehicle chargers with photovoltaic integration

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Journal of Modern Power Systems and Clean Energy 2018年第6期6卷 1264-1276页

作者： Adrian Soon Theam TAN Dahaman ISHAK Rosmiwati MOHD-MOKHTAR Sze Sing LEE Nik Rumzi Nik IDRIS School of Electrical and Electronic Engineering Universiti Sains Malaysia University of Southampton Malaysia Campus UTM-PROTON Future Drive Laboratory Universiti Teknologi Malaysia

This paper presents a model predictive control(MPC) for off-board plug-in electric vehicle(PEV)chargers with photovoltaic(PV) integration using two-level four-leg inverter topology. The PEV charger is controlled by a unified controller that incorporates direct power and current MPC to dynamically control decoupled active-reactive power flow in a smart grid environment as well as to control PEV battery charging and discharging reliably. PV power generation with maximum power tracking is seamlessly integrated with the power flow control to provide additional power generation. Fast dynamic response and good steady-state performance under all power flow modes and various environmental conditions are evaluated and analyzed. From the results obtained, the charger demonstrates less than 1.5% total harmonic distortion as well as low active and reactive power ripple of less than 7% and 8% respectively on the grid for all power flow modes. The PEV battery also experiences a low charging and discharging current ripple of less than 2.5%. Therefore,the results indicate the successful implementation of the proposed charger and its control for PV integrated offboard PEV chargers.

关键词： Plug-in electric vehicles Electric vehicle charger Photovoltaic generation Model predictive control

Comparison among chargers of Electric Vehicle Based on Different Control Strategies

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Energy and Power Engineering 2013年第4期5卷 1398-1403页

作者： Pengxin Hou Chunlin Guo Yubo Fan State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing China

The charger of electric vehicle is a power electronic device which consists of rectifying devices and DC-DC converters. This nonlinear diode rectifier circuit has low power factor and high harmonic content. In order to improve power factor and reduce the harmonic distortion rate of the AC side current, single-phase non-controlled rectifier charger needs to install the active power factor correction device. A piece of power system analysis software which is called PSCAD is used in modeling of an EV charger which contains Boost-APFC. By means of simulation and analysis, differences of APFC characteristics between the hysteresis current control mode and average current control mode which has an influence on the power grid are compared. The consequence of simulation shows that the two control strategies achieve power factor correction and harmonic reduction requirements;Boost type power conversion circuit employs the average current control mode is better, which has following features: relatively faster settling time of the output voltage, relatively smaller overshoot, lower current harmonic distortion rate on AC side, lower switching frequency and better control effect.

关键词： Electric Vehicle charger APFC Control Strategy Power Factor Harmonic