一种车用质子交换膜燃料电池管理系统设计

基于Microchip公司的高性能数字信号控制器dsPIC30F6014A,完成了一种车用质子交换膜燃料电池管理系统的单膜电压检测单元CVU和电堆主控单元FCU的软硬件设计,开发了基于C语言的膜电极电压采集程序和管理系统主控程序,并且用样机验证了设计。     

基于RT-lab的电池硬件在环模拟器研究

随着混合动力汽车和纯电动汽车的发展,能量存储装置对汽车的安全性和可靠性的影响越来越受到重视。电池管理系统(BMS)是提高车辆安全,延长电池寿命,减少能量损耗的关键。如何对BMS的软件和硬件进行开发和验证变得非常重要。使用实际的电池进行相关的研究,会带来极大的不便之处,如实验耗时长、可重复性差、故障注入危险以及难以复现等;而单纯的软件模型不具备实时性也没有硬件的连接,可验证的功能非常有限。为了克服这些困难,使用RT-lab平台针对BMS构建了一个硬件在环测试平台,具有很好的可调性、实时性、灵活性和普适性,可以全面地对BMS进行测试,节省成本和时间。     

充电设施对电池管理系统保护需求响应评估

充电状态下的电动汽车动力电池或电池管理系统(BMS)出现异常时,充电设施应能可靠响应,以确保充电安全。文中分析了BMS保护需求,定义了充电设施对BMS保护需求的响应率;参考现有标准及工程实际,建立了响应率指标体系,涵盖了动力电池故障及BMS故障等评价指标。采用层次分析法对各项指标权重进行了分析计算;最后,结合实际工程数据,对两种充电设施的响应率进行评估,基于单项响应率和综合响应率等指标,找出充电设施对动力电池及BMS故障响应能力的薄弱环节,并根据评估结果提出提高响应率的措施。结果表明,响应率指标体系可量化评估充电设施对BMS保护需求的响应能力。     

Design and Management of Building＇s Resources

The developed modem control systems and buildings management resource systems would be effective if they are based on previously established optimal conditions during the building design. This is one of the key issues for a responsible architecture. The focus of this paper is on sustainable design methods and techniques for saving resources and their management throughout the building lifecycle. The main subject of the present article is the characteristics of these methods and their fundamental role in sustainable resource management during the building operation. The results which are based on conducted case studies of European and international practice in the construction of sustainable buildings are implemented here. Key features of a comprehensive approach for design and construction are outlined via comparative analysis, as well as various systems for the evaluation of sustainability for already constructed buildings. The mostly used criteria and indicators for sustainability are systematized, including those related to resource consumption. By analyzing a specific example, the role of sustainable design methods is justified as an important prerequisite for effective management of building resources in the process building maintenance. According to the conducted studies, during the longest life cycle period of a building, by implementation of control systems and resource management of building, the costs are successfully optimized. Specific directions that prove the effectiveness of such systems are systematized in the paper. Innovative approaches, complex methods and measures for design and management of buildings resources are presented as results of this study.     

AGV车用锂离子电池管理系统设计

随着动力锂离子电池在电动汽车上的运用技术的发展,锂离子电池作为自动引导运输车的动力电池开始受到人们的关注。针对自动引导运输车锂离子电池使用的安全性和效率问题,提出了一种基于恒流/恒压充电均衡的电池管理系统(BMS)方案。实验表明,该系统荷电状态(SOC)估计精度达到5%,单体电压采样精度2 m V,均衡电流达10 A。在最大充电电流300 A和放电电流150 A条件下实现了自动导引运输车动力锂离子电池安全高效运行。     

A roadmap towards intelligent net zero- and positive-energy buildings

Buildings nowadays are increasingly expected to meet higher and more complex performance requirements: they should be sustainable; use zero-net energy; foster a healthy and comfortable environment for the occupants; be grid-friendly, yet economical to build and maintain. The essential ingredients for the successful development and operation of net zero- and positive-energy buildings (NZEB/PEB) are: thermal simulation models, that are accurate representations of the building and its subsystems; sensors, actuators, and user interfaces to facilitate communication between the physical and simulation layers; and finally, integrated control and optimization tools of sufficient generality that using the sensor inputs and the thermal models can take intelligent decisions, in almost real-time, regarding the operation of the building and its subsystems. To this end the aim of the present paper is to present a review on the technological developments in each of the essential ingredients that may support the future integration of successful NZEB/PEB, i.e. accurate simulation models, sensors and actuators and last but not least the building optimization and control. The integration of the user is an integral part in the dynamic behavior of the system, and this role has to be taken into account. Future prospects and research trends are discussed.     

BMS在数据中心冷冻站系统中的应用

随着国家"十二五"产业规划中经济结构转型政策的出台,云计算作为一种新兴产业得到国家的大力支持。最近几年,其发展速度异常迅猛。数据中心作为云计算的基础设施,也相应得到了快速发展。随着数据中心的规模越来越大,服务器的发热密度越来越高,能源消耗的问题日益突出。针对目前数据中心工程中被大量应用的冷冻水系统,详细描述建筑管理系统(BMS)在系统设计时应着重考虑的要点,并详细分析其控制逻辑,使得一套完整的BMS控制方案可在系统运行时发挥其巨大的作用。     

Regulatory framework and business models for charging plug-in electric vehicles: Infrastructure,agents, and commercial relationships

Electric vehicles (EVs) present efficiency and environmental advantages over conventional transportation. It is expected that in the next decade this technology will progressively penetrate the market. The integration of plug-in electric vehicles in electric power systems poses new challenges in terms of regulation and business models. This paper proposes a conceptual regulatory framework for charging EVs. Two new electricity market agents, the EV charging manager and the EV aggregator, in charge of developing charging infrastructure and providing charging services are introduced. According to that, several charging modes such as EV home charging, public charging on streets, and dedicated charging stations are formulated. Involved market agents and their commercial relationships are analysed in detail. The paper elaborates the opportunities to formulate more sophisticated business models for vehicle-to-grid applications under which the storage capability of EV batteries is used for providing peak power or frequency regulation to support the power system operation. Finally penetration phase dependent policy and regulatory recommendations are given concerning time-of-use pricing, smart meter deployment, stable and simple regulation for reselling energy on private property, roll-out of public charging infrastructure as well as reviewing of grid codes and operational system procedures for interactions between network operators and vehicle aggregators.     

电动汽车BMS测试系统的数据通信

随着新能源汽车产业的发展,车载动力电池管理系统（BMS）的可靠性是直接影响电动汽车可靠运营的关键因素之一。为此开发一套BMS测试系统,实现对车载主从分布式BMS信息的监控及系统测试功能,为BMS的测试及故障诊断提供便捷的途径。此测试系统是上位机与BMS通过CAN通信进行信息交互,达到测试及监控的目的。本文重点描述BMS测试系统的上位机与BMS控制器CAN数据通信的实现过程及方法。     

字典序下BMS算法终止条件的设计

编码理论中的BMS算法具有良好的解码效率与纠错能力,目前的研究通常集中于分次项序下的情形。通过分析字典序与分次项序的本质特征,利用与BMS算法密切相关的Gr?bner基的消去性质,设计出字典序下BMS算法的终止条件,并给出了基于该条件的易于实现的具体算法描述。实验结果表明,该终止条件切实有效,与算法中的原始理论终止条件完全吻合。