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讨论了分别以重整气氢源、纯氢、甲醇和甲酸为燃料的微型燃料电池和微型固体氧化物燃料电池;对移动电源用微型燃料电池的材料进行了讨论;分析了微型燃料电池制备的技术,如微机电系统技术. 相似文献
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微型直接甲醇燃料电池的研究进展 总被引:1,自引:0,他引:1
直接甲醇燃料电池以其高效、低温、结构简单、易于微型化等优点成为世界燃料电池研究的一个热点。讨论了微型直接甲醇燃料电池的一些关键技术,如电催化剂、质子交换膜以及膜电极组件。介绍了国内外微型直接甲醇燃料电池的研究进展;展望了这类电池的发展前景。 相似文献
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通过分析FC-SAN与IP-SAN的具体网络架构,指出了基于FC和FCoE的SAN网络在架构上的差异,说明了采用FCoE后可简化数据中心的运行和维护的原因.经市场分析认为,FCoE短时间内不会取代FC在企业存储网络中的主导地位. 相似文献
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This paper develops a multiperiod optimization model for an interconnected micro grid with hierarchical control that participates in wholesale energy market to maximize its benefit (i.e. revenues-costs). In addition to the operational constraints of distributed energy resources (DER) including both inter-temporal and non-inter-temporal types, the adequacy and steady-state security constraints of micro grid and its power losses are incorporated in the optimization model. In the presented model, DER are integrated into low voltage grid considering both technical and economical aspects. This integration as a micro grid can participate in wholesale energy market as an entity with dual role including producer and consumer based on the direction of exchanged power. The developed model is evaluated by testing on a micro grid considering different cases and the results are analyzed. 相似文献
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结合高耗能产品市场价格、宏观政策、电价等影响因素,对2005年上半年我区高耗能用电市场进行了深入的分析,从而预测下半年我区高耗能用电市场变化趋势. 相似文献
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面向以微能源网为基本供能单元的区域能源互联网,提出一种基于区域电力市场定价引导不同微能源网之间进行电能交互的协调优化运行策略。从微能源网利益出发,建立供需两侧协同的微能源网日前自治优化调度模型。引入非均衡蛛网模型建立区域电力市场的定价交易模型,并形成市场价格调节与微能源网自治优化的双层交互结构。双层交互至稳定状态后,区域电力市场将实际交易电量向过度供给或过度需求方分配,各微能源网再根据分配结果进行最终的独立自治优化。算例仿真分析表明,所提的协调优化运行方法可以实现非均衡状态下的稳定交易,使得微能源网之间通过高效的电能交互提升各自的经济环保等运行性能。 相似文献
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根据目前我国车载/家用电器行业的发展态势,详细介绍了小功率电机在国民经济中的地位和作用及车载/家用电器中的单片机控制驱动电路和接口电路,分析了小功率电机的应用范围及市场需求量,并指出家用电器用小电机的发展空间。 相似文献
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Besides the ability to change the frequency and amplitude of output voltages a high-performance frequency changer (FC) should produce sinusoidal output voltages and sinusoidal in-phase input currents and allow bidirectional power flow. The Venturini FC meets all these requirements but has some deficiencies which affect its practicality. Three kinds of improved FC's?a new direct FC and its special applications, a current source FC, and a voltage source indirect FC?which retain all good features of Venturini's FC and overcome its deficiencies are investigated. Their principles, features, and problems are discussed. New control laws and control circuits are proposed. 相似文献
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区域电网采用特高压直流异步方式联网后,现有的自动发电控制(AGC)系统控制策略对异步联网电网的特高压直流频率控制(FC)的适应性问题已显现。为分析直流频率控制对AGC系统控制效果带来的影响,采用直流FC和AGC的准稳态模型分析了其交互作用的机理;基于电力系统全过程动态仿真程序(PSD-FDS)进行直流FC与AGC控制的动态过程仿真,在时域与频域内进一步分析了直流FC控制对电网AGC控制影响过程,提出了AGC控制策略优化建议。分析表明,直流FC的投入能够减轻频率的波动幅值,但是在严重故障下的功率缺失却需要AGC来承担;而在联络线频率偏差控制模式下,也需要考虑AGC与直流FC协调配合来避免AGC在故障下反向调节和频率恢复缓慢的问题。 相似文献
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The most important purpose of this work is to analyze the phenomenon of a fuel starvation of a PEM FC system. The incentive for automotive FC applications is quite different from that for stationary power generation or other applications. The dynamic characteristics of FC must be considered. Experimental results based on a PEMFC (500 W, 40 A) noticeably substantiate that, to employ an FC in dynamic applications, its current or power slope must be limited to improve an FC performance, including its voltage-current curve and lifetime. The use of other kinds of auxiliary power source(s) as depicted in the paper, such as batteries or supercapacitors to cooperate with FC main source, is mandatory for high dynamic applications, particularly for future FCVs. 相似文献