Startup power control in a fuel cell system
    11.
    发明授权
    Startup power control in a fuel cell system 有权
    燃料电池系统中的启动功率控制

    公开(公告)号:US08263276B1

    公开(公告)日:2012-09-11

    申请号:US12458173

    申请日:2009-07-02

    Abstract: A method for starting up a fuel cell arrangement includes receiving a first electrical signal from an alternative power source. At least a portion of the first electrical signal is provided to a balance of plant (BOP) load, where the BOP load is in electrical communication with a fuel cell system. It is determined whether a startup threshold of the fuel cell system is met. If the startup threshold is met, a second electrical signal is provided from the fuel cell system to the BOP load, where a combination of the first electrical signal and the second electrical signal corresponds to a load demand of the BOP load. A value of the second electrical signal is increased and a value of the first electrical signal is decreased until the load demand of the BOP load is met by the fuel cell system.

    Abstract translation: 用于启动燃料电池装置的方法包括从替代电源接收第一电信号。 第一电信号的至少一部分被提供给工厂(BOP)负载的平衡,其中BOP负载与燃料电池系统电连通。 确定是否满足燃料电池系统的启动阈值。 如果满足启动阈值,则从燃料电池系统向BOP负载提供第二电信号,其中第一电信号和第二电信号的组合对应于BOP负载的负载需求。 第二电信号的值增加,并且第一电信号的值减小,直到燃料电池系统满足BOP负载的负载需求为止。

    Method for industrial energy and emissions investment optimization
    12.
    发明申请
    Method for industrial energy and emissions investment optimization 审中-公开
    工业能源和排放投资优化方法

    公开(公告)号:US20100257124A1

    公开(公告)日:2010-10-07

    申请号:US12798617

    申请日:2010-04-07

    Abstract: The invention is an optimization method comprising of: (a) uniform and efficient model and associated methods for computing the energy and emission impacts of each of a range of technological and commercial options, and (b) an integrated and efficient optimization model for trading off the technological and commercial options against each other to arrive at a financially optimal solution that complies with regulatory caps on emission. The energy and emission impact model handles options such as energy efficiency measures, renewable energy projects, carbon capture projects and carbon offsets. In addition to handling the direct emissions, the model handles indirect emissions resulting from purchased electricity or fuel. The integrated optimization model selects the solution that maximizes the total net present value of savings across the various technological and commercial options considering the location specific rates, prices and carbon caps as well as the different levels of investments within each project to choose from; this model performs this optimization over a series of time periods respecting capital budget and operational budget constraints. The quantities of carbon offsets that must be purchased or sold are also determined as part of this integrated model.

    Abstract translation: 本发明是一种优化方法,包括:(a)统一和有效的模型和相关方法,用于计算各种技术和商业选项中的每一种的能量和排放影响,以及(b)综合和有效的优化模型,用于交易 技术和商业选择相互抵触,以获得符合排放监管上限的财务最佳解决方案。 能源和排放量影响模型处理能源效率措施,可再生能源项目,碳捕获项目和碳补偿等选项。 除了处理直接排放之外,该模型还处理由购买的电力或燃料引起的间接排放。 综合优化模型选择考虑到具体位置特定价格,价格和碳上限以及每个项目可选择的不同投资水平,最大限度地提高各种技术和商业选择的储蓄净现值的解决方案; 该模型在一系列关于资本预算和运营预算约束的时间段内执行此优化。 必须购买或出售的碳抵消量也被确定为该综合模型的一部分。

    Ripple cancellation
    14.
    发明申请
    Ripple cancellation 有权
    纹波取消

    公开(公告)号:US20080280175A1

    公开(公告)日:2008-11-13

    申请号:US11797707

    申请日:2007-05-07

    CPC classification number: H02M7/497 H02M1/14 Y10T307/685

    Abstract: Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the present invention relate to methods and systems usable to reduce ripple currents in fuel cells.

    Abstract translation: 描述了用于发电系统的系统,方法和装置。 特别地,本发明的实施例涉及用于燃料电池的功率调节系统的结构及其中使用的方法。 更具体地,本发明的实施例涉及可用于减少燃料电池中的纹波电流的方法和系统。

    Method for part procurement in a production system with constrained
resources
    17.
    发明授权
    Method for part procurement in a production system with constrained resources 失效
    在资源有限的生产系统中部件采购的方法

    公开(公告)号:US5970465A

    公开(公告)日:1999-10-19

    申请号:US871567

    申请日:1997-06-04

    Abstract: A method for determining procurement for parts (P) in a production system having constraints comprising at least one of constrained resources (r.sub.i) and known maximum demands (d.sub.j). The method comprises two steps. Step 1 includes constructing a production planning decision space comprising independent sets of hyperplanes defined by decision variables (q.sub.j) corresponding to product quantities for products (j). The constructing step subsumes steps of expressing a potential usage of part (p) as a linear combination of production quantities (q.sub.j) based on bill of material usage rules; limiting the production quantities (q.sub.j) so that each is less than or equal to the maximum demand quantity (d.sub.j); and limiting the production quantities (q.sub.i) so that the usage of each resource (r) is based on bill of material and bill of capacity usage rates less than or equal to the availability of that resource. For each part p, the second step includes locating a region in the decision space corresponding to a high level of usage of part (p).

    Abstract translation: 一种用于确定具有约束资源(ri)和已知最大需求(dj)中的至少一个的约束的生产系统中的部件(P)的采购的方法。 该方法包括两个步骤。 步骤1包括构建生产计划决策空间,其包括由对应于产品(j)的产品数量的决策变量(qj)定义的独立的超平面集合。 构建步骤包括基于物料清单使用规则将部分(p)的潜在用途表示为生产量(qj)的线性组合的步骤; 限制生产量(qj),以使每个生产量小于或等于最大需求量(dj); 并限制生产数量(qi),以使每个资源(r)的使用基于物料清单和容量使用率单位小于或等于该资源的可用性。 对于每个部分p,第二步骤包括将对应于部分(p)的高级别使用的判定空间中的区域定位。

    Absorbent, flushable, bio-degradable, medically-safe nonwoven fabric
with PVA binding fibers, and process for making the same
    18.
    发明授权
    Absorbent, flushable, bio-degradable, medically-safe nonwoven fabric with PVA binding fibers, and process for making the same 失效
    具有PVA粘合纤维的吸收性,可冲洗的,生物可降解的,医疗安全的非织造织物及其制造方法

    公开(公告)号:US5500281A

    公开(公告)日:1996-03-19

    申请号:US200597

    申请日:1994-02-23

    Abstract: An absorbent, flushable, bio-degradable, and medically-safe nonwoven fabric suitable for use as wraps, wipes, absorbent pads, etc., is composed of from 2% to 10% by weight of untreated, water-soluble polyvinyl alcohol (PVA) fibers that are heat-bonded to a matrix of absorbent fibers. The use of PVA fibers in low amounts provides softness, while sufficient wet strength is provided by heat bonding the PVA fibers completely to the other fibers in a two-stage heating process. The resulting nonwoven fabric has a high wet-to-dry tensile strength ratio, good drape softness, and high fluid absorptive capacity. In a method for producing the nonwoven fabric, the PVA fibers are blended with the absorbent fibers, the blended fibers are carded onto a moving web, sufficient water is added to wet the PVA fibers while maintaining web integrity, then the web is heated in two stages, the first with heating cylinders at 40.degree. C. to 80.degree. C., then the second with heating cylinders of 60.degree. C. to 100.degree. C. The fiber web may also be hydroentangled and patterned for enhanced strength and textural properties.

    Abstract translation: 适合用作包装,擦拭物,吸收垫等的吸收性,可冲洗,生物可降解和医疗安全的非织造织物由2%至10%重量的未处理的水溶性聚乙烯醇(PVA )热粘合到吸收性纤维基质上的纤维。 使用PVA纤维的量低,提供柔软性,而通过在两阶段加热过程中将PVA纤维完全热粘合到其它纤维上提供了足够的湿强度。 所得非织造织物具有高的湿 - 干拉伸强度比,良好的悬垂柔软度和高的流体吸收能力。 在制造无纺布的方法中,将PVA纤维与吸收性纤维共混,将混合纤维梳理到移动纤维网上,加入足够的水以润湿PVA纤维,同时保持纤维网完整性,然后将纸幅加热至两 阶段,第一个加热缸在40℃至80℃,然后第二个加热缸为60℃至100℃。纤维网也可以水力缠结和图案化以增强强度和织构性能。

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