公开(公告)号：US20150077067A1

公开(公告)日：2015-03-19

申请号：US14314484

申请日：2014-06-25

Applicant: Masdar Institute of Science and Technology

Inventor： Parag Kanjiya ,  Bharath Ambati ,  Vinod Khadkikar

IPC: H02P9/10 ,  H02H7/06

CPC classification number: H02P9/10 ,  H02H7/067

Abstract: This disclosure is directed to a fault-tolerant energy conversion system. A fault-tolerant doubly-fed induction generator (DFIG) for use with a wind energy conversion system (WECS) consistent with the present disclosure may allow for seamless operation during all kinds of grid faults. In one embodiment, a six-switch grid side converter (GSC) commonly used with such systems may be replaced with nine-switch converter circuitry. With three additional switches, the nine-switch converter can provide two independent three phase outputs. For example, one three-phase output may be coupled to the grid through interfacing inductors to realize normal GSC operation, while the other three-phase output may be coupled to neutral side of the stator windings to provide fault ride-through (FRT) capability to the DFIG. A control algorithm may be employed that both achieves seamless fault ride-through during any kind of grid faults and strictly satisfies grid codes requirements.

Abstract translation: 本公开涉及容错能量转换系统。 与本公开一致的用于风能转换系统（WECS）的容错双馈感应发电机（DFIG）可允许在各种电网故障期间的无缝操作。 在一个实施例中，与这种系统通常使用的六开关电网侧转换器（GSC）可以用九开关转换器电路代替。 使用三个附加开关，九开关转换器可以提供两个独立的三相输出。 例如，一个三相输出可以通过接口电感器耦合到电网，以实现正常的GSC操作，而另一个三相输出可以耦合到定子绕组的中性侧，以提供故障穿越（FRT）能力 到DFIG。 可以采用在任何种类的电网故障中实现无缝故障穿越的严格满足电网规范要求的控制算法。

公开(公告)号：US20140217022A1

公开(公告)日：2014-08-07

申请号：US14169764

申请日：2014-01-31

Applicant: Masdar Institute of Science and Technology

Inventor： Raed Hashaikeh ,  Boor Lalia ,  Nidal Hilal

IPC: B01D65/02 ,  C02F1/44

CPC classification number: B01D65/02 ,  B01D65/08 ,  B01D69/12 ,  B01D71/021 ,  B01D71/024 ,  B01D71/32 ,  B01D71/34 ,  B01D2311/2688 ,  B01D2321/18 ,  B01D2321/22 ,  B01D2323/39 ,  C02F1/44 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/447 ,  C02F1/4672 ,  C02F2303/16 ,  C25B9/08 ,  Y02A20/131

Abstract: A membrane is provided herein having the ability to remove/prevent membrane fouling. This novel membrane consists of a thin electrically conductive layer deposited on the membrane surface. This unique membrane can be used as an electrode in an electrochemical system that consists of the membrane, the salty water as an electrolyte and a counter electrode that can be inserted in the saline feed solution. A periodic electrolysis can be performed. Electrolysis will generate gases (e.g., Cl2 and O2) and the periodic gases evolution at the membrane surface acts to clean and prevent both fouling and scaling of the membrane surface. The new system enables on-line self-cleaning mechanism of the membrane, which is useful for, inter alia, use of such a membrane in a system for the desalination of saline water or wastewater.

Abstract translation: 本文提供的膜具有去除/防止膜污染的能力。 该新型膜由沉积在膜表面上的薄导电层组成。 这种独特的膜可以用作电化学系统中的电极，其由膜，作为电解质的咸水和可插入盐水进料溶液中的对电极组成。 可以进行周期性电解。 电解将产生气体（例如Cl 2和O 2），并且在膜表面放出的周期性气体用于清洁并防止膜表面的结垢和结垢。 该新系统能够实现膜的在线自清洁机制，其尤其可用于在用于盐水或废水脱盐的系统中的这种膜。

公开(公告)号：US20130278111A1

公开(公告)日：2013-10-24

申请号：US13833159

申请日：2013-03-15

Applicant: Masdar Institute of Science and Technology ,  Massachusetts Institute of Technology

Inventor： Firas Sammoura ,  Katherine Marie Smyth ,  Sang-Gook Kim

IPC: H01L41/047 ,  H01L41/09

CPC classification number: H01L41/047 ,  B06B1/0622 ,  B06B1/0625 ,  B06B1/0629 ,  H01L41/09 ,  H01L41/0926

Abstract: A piezoelectric micro-machined ultrasonic transducer (PMUT) uses multiple electrodes, e.g., in a radial pattern for a disc, to improve performance. The multiple electrodes may be differentially driven to operate the PMUT in d31 mode (that is, with an applied electrical field perpendicular to the piezoelectrically-induced strain) where deflection relative to input voltage is increased and in-plane stresses are reduce, thus improving overall performance.

Abstract translation: 压电微加工超声波换能器（PMUT）使用多个电极，例如以盘的径向图案来改善性能。 多个电极可以被差分驱动以在d31模式（即，垂直于压电感应应变的施加电场）中操作PMUT，其中相对于输入电压的偏转增加并且面内应力减小，从而改善整体 性能。

公开(公告)号：US20130153497A1

公开(公告)日：2013-06-20

申请号：US13716662

申请日：2012-12-17

Applicant: Masdar Institute of Science and Technology

Inventor： Hassan Ali Arafat

IPC: B01D61/36

CPC classification number: B01D61/366 ,  B01D61/364 ,  B01D2311/04 ,  B01D2313/243

Abstract: A VMD system and method uses an aspirator to generate a vacuum pressure for drawing permeate from a membrane module. The aspirator generates the vacuum pressure by receiving and passing a circulating liquid and combines the permeate with the circulating liquid such that the permeate condensates in the circulating liquid. Using an aspirator (e.g., instead of a vacuum pump) allows a more efficient and cost-effective operation of the VMD system and method, particularly in a desalination application. A VMD system and method using an aspirator may be used in desalination and other applications including, without limitation, environmental cleanup (e.g., removal of volatile organic chemicals from water) and food and medical applications.

Abstract translation: VMD系统和方法使用吸气器产生用于从膜组件吸取渗透物的真空压力。 抽吸器通过接收和通过循环液体产生真空压力，并将渗透物与循环液体结合，使得渗透物在循环液体中冷凝。 使用吸气器（例如代替真空泵）允许VMD系统和方法的更有效和成本有效的操作，特别是在脱盐应用中。 使用吸气器的VMD系统和方法可以用于脱盐和其它应用，包括但不限于环境清洁（例如，从水中除去挥发性有机化学物质）以及食品和医疗应用。