公开(公告)号：US20150239762A1

公开(公告)日：2015-08-27

申请号：US14424162

申请日：2012-09-10

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Sijing Wang ,  Lei Wang ,  Haiwu Zhang ,  Weiqing Xu ,  Ying Zhou

IPC: C02F3/34 ,  C02F3/10 ,  C02F3/02

CPC classification number: C02F3/341 ,  C02F3/02 ,  C02F3/04 ,  C02F3/106 ,  C02F3/107 ,  C02F3/108 ,  C02F3/1268 ,  C02F3/2853 ,  C02F3/348 ,  C02F2003/001 ,  C02F2003/003 ,  C02F2101/30 ,  C02F2101/327 ,  C02F2101/36 ,  C02F2101/38 ,  C02F2103/06 ,  C02F2103/365 ,  C02F2203/004 ,  C02F2305/06 ,  Y02W10/15

Abstract: A method for reducing recalcitrant chemical oxygen demand (COD) of a liquid in a water system is provided. The method comprises pretreating the liquid in a pretreatment unit (12) to remove indigenous bacteria or microbes to a population level below which the indigenous organisms can interfere with the screened and externally introduced microorganisms. The liquid is then provided to a reactor (20) that has a filter bed (22) formed with a carrier material (26). Special microbes are screened and used to colonize the carrier material (26) to remove recalcitrant COD. A biofilm is cultured on the surface of the carrier material (26) to immobilize the screened microbes in the reactor (20). The method further comprises adding a co-substrate as the liquid enters the reactor (20) and percolating the liquid through the filter bed (22) colonized with the screened microbes to degrade at least part of the recalcitrant COD under aerobic conditions. The screened microbes comprise at least one microbial species selected from the group consisting of Bacillus, Comamonas, Arthrobacter, Micrococcus, Pseudomonas, Pediococcus, Achromobacter, Flavobacterium, Mycobacterium, Rhodanobacter, Stenotrophomonas and yeast.

Abstract translation: 提供了一种降低水系中液体的难溶化学需氧量（COD）的方法。 该方法包括将预处理单元（12）中的液体预处理以将本地细菌或微生物除去至低于该水平的本地生物可能干扰被筛选和外部引入的微生物的群体水平。 然后将液体提供到具有形成有载体材料（26）的过滤床（22）的反应器（20）。 将特殊微生物筛选并用于定植载体材料（26）以除去顽固的COD。 在载体材料（26）的表面上培养生物膜，以将筛选的微生物固定在反应器（20）中。 该方法还包括当液体进入反应器（20）时加入共底物，并将液体渗透通过筛选的微生物定殖的过滤床（22），以在有氧条件下降解至少部分顽固性COD。 所筛选的微生物包含至少一种选自芽孢杆菌属，科马矛菌属，节杆菌属，微球菌属，假单胞菌属，类球菌属，无色杆菌属，黄杆菌属，分枝杆菌属，罗丹霉属，嗜麦芽寡养单胞菌属和酵母菌的微生物。

公开(公告)号：US20150131328A1

公开(公告)日：2015-05-14

申请号：US14074778

申请日：2013-11-08

Applicant: General Electric Company

Inventor： Fengfeng Tao ,  Michael Joseph Schutten ,  Eladio Clemente Delgado ,  Luis Jose Garces ,  Rui Zhou ,  Xinhui Wu ,  Maja Harfman Todorovic ,  Lei Wang

IPC: H02M3/335

CPC classification number: H02M3/3376 ,  H02M2001/0058 ,  H02M2001/0093 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A power conversion system is presented. The system includes a power source coupled to a power converter and a controller. The controller is configured to determine a value of at least one parameter corresponding to the power source. Additionally, the controller is configured to provide a first portion of the at least one parameter to the power converter and modify an operating frequency of the power converter, duty ratio of the power converter, or a combination thereof. Furthermore, the controller is configured to obtain an electrical quantity at an output of the power converter based on the modified operating frequency, the modified duty ratio, or a combination thereof. Also, the controller is configured to deliver a combination of the electrical quantity obtained at the output of the power converter and a second portion of the at least one parameter to a load. Method for converting power is also presented.

Abstract translation: 介绍了电力转换系统。 该系统包括耦合到功率转换器和控制器的电源。 控制器被配置为确定与电源对应的至少一个参数的值。 此外，控制器被配置为向功率转换器提供至少一个参数的第一部分，并修改功率转换器的工作频率，功率转换器的占空比或其组合。 此外，控制器被配置为基于修改的操作频率，修改的占空比或其组合来获得功率转换器的输出处的电量。 此外，控制器被配置为将在功率转换器的输出处获得的电量和至少一个参数的第二部分的组合传递给负载。 还介绍了转换功率的方法。

公开(公告)号：US20150138859A1

公开(公告)日：2015-05-21

申请号：US14080800

申请日：2013-11-15

Applicant: General Electric Company

Inventor： Rui Zhou ,  Luis Jose Garces ,  Fengfeng Tao ,  Maja Harfman Todorovic ,  Charles Michael Stephens ,  Lei Wang

IPC: H02M7/5387 ,  H02M1/14

CPC classification number: H02M7/493 ,  H02M2001/123

Abstract: A power conversion system is presented. The power conversion system includes a power converter. The power converter includes at least two circuits, where each of the at least two circuits includes two or more phase legs, where each of the two or more phase legs includes at least two semiconductor switches. Also, the at least two circuits includes an interphase reactor configured to couple one of the two or more phase legs to at least one other phase leg in the two or more phase legs. Moreover, the power conversion system includes a controller configured to obtain a switching pattern for each of the at least two semiconductor switches of the at least two circuits and selectively switch each of the at least two semiconductor switches based on the obtained switching pattern to reduce a common mode signal in the power conversion system. Method for power conversion is also presented.

Abstract translation: 介绍了电力转换系统。 电力转换系统包括电力转换器。 功率转换器包括至少两个电路，其中至少两个电路中的每一个包括两个或多个相位支路，其中两个或多个相位支路中的每一个包括至少两个半导体开关。 此外，至少两个电路包括间相反应器，其被配置为将两个或多个相位腿中的一个耦合到两个或更多个相位腿中的至少一个其他相位支路。 此外，功率转换系统包括控制器，其被配置为获得至少两个电路中的至少两个半导体开关中的每一个的开关模式，并且基于所获得的开关模式选择性地切换至少两个半导体开关中的每一个，以减少 电源转换系统中的共模信号。 还介绍了电源转换方法。