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6 条记录 (耗时 0.01 秒)

    MODULAR MULTI -LEVEL POWER CONVERTER WITH SECOND AND THIRD ORDER HARMONICS REDUCTION FILTER
    3.
    发明公开
    MODULAR MULTI -LEVEL POWER CONVERTER WITH SECOND AND THIRD ORDER HARMONICS REDUCTION FILTER 有权
    带锁滤波器，二次和三次谐波模块化多电平转换器

    公开(公告)号：EP2559143A1

    公开(公告)日：2013-02-20

    申请号：EP10713679.8

    申请日：2010-04-15

    申请人： ABB Research Ltd

    发明人： HARNEFORS, Lennart ,  NORRGA, Staffan ,  SHUKLA, Anshuman

    IPC分类号： H02M1/12 ,  H02M1/14 ,  H02M7/49

    CPC分类号： H02M1/126 ,  H02M1/14 ,  H02M7/49 ,  H02M2007/4835

    摘要： A device for converting a DC voltage into an AC voltage comprises a passive electronic filter (18) having a first and a second energy storage element (9, 10), a third energy storage element (19) placed between the first and second energy storage elements, a fourth energy storage element (20) connected between a junction of the first energy storage element and the third energy storage element and an AC terminal and a fifth energy storage element (21) connected between a junction of the second energy storage element and the third energy storage element and the AC terminal. The energy storage elements are of two different types, capacitive and inductive, with values selected to provide reduction of frequency components at two times the fundamental frequency of the AC voltage and at three times the fundamental frequency of the AC voltage.

    METHOD IN A CASCADED TWO-LEVEL CONVERTER, CONTROL DEVICE AND COMPUTER PROGRAM PRODUCTS
    4.
    发明公开
    METHOD IN A CASCADED TWO-LEVEL CONVERTER, CONTROL DEVICE AND COMPUTER PROGRAM PRODUCTS 有权
    过程中的级联的两级转换器，控制设备和计算机程序产品

    公开(公告)号：EP2396882A1

    公开(公告)日：2011-12-21

    申请号：EP09779038.0

    申请日：2009-02-11

    申请人： ABB Research Ltd.

    发明人： JONSSON, Tomas, U. ,  HARNEFORS, Lennart

    IPC分类号： H02M7/797 ,  H02M1/12

    CPC分类号： H02M7/483 ,  H02M2001/0025 ,  H02M2007/4835

    摘要： The invention relates to a method (20) for providing a switching order signal to a cell (2
    1 ..., 2
    n ) of a cascaded two-level converter (1). The (2
    1 ..., 2
    n ) comprises a capacitor parallel-connected with two series-connected semiconductor devices (3a, 3b). The cascaded two-level converter comprises two or more of the cells cascade connected and arranged in a phase, divided into two phase arms (7, 8), between a first pole (4a) and a second pole (4b) of a direct voltage side. The method (20) is characterized by the steps of : measuring (21) voltages of the capacitor of the cell; calculating (22) a compensated voltage reference based on a voltage reference and the measured voltages of the capacitors, wherein the voltage reference corresponds to a desired ac current to be output on an ac-side; using the compensated voltage reference (r) to calculate a switching order signal, and providing the switching order signal to the cells (2
    1 ..., 2
    n ).

    CONTROLLING A HIGH-VOLTAGE DIRECT-CURRENT (HVDC) LINK
    6.
    发明公开
    CONTROLLING A HIGH-VOLTAGE DIRECT-CURRENT (HVDC) LINK 审中-公开
    控制一HVDC化合物（HVDC高压直流输电/高压直流）

    公开(公告)号：EP2382699A1

    公开(公告)日：2011-11-02

    申请号：EP09796381.3

    申请日：2009-12-21

    申请人： ABB Research Ltd.

    发明人： PAPAFOTIOU, Georgios ,  BECCUTI, Giovanni ,  HARNEFORS, Lennart

    IPC分类号： H02J3/36

    CPC分类号： H02J3/36 ,  Y02E60/60

    摘要： The present disclosure is directed to a High Voltage Direct Current (HVDC) link with Voltage Source Converters VSC and interconnecting two power systems. A model-predictive control with a receding horizon policy is employed for controlling the outer loop of a two-loop or two-layer control scheme or setup for the HVDC link. The two-loop control scheme takes advantage of the difference in speed of the dynamics of the various system variables of the HVDC link and the interconnected power systems. Model-based prediction representative of the interconnected power systems' behavior enables comparison of the future effect of different control inputs applied within the control scheme, while taking into account any physical, safety and operating constraints. It is valid for a complete operating range, e.g., it avoids performance degradation when moving away from the nominal operating point of the control scheme for a HVDC link.