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    ELECTRICAL SWITCH
    201.
    发明申请
    ELECTRICAL SWITCH 审中-公开

    公开(公告)号：US20190326083A1

    公开(公告)日：2019-10-24

    申请号：US16386641

    申请日：2019-04-17

    Applicant: ABB Oy

    Inventor： Fredrik Strand ,  Mikko Välivainio ,  Jukka Lintamo ,  Juha Soldan

    IPC: H01H33/06 ,  H01H33/10 ,  H01H33/14 ,  H01H33/18

    Abstract: An electrical switch. The electrical switch includes at least one fixed contact and a movable contact contacting the fixed contact. At least one shutter element is arranged to move in synchronism with the movable contact. The shutter element is positioned in an extended position between the fixed contact and the movable contact and in a contracted position outside the patch of the movable contact allowing the movable contact to turn from the open position to the closed position.

    Aging determination of power semiconductor device in electric drive system
    204.
    发明授权
    Aging determination of power semiconductor device in electric drive system 有权

    公开(公告)号：US10261122B2

    公开(公告)日：2019-04-16

    申请号：US15192579

    申请日：2016-06-24

    Applicant: ABB OY

    Inventor： Jukka-Pekka Sjoroos ,  Kari Tikkanen

    IPC: G01R31/26 ,  H02P29/02 ,  H02M1/32 ,  H02M7/48 ,  G01R31/00

    Abstract: Monitoring aging in an electric drive system includes energizing the electric drive system such that electrical current flows through a power semiconductor device therein, determining a value indicative of a voltage across the power semiconductor device, at a current level where voltage is substantially independent of temperature, comparing the determined value with a reference value, and outputting a signal responsive to a difference between the values that is indicative of an aging state of the power semiconductor device.

    Method and apparatus for balancing currents
    206.
    发明授权
    Method and apparatus for balancing currents 有权

    公开(公告)号：US09941873B2

    公开(公告)日：2018-04-10

    申请号：US14567461

    申请日：2014-12-11

    Applicant: ABB Oy

    Inventor： Ignacio Lizama ,  Rodrigo Alonso Alvarez Valenzuela ,  Steffen Bernet ,  Matti Laitinen

    IPC: H03K17/04 ,  H03K17/042 ,  H03K17/082 ,  H03K17/12

    CPC classification number: H03K17/042 ,  H03K17/082 ,  H03K17/12 ,  H03K2217/0027

    Abstract: A method and apparatus are provided for balancing currents of two or more parallel-connected power semiconductor switches during an on-state of the switches. A control terminal of each switch is driven by a driver unit. The method includes determining ratios between the currents through the switches. For each switch, the method includes controlling the voltage at the control terminal on the basis of the ratios by controlling a level of a supply voltage of the driver unit of the switch, and after a turn-on commutation transient, modulating the output of the driver unit. The duty cycle of the modulation is controlled to minimize the time required for the transition of the voltage at the control terminal from the one voltage level to another.

    ELECTRIC SWITCH
    208.
    发明申请
    ELECTRIC SWITCH 审中-公开

    公开(公告)号：US20180082807A1

    公开(公告)日：2018-03-22

    申请号：US15566621

    申请日：2015-04-13

    Applicant: ABB Oy

    Inventor： Yi'er Wu ,  Jiancheng Ren ,  Aki Suutarinen ,  Janne Rosenberg

    IPC: H01H19/14 ,  H01H3/38 ,  H01H3/46

    Abstract: An electric switch comprising a mechanism module and a contact module, the contact module comprising a base element, a cover element, fixed contacts and a rotary roll for receiving moving contacts, the mechanism module comprising a base element, a cover element, a front pipeshaft for controlling the switch from front, an inner pipeshaft for controlling the switch from side end, the pipeshafts being engaged to each other by teeth to form a gear for transferring a moment from the front pipeshaft to the inner pipeshaft, a lever for transferring a moment to the roll, the lever arranged to receive the inner pipeshaft, the inner pipeshaft and the lever being rotatable engaged with each other, and main springs for giving a rotational moment for the lever and being connected of first ends to the base element and the mains springs being connected to the lever of their second ends.

    A VESSEL AND A METHOD IN A VESSEL WITH A HULL AND A PROPULSION UNIT
    209.
    发明申请
    A VESSEL AND A METHOD IN A VESSEL WITH A HULL AND A PROPULSION UNIT 审中-公开

    公开(公告)号：US20180072395A1

    公开(公告)日：2018-03-15

    申请号：US15560061

    申请日：2016-03-17

    Applicant: ABB Oy

    Inventor： Petri Pellinen

    IPC: B63H23/32 ,  B63H23/34 ,  B63H21/17 ,  B63H5/07

    CPC classification number: B63H23/321 ,  B63H5/07 ,  B63H5/125 ,  B63H21/17 ,  B63H23/34 ,  B63H2005/1256 ,  B63H2005/1258

    Abstract: A vessel and a method in a vessel with a hull and a propulsion unit. The propulsion unit comprises a hollow strut rotatably attached to the hull of the vessel, a propeller shaft having an axial centre line and being positioned and supported in the lower portion of the strut with bearings, a propeller being attached to at least one end of the propeller shaft protruding from the lower portion of the strut, and an electric motor driving the propeller shaft. An additional support arrangement is positioned at least in one end portion of the propeller shaft axially outwards from the bearings. The support arrangement comprises a first support surface formed in connection with the propeller shaft and a second support surface mating with the first support surface and being formed in connection with the lower portion of the strut. The second support surface is positioned at a predetermined distance from the first support surface so that a slot is formed between the first support surface and the second support surface facing towards each other. The being of the propeller shaft due to external loads acting on the propeller is restricted to a predetermined maximum value with the support surfaces.

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