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    Capacitor bank for ac networks
    1.
    发明授权
    Capacitor bank for ac networks 失效
    电力银行交流网络

    公开(公告)号：US3703680A

    公开(公告)日：1972-11-21

    申请号：US3703680D

    申请日：1971-02-08

    Applicant: ASEA AB

    Inventor： FRANK KJELL ,  JOHANSSON LENNART

    IPC: G05F1/573 ,  H02J3/18 ,  G05F1/68

    CPC classification number: H02J3/1892 ,  G05F1/573 ,  H02J3/1828 ,  Y02E40/30

    Abstract: A capacitor bank for alternating current networks has a number of parallel branches each of which is connected by antiparallelconnected thyristors to the network. There is a control device for each thyristor which, when the bank is fully loaded, connects the thyristors in one conducting direction or the other in synchronism with the maximum of the network voltage in such direction. Each branch of the bank can be recharged by the full load during each half-period of the network voltage. Upon the occurrence of reduced load on the bank, the control devices emit current pulses to connect the thyristor switches in one direction or the other of the maxima of the network voltage in such direction for recharging. These latter pulses are emitted at a frequency which is substantially less thaN the network frequency.

    Abstract translation: 用于交流网络的电容器组具有多个并联支路，每个支路通过反并联连接的晶闸管连接到网络。 每个晶闸管都有一个控制装置，当该组件满载时，在一个导通方向上或另一个导通方向上，以这种方向与网络电压的最大值同步连接晶闸管。 银行的每个分支可以在网络电压的每个半周期内由满载充电。 在存储器上发生负载减小时，控制装置发射电流脉冲，以将该晶闸管开关沿网络电压的最大值的一个方向或另一个方向连接在这样的方向上用于再充电。 这些后面的脉冲以基本上小于网络频率的频率发射。

    Asynchronous machine
    6.
    发明专利
    Asynchronous machine 未知

    公开(公告)号：DE3518740A1

    公开(公告)日：1986-01-02

    申请号：DE3518740

    申请日：1985-05-24

    Applicant: ASEA AB

    Inventor： JOHANSSON LENNART ,  PARKSJOE GOETE ,  WESTER HENRI

    IPC: H02K17/16 ,  H02K5/24

    Abstract: In the case of an asynchronous machine having a squirrel-cage winding in the rotor (2), each winding bar is designed with at least one V-shaped section (6). In this case, one limb of the V-shaped section is constructed with a greater slot inclination angle than the other limb. This results in a considerable reduction in the magnetic noise.

    7.
    发明专利
    未知

    公开(公告)号：FR2513715A1

    公开(公告)日：1983-04-01

    申请号：FR8215946

    申请日：1982-09-22

    Applicant: ASEA AB

    Inventor： ENBERG BO ,  JOHANSSON LENNART

    IPC: F16D65/46 ,  F16D55/00 ,  F16D55/28 ,  F16D59/02 ,  F16D65/14 ,  F16D65/22 ,  H02K7/102 ,  F16D55/46 ,  F16D65/27

    Abstract: An electromagnetic disc brake for rotating machines having a rotating brake disc (9), which is mounted on the machine shaft (8) and is arranged between two brake discs (6,7) which cannot rotate. In this arrangement, the brake disc (6) forms the armature, moving in the axial direction, of an electromagnet (A). The brake disc (6) is pressed by springs (20) against the brake disc (9), which rotates with the machine shaft, and a second fixed brake disc (7). The disc brake has an adjusting device for manual, infinitely variable adjustment of the air gap (a) which consists of adjusting nuts (13) which are axially fixed but are supported such that they can rotate in the magnet housing (4). The adjusting nuts (13) interact with the bolts (3) supporting the brake. The springs (20) acting on the brake disc (6) are arranged in recesses (19) in the adjusting nuts (13).

    9.
    发明专利
    未知

    公开(公告)号：DK134837B

    公开(公告)日：1977-01-24

    申请号：DK51471

    申请日：1971-02-05

    Applicant: ASEA AB

    Inventor： FRANK KJELL ,  JOHANSSON LENNART

    IPC: G05F1/573 ,  H02J3/18

    Abstract: A capacitor bank for alternating current networks has a number of parallel branches each of which is connected by antiparallel-connected thyristors to the network. There is a control device for each thyristor which, when the bank is fully loaded, connects the thyristors in one conducting direction or the other in synchronism with the maximum of the network voltage in such direction. Each branch of the bank can be recharged by the full load during each half-period of the network voltage. Upon the occurrence of reduced load on the bank, the control devices emit current pulses to connect the thyristor switches in one direction or the other of the maxima of the network voltage in such direction for recharging. These latter pulses are emitted at a frequency which is substantially less thaN the network frequency.

    10.
    发明专利
    未知

    公开(公告)号：DE2220863A1

    公开(公告)日：1972-12-07

    申请号：DE2220863

    申请日：1972-04-28

    Applicant: ASEA AB

    Inventor： JOHANSSON LENNART ,  HORVATH JOSEF

    IPC: B66C1/66

    Abstract: A spreader for handling unit containers includes a frame with recesses in the corners, and an exchangeable unit secured within each of the recesses with a pivotable, vertical lifting latch for insertion into a hole in a corner fitting in a container. The pivotable latch is turnable in a block which is adjustable in both horizontal directions with respect to the recess. The latch has a cross piece at its bottom for engagement beneath the top wall of the container after passing through an opening therein.

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