Converter arrangement with a capacitance

    公开(公告)号:US09673728B2

    公开(公告)日:2017-06-06

    申请号:US14737149

    申请日:2015-06-11

    CPC classification number: H02M7/062 H02M1/36

    Abstract: A converter arrangement can include a first rectifier having an AC input and a DC output with two DC output poles, a capacitance (C) connected between the DC output poles of the first rectifier, a second rectifier having an AC input with two AC input poles and a DC output with two DC output poles, wherein the DC output of the second rectifier is connected between the DC output poles of the first rectifier. A magnetic amplifier includes at least one control winding (L2) and at least one AC winding (L11, L12), wherein the at least one control winding is connected between the DC output poles of the first rectifier, and wherein the at least one AC winding (L2) of the magnetic amplifier is connected in series with the AC input of the second rectifier.

    Actuator assembly
    82.
    发明授权

    公开(公告)号:US09671775B2

    公开(公告)日:2017-06-06

    申请号:US14337558

    申请日:2014-07-22

    Applicant: ABB Oy

    Abstract: An actuator assembly is disclosed, which includes a power unit, an actuator powered by the power unit, the power unit being configured to provide a work motion of the actuator, a motion sensor, a timing unit for measuring an immobility time of the actuator, a safety unit for selectively placing the actuator assembly into an operational state and a safety state in which the work motion of the actuator can be prevented, the safety unit being configured to prevent the operational state of the actuator assembly in case the immobility time of the actuator exceeds a predetermined process safety time. The actuator assembly can include an activation unit configured to control the power unit to provide an activation motion of the actuator in case the immobility time exceeds a predetermined activation time.

    Three-level converter and method for controlling three-level converter

    公开(公告)号:US09627989B2

    公开(公告)日:2017-04-18

    申请号:US14860031

    申请日:2015-09-21

    Inventor: Tero Viitanen

    CPC classification number: H02M5/4585 H02M7/487

    Abstract: A three-level converter and a method for controlling a three-level converter, wherein the third (S31, S32, S33), the fourth (S41, S42, S43) and the fifth (S51, S52, S53) controllable semiconductor switch of a switching branch having, out of all the switching branches, the most positive voltage in its alternating current pole (AC1, AC2, AC3) is controlled to be non-conductive for the whole period of time when the switching branch in question has the most positive voltage in its alternating current pole, and the first (S11, S12, S13), the second (S21, S22, S23) and the sixth (S61, S62, S63) controllable semiconductor switch of a switching branch having, out of all the switching branches, the most negative voltage in its alternating current pole is controlled to be non-conductive for the whole period of time when the switching branch in question has the most negative voltage in its alternating current pole.

    Control of reverse-conducting IGBT
    84.
    发明授权

    公开(公告)号:US09614518B2

    公开(公告)日:2017-04-04

    申请号:US14972420

    申请日:2015-12-17

    Abstract: Unique systems, methods, techniques and apparatuses of a reverse-conducting IGBT (RC-IGBT) are disclosed. One exemplary embodiment is a circuit comprising a series connection of controllable switch components where at least one of the controllable switch components is an RC-IGBT. The circuit is operated by applying a pre-trigger pulse to the gate electrode of the RC-IGBT during reverse conduction of the RC-IGBT at a first time instant, the pre-trigger pulse corresponding to a turn-on gate pulse. Next, a turn-on gate pulse is applied at a second time instant to the other controllable switch component of the series connection for controlling the other controllable switch component to a conductive state such that the pre-trigger pulse and the turn-on gate pulse overlap, and ending the pre-trigger pulse after a delay time at the third time instant. The delay time is the time period when the turn-on gate pulse and the pre-trigger pulse overlap.

    Method and apparatus for balancing voltages of multi-level inverter DC link
    86.
    发明授权
    Method and apparatus for balancing voltages of multi-level inverter DC link 有权
    用于平衡多电平逆变器直流母线电压的方法和装置

    公开(公告)号:US09595864B2

    公开(公告)日:2017-03-14

    申请号:US14478140

    申请日:2014-09-05

    Applicant: ABB Oy

    Inventor: Samuli Heikkilä

    CPC classification number: H02M1/44 H02M7/487

    Abstract: A method is provided for balancing voltages of a DC link of a multi-level inverter, where the DC link is divided into two halves by a neutral point connection. The method includes injecting a periodic common-mode voltage injection signal to a common-mode voltage reference and a periodic power injection signal to a power reference of the inverter. The power injection signal has the same frequency as the common-mode voltage injection signal. A phase shift between the common-mode voltage injection signal and the power injection signal is constant. The amplitude of at least one of the common-mode voltage injection signal and the power injection signal is controlled on the basis of a difference between voltages over the two halves of the DC link. An apparatus is also provided for implementing the method.

    Abstract translation: 提供一种用于平衡多电平逆变器的DC链路的电压的方法,其中DC链路通过中性点连接被分成两半。 该方法包括将共模电压基准的周期性共模电压注入信号和周期性功率注入信号注入到逆变器的功率基准。 功率注入信号具有与共模电压注入信号相同的频率。 共模电压注入信号和功率注入信号之间的相移是恒定的。 基于DC链路两半的电压之间的差异来控制共模电压注入信号和功率注入信号中的至少一个的振幅。 还提供了一种用于实现该方法的装置。

    Method and arrangement for estimating flow rate of pump
    89.
    发明授权
    Method and arrangement for estimating flow rate of pump 有权
    泵的流量估算方法及装置

    公开(公告)号:US09416787B2

    公开(公告)日:2016-08-16

    申请号:US13433743

    申请日:2012-03-29

    CPC classification number: F04D15/0088 F04D27/001

    Abstract: A method and arrangement for determining the flow rate (Q) produced by a pump, when the pump is controlled with a frequency converter, which produces estimates for rotational speed and torque of the pump, and the characteristic curves of the pump are known. The method includes determining the shape of a QH curve of the pump, dividing the QH curve into two or more regions depending on the shape of the QH curve, determining on which region of the QH curve the pump is operating, and determining the flow rate (Q) of the pump using the determined operating region of the characteristic curve.

    Abstract translation: 当用变频器控制泵来确定由泵产生的流量(Q)的方法和装置,其产生泵的转速和扭矩的估计值,以及泵的特性曲线是已知的。 该方法包括确定泵的QH曲线的形状,根据QH曲线的形状将QH曲线分为两个或更多个区域,确定泵在哪个区域运行,并确定流量 (Q),使用所确定的特征曲线的工作区域。

    Arrangement and method for a vehicle inverter drive
    90.
    发明授权
    Arrangement and method for a vehicle inverter drive 有权
    车辆变频器驱动装置及方法

    公开(公告)号:US09385590B2

    公开(公告)日:2016-07-05

    申请号:US14079126

    申请日:2013-11-13

    Applicant: ABB Oy

    Abstract: A method and arrangement are disclosed for a vehicle inverter drive having a voltage distribution block and two or more inverters, intermediate circuits of which are connected in parallel to the voltage distribution block for supplying voltage to the intermediate circuits, in which the intermediate circuits of the inverters are interconnected with a coaxial cable to minimize inductance in the parallel connection.

    Abstract translation: 公开了一种用于具有电压分配块和两个或更多个逆变器的车辆逆变器驱动器的方法和装置,其中间电路并联连接到用于向中间电路提供电压的电压分配块,其中, 逆变器与同轴电缆互连,以使并联连接中的电感最小化。

Patent Agency Ranking