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    Control system in a converter and a method of operating a converter
    1.
    发明授权
    Control system in a converter and a method of operating a converter 有权

    公开(公告)号：US10677219B2

    公开(公告)日：2020-06-09

    申请号：US15944225

    申请日：2018-04-03

    申请人： ABB Technology Oy

    发明人： Peter Muszynski ,  Kalle Huju ,  Jussi Tamminen ,  Antti Vilhunen ,  Antti Virta

    IPC分类号： F03D7/00 ,  F03D7/02 ,  H02M5/458 ,  F03D9/25 ,  H02J3/38 ,  H02J3/46 ,  F03D7/04 ,  H02J3/18 ,  H02P101/15

    摘要： A method and a control system adapted to control a power conversion system connected to an AC power grid, wherein the control system is adapted to receive an externally provided reactive power reference and the control system includes a controller adapted to control the reactive power fed to the AC grid by the power conversion system and to produce a reactive current reference, an active current reference, a total current limiter for producing limited active and reactive current references. The total current limiter operates in reactive current priority limiting the active current reference. Further including means adapted to produce a capacity signal indicating the current capacity of the power conversion system. The control system further includes a minimum reactive power reference tracker adapted to generate an internally generated reactive power reference which is adapted to be fed to the controller adapted to control the reactive power fed by the power conversion system to the AC grid, where the minimum reactive power reference tracker is adapted to control the internally generated reactive power reference to a value with which the active current reference is not limited.

    Electrical converter and control method
    2.
    发明授权
    Electrical converter and control method 有权

    公开(公告)号：US10199955B2

    公开(公告)日：2019-02-05

    申请号：US15975045

    申请日：2018-05-09

    申请人： ABB Technology Oy

    发明人： Andrey Kalygin

    IPC分类号： H02M7/49 ,  H02M5/458 ,  H02M7/5387 ,  H02M1/00

    摘要： An electrical multi-phase converter and method for controlling an electrical multi-phase converter is disclosed. In one form a method provides for controlling the electrical multi-phase converter comprises: determining at least two supply voltages for the at least two converter cells of the at least two phase branches; determining a potential zone for each phase branch based on the at least one supply voltage of the at least one converter cell of the phase branch, the potential zone bounding a possible actual phase voltage producible by the phase branch; receiving a reference voltage for each phase branch; and, if the reference voltage for a phase branch is not within the potential zone of the phase branch, setting the reference voltage to a bound of the potential zone and shifting reference voltages of other phase branches, wherein the reference voltages are set and shifted such that a minimal common mode voltage between the output voltages of the multi-phase converter is generated.

    Driver circuit
    5.
    发明授权
    Driver circuit 有权

    公开(公告)号：US10084439B2

    公开(公告)日：2018-09-25

    申请号：US15375964

    申请日：2016-12-12

    申请人： ABB Technology Oy

    发明人： Teemu Salmia ,  Jukka-Pekka Kittilä ,  Tero Herrala ,  Mikko Taulanne

    IPC分类号： H03B1/00 ,  H03K17/04 ,  H03K17/06 ,  H03K17/14

    CPC分类号： H03K17/0406 ,  H03K17/06 ,  H03K17/14 ,  H03K17/163 ,  H03K17/168

    摘要： A gate driver circuit and a method of operating a gate driver circuit. The gate driver circuit comprising a high auxiliary voltage rail and a low auxiliary voltage rail for receiving high auxiliary voltage and low auxiliary voltage, output stage connected to the auxiliary voltage rails and comprising a control input and an output terminal for providing an output voltage of the gate driver, plurality of series connections of controllable switches and resistive components, wherein a first part of the plurality of series connections is connected between the high auxiliary voltage rail and control input of the output stage, and a second part of the plurality of series connections is connected between the low auxiliary voltage rail and control input of the output stage, and a control circuit for controlling the controllable switches for providing a control voltage and a control current to the control input of the output stage.