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    CURRENT SOURCE CONVERTER WITH DYNAMICAL FIRING ANGLE DETERMINATION
    1.
    发明申请
    CURRENT SOURCE CONVERTER WITH DYNAMICAL FIRING ANGLE DETERMINATION 审中-公开

    公开(公告)号：WO2018189036A1

    公开(公告)日：2018-10-18

    申请号：PCT/EP2018/058789

    申请日：2018-04-05

    Applicant: ABB SCHWEIZ AG

    Inventor： BESSELMANN, Thomas ,  PIEDER, Jörg

    IPC: H02M5/45

    Abstract: A thyristor bridge (28, 34) of an electrical converter (12) is connected to at least one DC link (30) and comprising at least one phase leg (40) for each output phase (R, S, T) and each phase leg (40) being composed of two series-connected thyristor arms (38). The thyristor arms (38) of a thyristor bridge (28, 34) are cyclically switched by: determining an upper bound (76) for a firing angle (66) of a thyristor arm (38), wherein the upper bound (76) is determined from voltage and current measurements (74, 62); and determining a firing angle (44) for the thyristor bridge (28, 34), which firing angle (44) determines a switching time (70) of the thyristor arm (38), wherein the firing angle (44) is determined, such that it is less or equal to the upper bound (76).

    SWITCHING AN ELECTRICAL VOLTAGE SOURCE CONVERTER
    2.
    发明申请
    SWITCHING AN ELECTRICAL VOLTAGE SOURCE CONVERTER 审中-公开

    公开(公告)号：WO2018091682A1

    公开(公告)日：2018-05-24

    申请号：PCT/EP2017/079658

    申请日：2017-11-17

    Applicant: ABB SCHWEIZ AG

    Inventor： BESSELMANN, Thomas ,  BRUHA, Martin ,  PIEDER, Joerg ,  ALMER, Stefan

    IPC: H02P25/024 ,  H02P27/06 ,  H02M7/525

    Abstract: An electrical converter (12) with at least two output phases comprises a rectifier (28) and a thyristor-based inverter (34) interconnected by a DC link (30) with an inductor (32), wherein the thyristor-based inverter (34) comprises a half-bridge (40) with at least two half-bridge arms (42a, 42b) for each output phase of the electrical converter (12) and each arm (42a, 42b) being provided by a thyristor (38). A method for switching the electrical converter (12) comprises: cyclically switching the thyristors (38) of the inverter (34), such that at at least one time instant (58), two thyristors (38) of different half-bridge arms (42a, 42b) are switched on simultaneously, such that a pulse number, which determines at how many time instants (58) thyristors (38) of the inverter (34) are switched during one stator voltage period, is lower than the number of half-bridge arms (42a, 42b) of the inverter (34).

    METHOD OF CONTROLLING A COMPRESSOR SYSTEM DURING VOLTAGE DIPS
    3.
    发明申请
    METHOD OF CONTROLLING A COMPRESSOR SYSTEM DURING VOLTAGE DIPS 审中-公开
    电压DIPS期间压缩机系统的控制方法

    公开(公告)号：WO2016207165A1

    公开(公告)日：2016-12-29

    申请号：PCT/EP2016/064318

    申请日：2016-06-21

    Applicant: ABB SCHWEIZ AG

    Inventor： CORTINOVIS, Andrea ,  MERCANGOEZ, Mehmet ,  PIEDER, Joerg ,  VAN DE MOORTEL, Sture ,  BESSELMANN, Thomas

    IPC: H02P27/06 ,  F04D27/00 ,  H02H7/08

    CPC classification number: H02P27/06 ,  F04D27/001 ,  F04D27/0261 ,  F05D2260/821 ,  F05D2270/3061 ,  H02H7/08

    Abstract: A method of controlling a compressor system (10) comprises a gas compressor (32) and an electrical variable-speed drive (30) supplied by an electrical grid (36) and driving the gas compressor (32). A method of controlling the compressor system (10) comprises: detecting a voltage dip (12) in a grid voltage (V) supplied to the electrical drive (30) by comparing the grid voltage (V) with a voltage dip threshold; in the case, a voltage dip (12) is detected: assuming a future development (72) of the grid voltage (V); predicting a future development (84) of at least one process quantity (q) based on at least one process parameter (86) measured in the compressor system (10) and the assumption of the future development (72) of the grid voltage (V); providing the predicted future development (84) of the least one process quantity (q) to a protection system (88). The assumed future development (72) of the grid voltage (V) is based on a predefined depth and a predefined length of an average voltage dip, the predefined depth and the predefined length of the average voltage dip are determined online from a set of historical voltage dip cases, and the assumed future development (72) of the grid voltage (V) is based on an assumption of a persistence of the actual measured voltage.

    Abstract translation: 控制压缩机系统（10）的方法包括由电网（36）提供并驱动气体压缩机（32）的气体压缩机（32）和电动变速驱动器（30）。 控制压缩机系统（10）的方法包括：通过将电网电压（V）与电压骤降阈值进行比较来检测供给电驱动器（30）的电网电压（V） 在这种情况下，检测到电压骤降（12）：假定电网电压（V）的未来发展（72）; 基于在压缩机系统（10）中测量的至少一个过程参数（86）和电网电压（V）的未来发展（72）的假设来预测至少一个过程量（q）的未来发展（84） ）; 将至少一个处理量（q）的预测未来发展（84）提供给保护系统（88）。 电网电压（V）的假定的未来开发（72）基于预定义的深度和平均电压下降的预定长度，预定深度和平均电压下降的预定长度在线从一组历史 电压跌落情况下，电网电压（V）的假设未来发展（72）基于实际测量电压持续的假设。

    CONTROLLING A LOAD COMMUTATED CONVERTER DURING UNDERVOLTAGE
    6.
    发明公开
    CONTROLLING A LOAD COMMUTATED CONVERTER DURING UNDERVOLTAGE 审中-公开
    在欠压条件下控制负载交换转换器

    公开(公告)号：EP3231077A1

    公开(公告)日：2017-10-18

    申请号：EP15801732.7

    申请日：2015-11-23

    Applicant: ABB Schweiz AG

    Inventor： BESSELMANN, Thomas ,  ALMER, Stefan ,  WIIK, Jan ,  VAN DE MOORTEL, Sture

    IPC: H02M5/45 ,  H02H7/12 ,  H02M1/32

    Abstract: A load commutated converter interconnects an AC power grid with an AC load and comprises a grid-side converter, a DC link and a load-side converter. A method for controlling the load commutated converter comprises: determining a gridside firing angle for the grid-side converter; determining a load-side firing angle for the load-side converter; determining a grid voltage of the AC power grid; modifying the grid-side firing angle and/or the load-side firing angle based on the grid voltage, such that when an undervoltage condition in the AC power grid occurs, the operation of the load commutated converter is adapted to a change in the grid voltage; and applying the grid-side firing angle to the grid-side converter and the load-side firing angle to the load-side converter.

    Abstract translation: 负载换向转换器（10）将交流电网（18）与交流负载（20）互连并且包括电网侧转换器（12），直流链路（14）和负载侧转换器（16）。 一种用于控制负载换向转换器（10）的方法包括：确定网侧变流器（12）的网侧触发角（或）; 确定所述负载侧转换器（16）的负载侧触发角（β）; 确定AC电网（18）的电网电压（U L）; 基于电网电压（UL）修改电网侧触发角（或）和/或负载侧触发角（β），使得当AC电网（18）中出现欠压状况时， 负载换相转换器（10）适应于电网电压（UL）的变化; 并且将电网侧触发角（或）施加到电网侧转换器（12）并且将负载侧触发角（β）施加到负载侧转换器（16）。

    COMPRESSOR CONTROL DURING POWER SUPPLY SYSTEM DISTURBANCES
    7.
    发明公开
    COMPRESSOR CONTROL DURING POWER SUPPLY SYSTEM DISTURBANCES 审中-公开

    公开(公告)号：EP3339653A1

    公开(公告)日：2018-06-27

    申请号：EP16205629.5

    申请日：2016-12-21

    Applicant: ABB Schweiz AG

    Inventor： BESSELMANN, Thomas ,  CORTINOVIS, Andrea ,  MERCANGOEZ, Mehmet

    IPC: F04D25/16 ,  F04D27/02

    CPC classification number: F04D25/16 ,  F04D27/0261 ,  F04D27/0269 ,  F05D2270/09 ,  F05D2270/101 ,  F05D2270/335

    Abstract: The invention is related to a control arrangement for controlling a group of compressors (13A, 13B, 13C) in a compressor station (10), powered by an electrical power supply system (1), in case of disturbances in the electrical power supply system, each compressor being run by an electrical variable speed drive (23A, 23B, 23C) providing a drive torque for the compressor, the control arrangement comprising a main control unit (24) operable to determine a total available power for the variable speed drives during a disturbance in the electrical power supply system and select a number of drive torques for operating at least some of the compressors during the disturbance, where the power used for obtaining the selected drive torques is within the total available power.

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