公开(公告)号：WO2021110532A1

公开(公告)日：2021-06-10

申请号：PCT/EP2020/083499

申请日：2020-11-26

Applicant: ABB SCHWEIZ AG

Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

Abstract: The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.

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).

公开(公告)号：EP3968484A1

公开(公告)日：2022-03-16

申请号：EP20195279.3

申请日：2020-09-09

Applicant: ABB Schweiz AG ,  Hitachi Energy Switzerland AG

Inventor： ALMER, Stefan ,  SCHWEIZER, Mario

IPC: H02J3/38 ,  H02J3/48

Abstract: The present invention relates to a method for controlling an electrical converter for use in an AC power grid, the method comprising: calculating a rotation angle of a voltage waveform of an AC output voltage of the converter based on an active power of the converter, a reference active power of the converter and a frequency deviation of the voltage of the AC power grid from a nominal grid frequency of the AC power grid; and controlling the electrical converter to output an AC output voltage having the calculated rotation angle. The present invention also relates to a respective apparatus for controlling an electrical converter for use in an AC power grid.

公开(公告)号：EP4070428A1

公开(公告)日：2022-10-12

申请号：EP20812332.3

申请日：2020-11-26

Applicant: ABB SCHWEIZ AG ,  Hitachi Energy Switzerland AG

Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

公开(公告)号：EP3832829A1

公开(公告)日：2021-06-09

申请号：EP19212967.4

申请日：2019-12-02

Applicant: ABB Schweiz AG

Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

Abstract: The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.

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）。

公开(公告)号：EP3231077B1

公开(公告)日：2020-04-01

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

公开(公告)号：EP3185407A1

公开(公告)日：2017-06-28

申请号：EP15202616.7

申请日：2015-12-23

Applicant: ABB Schweiz AG

Inventor： RABONI, Pietro ,  MARTINI, David ,  MASTELLONE, Silvia ,  ALMER, Stefan

IPC: H02M1/32 ,  H02M7/5387 ,  H02J3/38

CPC classification number: H02M7/44 ,  H02J3/383 ,  H02J3/385 ,  H02M1/14 ,  H02M1/32 ,  H02M7/5387 ,  Y02E10/563 ,  Y02E10/58

Abstract: DC/AC converter comprising a new control device and method for managing inrush current transients during operation without requiring additional external devices or emergency operating modes forcing the DC/AC converter to shut down. The present invention is particularly, but not exclusively, aimed at grid connected DC/AC converters, often subject to inrush current phenomena due to perturbations in the grid.

Abstract translation: DC / AC转换器包括用于管理操作期间的浪涌电流瞬变的新控制装置和方法，而不需要额外的外部装置或紧急操作模式，迫使DC / AC转换器关闭。 本发明特别但非唯一地针对电网连接的DC / AC转换器，经常受到由于电网中的扰动引起的浪涌电流现象的影响。