公开(公告)号：EP3192162A1

公开(公告)日：2017-07-19

申请号：EP15763484.1

申请日：2015-09-03

Applicant: Vestas Wind Systems A/S

Inventor： PEDERSEN, Tune

IPC: H02M7/493

CPC classification number: H02K7/183 ,  H01F27/28 ,  H01F38/00 ,  H02M5/458 ,  H02M7/493

Abstract: When performing interleaved switching, a power generation system may include chokes for filtering out a high-frequency ripple. However, because the chokes are interconnected, a common mode current can flow between the different parallel converters. Instead of connecting all the outputs of a parallel converter to the same choke, the same phase of each of the parallel converters is sent to one of the chokes. For example, the first phase signals are sent to a first choke, the second phase signals are sent to a second choke, and so forth. By doing so, air gaps in the chokes can be manipulated in order to provide a different inductance for the common mode current than a grid current. For example, the air gaps may be arranged such that the inductance corresponding to the common mode current is greater than the inductance corresponding to the grid current.

Abstract translation: 当执行交错切换时，发电系统可以包括用于滤除高频纹波的扼流圈。 但是，由于扼流圈互连，所以在不同的并联转换器之间可以流过共模电流。 不是将并联转换器的所有输出连接到相同的扼流圈，而是将每个并联转换器的相同相位发送到其中一个扼流圈。 例如，第一相位信号被发送到第一扼流圈，第二相位信号被发送到第二扼流圈，等等。 通过这样做，可以操纵扼流圈中的气隙，以便为共模电流提供不同于电网电流的电感。 例如，气隙可以被布置为使得对应于共模电流的电感大于对应于电网电流的电感。

公开(公告)号：EP2963285B1

公开(公告)日：2017-12-13

申请号：EP15173137.9

申请日：2015-06-22

Applicant: Vestas Wind Systems A/S

Inventor： PEDERSEN, Tune

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/042 ,  F03D7/0224 ,  F03D7/0284 ,  F03D7/048 ,  F03D9/257 ,  F05B2270/1033 ,  F05B2270/337 ,  Y02E10/723

Abstract: A method for controlling operation of a wind turbine coupled to a power grid is disclosed. The power grid is monitored in order to determine whether or not there is a match between a demand for energy defined by power consumers connected to the power grid and supply of energy from power producers connected to the power grid. For instance, the price of energy may be monitored. In the case that the supply of energy from power producers exceeds the demand for energy, and a deficiency between the demand for energy and the supply of energy exceeds a first threshold value, the energy flow through the generator is reversed, thereby causing the generator to consume power received from the power grid. Thereby the deficiency can be reduced and the power grid can be stabilised.

公开(公告)号：EP3780366A1

公开(公告)日：2021-02-17

申请号：EP20190429.9

申请日：2020-08-11

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： BIRIS, Ciprian ,  GERÇEK, Cem Özgür ,  HELLE, Lars ,  DOAN, Duy Duc ,  PEDERSEN, Tune

IPC: H02M1/32

Abstract: This disclosure proposes a topology that integrates a DC chopper into the Modular Multilevel Converter (MMC) cells of a power converter. The integrated DC chopper may include chopper resistors that may also be advantageously integrated into a heat sink for a power module comprising at least the power transistors of the MMC cell. Embodiments herein also describe a method for using an MMC cell's IGBTs and chopper resistors for providing a safe discharge of both cell capacitors and DC-link capacitors in different operating conditions.

公开(公告)号：EP3314715B1

公开(公告)日：2019-11-06

申请号：EP16728612.9

申请日：2016-06-08

Applicant: Vestas Wind Systems A/S

Inventor： ABEYASEKERA, Tusitha ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  HELLE, Lars ,  PEDERSEN, Tune ,  NIELSEN, John Godsk ,  ANDERSEN, Søren

IPC: H02J3/38 ,  F03D9/00 ,  H02J3/42 ,  H02H9/00 ,  H02H7/26 ,  F03D9/25

公开(公告)号：EP3314715A1

公开(公告)日：2018-05-02

申请号：EP16728612.9

申请日：2016-06-08

Applicant: Vestas Wind Systems A/S

Inventor： ABEYASEKERA, Tusitha ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  HELLE, Lars ,  PEDERSEN, Tune ,  NIELSEN, John Godsk ,  ANDERSEN, Søren

IPC: H02J3/38 ,  F03D9/00 ,  H02J3/42 ,  H02H9/00

Abstract: A method, converter arrangement, and controller are disclosed for connecting an output of a converter with an electrical grid to control inrush currents into a grid filter assembly connected with the output of the converter, the electrical grid carrying an alternating current (AC) signal having one or more phases. The method includes determining a voltage of the AC signal and operating, after pre-charging a direct current (DC) link of the converter to a predetermined voltage, the converter using open-loop voltage control to produce an AC output signal that substantially matches the AC signal of the electrical grid. The open-loop voltage control is based on the determined voltage of the AC signal. The method further includes closing, after a predetermined amount of time of operating the converter using the open-loop voltage control, a switching device to thereby connect the output of the converter with the electrical grid.

公开(公告)号：EP2963285A1

公开(公告)日：2016-01-06

申请号：EP15173137.9

申请日：2015-06-22

Applicant: Vestas Wind Systems A/S

Inventor： PEDERSEN, Tune

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/042 ,  F03D7/0224 ,  F03D7/0284 ,  F03D7/048 ,  F03D9/257 ,  F05B2270/1033 ,  F05B2270/337 ,  Y02E10/723

Abstract: A method for controlling operation of a wind turbine coupled to a power grid is disclosed. The power grid is monitored in order to determine whether or not there is a match between a demand for energy defined by power consumers connected to the power grid and supply of energy from power producers connected to the power grid. For instance, the price of energy may be monitored. In the case that the supply of energy from power producers exceeds the demand for energy, and a deficiency between the demand for energy and the supply of energy exceeds a first threshold value, the energy flow through the generator is reversed, thereby causing the generator to consume power received from the power grid. Thereby the deficiency can be reduced and the power grid can be stabilised.

Abstract translation: 公开了一种用于控制耦合到电网的风力涡轮机的操作的方法。 对电网进行监控，以确定连接到电网的电力用户定义的能量需求与连接到电网的电力供应商的能源供应之间是否存在匹配。 例如，可以监测能源的价格。 在发电厂的能源供应超过能源需求的情况下，能量需求与能源供应之间的不足超过第一阈值时，通过发电机的能量流量相反，从而使发电机 消耗从电网接收的电力。 从而可以减少不足，并且能够稳定电力网。