公开(公告)号：US20150333504A1

公开(公告)日：2015-11-19

申请号：US14278832

申请日：2014-05-15

Applicant: ABB Technology AG

Inventor： Li Qi ,  Jiaqi Liang ,  Jiuping Pan

IPC: H02H7/26

CPC classification number: H02H3/087 ,  H02H3/18 ,  H02H7/268

Abstract: A protection device includes a diode having its forward direction in a normal power flow of a region of a DC collection system, a first switch in parallel with the diode, a second switch in series with the diode and a control unit for controlling the switches. The first switch can be opened so that current can flow through the diode in the forward direction without the first switch bypassing the diode, and closed if no current is flowing through the diode in the forward direction and power is needed upstream of the diode. The second switch can be closed so that current can flow through the diode in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode in the forward direction due to a fault in a DC feeder to which the device is coupled.

Abstract translation: 一种保护装置包括二极管，其二极管在直流回路系统的区域的正常功率流中具有正向，与二极管并联的第一开关，与二极管串联的第二开关和用于控制开关的控制单元。 可以打开第一开关，使得电流可以在正向方向上流过二极管而不使第一开关旁路二极管，并且如果没有电流正向流过二极管并且在二极管的上游需要功率，则闭合。 可以关闭第二开关，使得电流可以正向流过二极管，直到DC收集系统的AC电网接口，如果没有电流由于DC中的故障而在正向流过二极管，则开路 馈送器，设备耦合到该馈线。

公开(公告)号：US20160352251A1

公开(公告)日：2016-12-01

申请号：US14726587

申请日：2015-05-31

Applicant: ABB Technology AG

Inventor： Jun Li ,  Jing Xu ,  Li Qi

IPC: H02M7/487

CPC classification number: H02M7/487 ,  H02M2001/325

Abstract: Five or more level active neutral-point-clamped (ANPC) converters and operating methods thereof are disclosed. The five or more level ANPC converters may include upper and lower DC links, a neutral point, a converter output, a plurality of switching devices including upper and lower active neutral clamp switching devices, and at least one two-level cell connected to the output. Each of the two-level cells may include a floating capacitor and a bidirectional switch. In some examples, switches may be connected between the upper and lower DC links and the corresponding upper and lower active neutral clamp switching devices, and circuit breaking elements may be connected between the neutral point and the upper and lower active neutral clamp switching devices. In some examples, a bidirectional switch may be connected in parallel with each of the plurality of switching devices other than the upper and lower active neutral clamp switching devices.

Abstract translation: 公开了五种或更多级的有源中性点钳位（ANPC）转换器及其操作方法。 五个或更多个电平ANPC转换器可以包括上部和下部DC链路，中性点，转换器输出，包括上部和下部有源中性钳位切换装置的多个开关装置，以及连接到输出端的至少一个二级电池 。 两电平单元中的每一个可以包括浮动电容器和双向开关。 在一些示例中，开关可以连接在上部和下部DC链路和相应的上部和下部有源中性夹紧开关装置之间，并且断路元件可以连接在中性点和上部和下部有源中性夹紧开关装置之间。 在一些示例中，双向开关可以与除了上下有源中性钳位开关装置之外的多个开关装置中的每一个并联连接。

公开(公告)号：US20150270704A1

公开(公告)日：2015-09-24

申请号：US14255674

申请日：2014-04-17

Applicant: ABB Technology AG

Inventor： Li Qi ,  Jiuping Pan

IPC: H02H7/26

CPC classification number: H02H7/268 ,  H02H3/087 ,  H02H3/0935 ,  H02H7/28

Abstract: While transient current magnitudes at different locations within a DC distribution system themselves are not a reliable indicator of fault location, it is recognized herein that accumulating energy or pseudo energy values provides a reliable basis for tripping the protection element at a fault location. Thus, in one aspect of the teachings herein, pseudo energy values are accumulated independently during a fault condition, for each of one or more protected branch circuits and the protection element for each such branch circuit is tripped responsive to the accumulated pseudo energy values reaching a defined pseudo energy threshold. The pseudo energy thresholds are defined so that the protection element in the branch circuit where the fault is located will trip first.

Abstract translation: 虽然在DC分配系统本身内的不同位置处的瞬态电流幅度不是故障定位的可靠指标，但是这里可以认识到，累积能量或伪能量值为故障位置处的保护元件跳闸提供了可靠的依据。 因此，在本文的教导的一个方面，对于一个或多个受保护分支电路中的每一个，在故障状态期间独立地累加伪能量值，并且对于每个这样的分支电路的保护元件响应于累积的伪能量值达到 定义的伪能量阈值。 定义伪能量阈值，使得故障所在的分支电路中的保护元件首先跳闸。

公开(公告)号：US09742331B2

公开(公告)日：2017-08-22

申请号：US14856012

申请日：2015-09-16

Applicant: ABB Technology AG

Inventor： Jiaqi Liang ,  Zhiguo Pan ,  Li Qi ,  Anil Kondabathini

IPC: H02K7/18 ,  F02B63/04 ,  H02P9/00

CPC classification number: H02P9/007

Abstract: A generation and distribution system includes an adjustable-speed prime mover and a doubly-fed asynchronous alternating-current (AC) generator driven by the prime mover and having a first poly-phase circuit, e.g., a stator, and a second poly-phase circuit, e.g., a rotor. The system further includes a first AC bus electrically coupled to the first poly-phase circuit configured to deliver AC power at a first AC voltage to multiple loads, and a second AC bus connected to the second poly-phase circuit configured to deliver AC power at a second AC voltage to another group of loads, the second AC voltage being lower than the first. The system includes a poly-phase transformer having first windings electrically coupled to the first AC bus and having second windings electrically coupled to the second AC bus, and a poly-phase AC-to-AC electronic converter circuit electrically coupled between the second poly-phase circuit and the second AC bus.

公开(公告)号：US09419428B2

公开(公告)日：2016-08-16

申请号：US14278832

申请日：2014-05-15

Applicant: ABB Technology AG

Inventor： Li Qi ,  Jiaqi Liang ,  Jiuping Pan

IPC: H02H7/26 ,  H02H3/087 ,  H02H3/18

CPC classification number: H02H3/087 ,  H02H3/18 ,  H02H7/268

Abstract: A protection device includes a diode having its forward direction in a normal power flow of a region of a DC collection system, a first switch in parallel with the diode, a second switch in series with the diode and a control unit for controlling the switches. The first switch can be opened so that current can flow through the diode in the forward direction without the first switch bypassing the diode, and closed if no current is flowing through the diode in the forward direction and power is needed upstream of the diode. The second switch can be closed so that current can flow through the diode in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode in the forward direction due to a fault in a DC feeder to which the device is coupled.

Abstract translation: 一种保护装置包括二极管，其二极管在直流回路系统的区域的正常功率流中具有正向，与二极管并联的第一开关，与二极管串联的第二开关和用于控制开关的控制单元。 可以打开第一开关，使得电流可以在正向方向上流过二极管而不使第一开关旁路二极管，并且如果没有电流正向流过二极管并且在二极管的上游需要功率，则闭合。 可以关闭第二开关，使得电流可以正向流过二极管，直到DC收集系统的AC电网接口，如果没有电流由于DC中的故障而在正向流过二极管，则开路 馈送器，设备耦合到该馈线。

公开(公告)号：US10483758B2

公开(公告)日：2019-11-19

申请号：US14150414

申请日：2014-01-08

Applicant: ABB Technology AG

Inventor： Jiaqi Liang ,  Li Qi

IPC: H02J1/10 ,  H02J1/14 ,  H02J7/34

Abstract: A control apparatus and corresponding control method use per-unit filtering in a plurality of power-sharing controllers, to obtain a power-sharing command signal for respective ones among a plurality of different energy storage units in a hybrid energy storage system. The hybrid energy storage system includes two or more types of energy storage units and the power-sharing command signal for each energy storage unit is obtained by filtering an input signal using a filter having a filter response that is tailored to the energy storage characteristics of the energy storage unit. The input signal reflects load variations on the electrical grid and may be locally generated or provided by a remote node. While the power-sharing control loops used for each energy storage unit advantageously may be the same in terms of architecture and implementation, each loop uses tailored, dedicated filtering and, possibly, individualized values of one or more other control parameters.

公开(公告)号：US20160079898A1

公开(公告)日：2016-03-17

申请号：US14856012

申请日：2015-09-16

Applicant: ABB Technology AG

Inventor： Jiaqi Liang ,  Zhiguo Pan ,  Li Qi ,  Anil Kondabathini

IPC: H02P9/00 ,  H02K13/00

CPC classification number: H02P9/007

Abstract: A generation and distribution system comprises an adjustable-speed prime mover and a doubly-fed asynchronous alternating-current (AC) generator driven by the prime mover and having a first poly-phase circuit, e.g., a stator, and a second poly-phase circuit, e.g., a rotor. The system further includes a first AC bus electrically coupled to the first poly-phase circuit and configured to deliver AC power at a first AC voltage to multiple loads, and a second AC bus configured to deliver AC power at a second AC voltage to another group of loads, the second AC voltage being lower than the first. Finally, the system includes a poly-phase transformer having first windings electrically coupled to the first poly-phase circuit and the first AC bus and having second windings electrically coupled to the second AC bus, and a poly-phase AC-to-AC electronic converter circuit electrically coupled between the second poly-phase circuit and the second AC bus.

Abstract translation: 发电和配电系统包括可调速原动机和由原动机驱动的双馈异步交流（AC）发电机，并具有第一多相电路，例如定子和第二多相 电路，例如转子。 该系统还包括电耦合到第一多相电路并被配置为以第一AC电压向多个负载递送AC电力的第一AC总线，以及被配置为将第二AC电压的AC电力传递给另一组的第二AC总线 的负载，第二个交流电压低于第一个。 最后，该系统包括多相变压器，其具有电耦合到第一多相电路和第一AC总线的第一绕组，并具有电耦合到第二AC总线的第二绕组，以及多相AC至AC电子 转换器电路电耦合在第二多相电路和第二AC总线之间。

公开(公告)号：US09748762B2

公开(公告)日：2017-08-29

申请号：US14255674

申请日：2014-04-17

Applicant: ABB Technology AG

Inventor： Li Qi ,  Jiuping Pan

IPC: H02H7/26 ,  H02H3/087 ,  H02H3/093 ,  H02H7/28

CPC classification number: H02H7/268 ,  H02H3/087 ,  H02H3/0935 ,  H02H7/28

Abstract: While transient current magnitudes at different locations within a DC distribution system themselves are not a reliable indicator of fault location, it is recognized herein that accumulating energy or pseudo energy values provides a reliable basis for tripping the protection element at a fault location. Thus, in one aspect of the teachings herein, pseudo energy values are accumulated independently during a fault condition, for each of one or more protected branch circuits and the protection element for each such branch circuit is tripped responsive to the accumulated pseudo energy values reaching a defined pseudo energy threshold. The pseudo energy thresholds are defined so that the protection element in the branch circuit where the fault is located will trip first.

公开(公告)号：US20150349687A1

公开(公告)日：2015-12-03

申请号：US14291176

申请日：2014-05-30

Applicant: ABB Technology AG

Inventor： Jiaqi Liang ,  Li Qi ,  Zhiguo Pan

IPC: H02P9/00

CPC classification number: H02P9/007 ,  H02J3/38 ,  H02J4/00 ,  H02J2003/388 ,  H02P2207/076

Abstract: A dual-voltage power generation system includes a prime mover configured for adjustable speed operation and a doubly-fed induction generator driven by the prime mover and including a multi-phase stator winding and a multi-phase rotor winding. A first output terminal of the dual-voltage power generation system is electrically connected to the multi-phase stator winding, and a second output terminal is electrically connected to the multi-phase rotor winding. The dual-voltage power generation system further includes a first converter having an AC side connected to one of the multi-phase windings and an AC or DC side connected to one of the output terminals. The multi-phase stator winding has a different turns ratio than the multi-phase rotor winding and the first output terminal is electrically isolated from the second output terminal so that the generator has two isolated power supply outputs at different voltage levels in a first configuration.

Abstract translation: 双电压发电系统包括配置用于可调速运行的原动机和由原动机驱动并包括多相定子绕组和多相转子绕组的双馈感应发电机。 双电压发电系统的第一输出端子电连接到多相定子绕组，并且第二输出端子电连接到多相转子绕组。 双电压发电系统还包括具有连接到多相绕组之一的AC侧的第一转换器和连接到输出端之一的AC或DC侧。 多相定子绕组具有与多相转子绕组不同的匝数比，并且第一输出端子与第二输出端子电隔离，使得发生器在第一配置中具有两个不同电压电平的隔离电源输出。