Apparatus and methods for soft grid interconnection of distributed generation assets

    公开(公告)号:US11362519B2

    公开(公告)日:2022-06-14

    申请号:US17048461

    申请日:2019-04-12

    摘要: A system includes a break-before-make automatic transfer switch (ATS) configured to selectively couple a utility grid and at least one distributed generator (e.g., a plurality of paralleled generators) to a load bus such that, in a state transition of the ATS, the utility grid and the at least one distributed generator are both disconnected from the load bus before the utility grid or the at least one distributed generator is connected to the load bus. The system further includes at least one converter configured to be coupled to the load bus and configured to provide power to the load bus during the state transition of the ATS.

    Electrical Systems and Methods Using High Capacity Local Bus Supported by Energy Storage

    公开(公告)号:US20230088380A1

    公开(公告)日:2023-03-23

    申请号:US17934229

    申请日:2022-09-22

    发明人: Davin Ojala

    IPC分类号: H02J3/38 H02J7/00 H02J3/32

    摘要: A system includes a first bus configured to be coupled to a grid and a second bus configured to be coupled to a load and/or a source. A first converter is configured to couple the first bus and the second bus and a second converter configured to couple an energy storage device to the second bus. The system further includes a controller configured to control the first and second converters such that the second converter controls a voltage and frequency on the second bus by energy transfer between the energy storage device and the second bus and the first converter transfers energy between the first bus and the second bus.

    Hybrid power generation system using generator with variable mechanical coupling and methods of operating the same

    公开(公告)号:US10862310B2

    公开(公告)日:2020-12-08

    申请号:US16300224

    申请日:2017-05-08

    摘要: A system includes a generator configured to be electrically coupled to a grid, a transmission configured to mechanically couple the generator to a prime mover, a converter circuit configured to be electrically coupled between the grid and an energy storage device, and a controller configured to control the converter circuit and the transmission. The controller may operate the converter circuit to source or sink power in response to a change on the grid meeting a criterion. The controller may be further configured to adjust a transmission ratio of the transmission based on a demand on the generator. The controller may also be configured to cause the transmission to mechanically decouple the generator from the prime mover while maintaining an electrical coupling of the generator to the grid so that the mechanically decoupled generator can contribute current to a fault on the grid.

    APPARATUS AND METHODS FOR SOFT GRID INTERCONNECTION OF DISTRIBUTED GENERATION ASSETS

    公开(公告)号:US20210083482A1

    公开(公告)日:2021-03-18

    申请号:US17048461

    申请日:2019-04-12

    摘要: A system includes a break-before-make automatic transfer switch (ATS) configured to selectively couple a utility grid and at least one distributed generator (e.g., a plurality of paralleled generators) to a load bus such that, in a state transition of the ATS, the utility grid and the at least one distributed generator are both disconnected from the load bus before the utility grid or the at least one distributed generator is connected to the load bus. The system further includes at least one converter configured to be coupled to the load bus and configured to provide power to the load bus during the state transition of the ATS.

    APPARATUS AND METHODS FOR REDUCING GENERATOR FREQUENCY VARIATION

    公开(公告)号:US20210036638A1

    公开(公告)日:2021-02-04

    申请号:US16968098

    申请日:2019-02-06

    IPC分类号: H02P9/02 H02J3/38 G05B19/042

    摘要: A system includes a generator configured to be electrically coupled to a grid, an engine configured to drive the generator, and a solid state generator coupled between the grid and an energy storage device. The system further includes a bias controller configured to detect a frequency of the grid and to responsively provide a bias signal to a speed controller of the engine. The bias controller may include a frequency bias controller configured to generate a frequency bias load sharing signal responsive to the detected frequency of the grid and a load sharing controller that receives the frequency bias load sharing signal and that generates the bias signal responsive to the load sharing signal.

    Island grid power supply apparatus and methods using energy storage for transient stabilization
    9.
    发明授权
    Island grid power supply apparatus and methods using energy storage for transient stabilization 有权
    岛电网供电装置及方法采用储能暂态稳定

    公开(公告)号:US09312699B2

    公开(公告)日:2016-04-12

    申请号:US13875603

    申请日:2013-05-02

    申请人: Earl Energy, LLC

    摘要: A system includes at least one generator coupled to an island grid, at least one energy storage unit and at least one converter coupled to the at least one energy storage unit and configured to be coupled to the island grid. The system further includes a control circuit configured to cause the at least one converter to transfer power between the at least one energy storage unit and the grid responsive to a change in a load on the island grid to maintain operation of the at least one generator at a predetermined operating point. The at least one generator may include a control system configured to match generator output to the load and the control circuit may be configured to maintain the control system of the at least one generator within a predetermined dynamic response capability limit responsive to the change in the load.

    摘要翻译: 一种系统包括耦合到岛状栅格的至少一个发生器,至少一个能量存储单元和耦合到所述至少一个能量存储单元并被配置为耦合到所述岛状栅极的至少一个转换器。 该系统还包括控制电路,其配置成使得至少一个转换器响应于岛上电网上的负载变化而在至少一个能量存储单元和电网之间传递功率,以将至少一个发电机的运行维持在 一个预定的工作点。 所述至少一个发生器可以包括配置成将发电机输出与负载相匹配的控制系统,并且控制电路可以被配置为响应于负载变化而将至少一个发电机的控制系统维持在预定的动态响应能力极限内 。

    Liquid cooling arrangement of an inductive component and a method for manufacturing an inductive component
    10.
    发明授权
    Liquid cooling arrangement of an inductive component and a method for manufacturing an inductive component 有权
    电感元件的液体冷却装置和用于制造电感元件的方法

    公开(公告)号:US09251947B2

    公开(公告)日:2016-02-02

    申请号:US13381066

    申请日:2010-07-02

    申请人: Jarkko Salomäki

    发明人: Jarkko Salomäki

    摘要: The object of the invention is a liquid cooling arrangement of an inductive component and a method for manufacturing the inductive component. The inductive component comprises at least a core (1) assembled from separate structural elements (7, 7a, 7b) as well as liquid cooling ducts (8a) integrated into the core (1) for the purpose of liquid cooling and a winding structure (3) around the core (1). The core (1) is assembled from subassemblies formed from structural elements (7, 7a, 7b), which subassemblies are separately composed of e.g. vertical pillars (35), a top horizontal beam (36) and a bottom horizontal beam (37), and cooling liquid ducts (8a) or cooling liquid pipes (10) are placed in at least a part of the subassemblies before final assembly of the core (1).

    摘要翻译: 本发明的目的是一种电感元件的液体冷却装置和用于制造电感元件的方法。 感应组件包括至少一个由分离的结构元件(7,7a,7b)组装的芯体(1)以及集成到芯体(1)中的用于液体冷却的液体冷却管道(8a)和绕组结构 3)围绕核心(1)。 芯部(1)由从由结构元件(7,7a,7b)形成的子组件组装,该组件分别由例如组件构成。 垂直柱(35),顶部水平梁(36)和底部水平梁(37)以及冷却液体管道(8a)或冷却液体管道(10)放置在子组件的至少一部分中,最后组装 核心(1)。