Arrangement comprising an asynchronous machine and method for operating same
US-2021167705-A1 · Jun 3, 2021 · US
Method for stabilizing an AC voltage grid
US11817709B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11817709-B2 |
| Application number | US-202117464902-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2021 |
| Priority date | Sep 2, 2020 |
| Publication date | Nov 14, 2023 |
| Grant date | Nov 14, 2023 |
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- Title
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Abstract
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A configuration for stabilizing an AC voltage grid has a rotating phase-shifter that is configured to exchange reactive power with the AC voltage grid. The configuration is distinguished by a converter which has a grid side for connection to the AC voltage grid and a machine side for connection to the phase-shifter. A method is furthermore taught for stabilizing the AC voltage grid by way of the configuration.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for stabilizing an AC voltage grid, which comprises the steps of: providing a rotating phase-shifter that exchanges reactive power with the AC voltage grid during normal operation; connecting the rotating phase-shifter to the AC voltage grid by way of a converter upon identification of a predetermined frequency drop in the AC voltage grid; disconnecting the rotating phase-shifter from the AC voltage grid, upon identification of a frequency drop, by opening a switch and instead connecting the rotating phase-shifter to the AC voltage grid via the converter by further closing an input switch between the rotating phase-shifter and the converter; and feeding stored energy of the rotating phase-shifter into the AC voltage grid in a form of active power. 2. The method according to claim 1 , which further comprises performing frequency regulation at the converter so as to control an infeed of the active power. 3. The method according to claim 1 , which further comprises stepping up a converter voltage generated on a grid side by way of a main transformer that is disposed between the converter and the AC voltage grid.
Assignees
Inventors
Classifications
- H02J3/1885Primary
using rotating AC generators, e.g. synchronous generators · CPC title
using tap changing or phase shifting transformers · CPC title
using dynamo-electric machines coupled to flywheels · CPC title
Reactive power compensation · CPC title
Mechanical energy storage, e.g. flywheels or pressurised fluids · CPC title
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Frequently asked questions
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- What does patent US11817709B2 cover?
- A configuration for stabilizing an AC voltage grid has a rotating phase-shifter that is configured to exchange reactive power with the AC voltage grid. The configuration is distinguished by a converter which has a grid side for connection to the AC voltage grid and a machine side for connection to the phase-shifter. A method is furthermore taught for stabilizing the AC voltage grid by way of th…
- Who is the assignee on this patent?
- Siemens Energy Global Gmbh & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification H02J3/1885. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 14 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).