Power supply device for sub-module controller of MMC converter
US-10177652-B2 · Jan 8, 2019 · US
Redundancy control method of MMC for HVDC
US10461630B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10461630-B2 |
| Application number | US-201616067466-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 22, 2016 |
| Priority date | Dec 31, 2015 |
| Publication date | Oct 29, 2019 |
| Grant date | Oct 29, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention provides a method of MMC for HVDC. According to the present invention, there is provided a redundancy control method of an MMC for HVDC, wherein the MMC includes multiple converter arms each has multiple submodules in operation and redundancy modules for spares, the method including: checking whether a breakdown of a submodule in operation of a first converter arm among the multiple converter arms occurs in a case where the all redundancy modules of the first converter arm are applied in operation; and lowering an output voltage of each submodule of other converter arms in such a manner that a DC link voltage of each of the other converter arms is controlled to be equal to a DC link voltage of the first converter arm when the breakdown of the submodule of the first converter arm occurs.
First claim
Opening claim text (preview).
The invention claimed is: 1. A redundancy control method of a modular multilevel converter (MMC) for high voltage direct current (HVDC), wherein the MMC has multiple converter arms each including multiple submodules and redundancy submodules, the method comprising: checking whether a breakdown of a submodule in operation of a first converter arm among the multiple converter arms occurs in a case where all of the redundancy submodules of the first converter arm are applied and in operation; and controlling a DC link voltage supplied to the multiple converter arms to be equal to a sum of output voltages of the submodules of the first converter arm except for the submodule which has broken down and lowering an output voltage of each submodule of the other converter arms according to the DC link voltage when the breakdown of the submodule in operation of the first converter arm occurs, wherein a number of submodules operable in the first converter arm except for the submodule which has broken down is different from a number of submodules operable in each of the other converter arms, and wherein each of the output voltages of the operable submodules of the first converter arm is different from each of the output voltages of the operable submodules of each of the other converter arms. 2. The method of claim 1 , wherein the submodules of the first converter arm except for the submodule which has broken down are controlled to output a rated output voltage. 3. The method of claim 1 , wherein the output voltage of each submodule of the other converter arms is equal to a value obtained by multiplying an original rated output voltage of each submodule and a value obtained by dividing the DC link voltage by a rated DC link voltage of the other converter arms. 4. The method of claim 1 , wherein the multiple submodules in operation included in each of the converter arms output same voltages, respectively.
Assignees
Inventors
Classifications
- H02M1/32Primary
Means for protecting converters other than automatic disconnection · CPC title
including plural semiconductor devices as final control devices for a single load · CPC title
Arrangements for transfer of electric power between AC networks via high-voltage DC [HVDC] links; Arrangements for transfer of electric power between generators and networks via HVDC links · CPC title
Combination of the output voltage waveforms of a plurality of converters · CPC title
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10461630B2 cover?
- The present invention provides a method of MMC for HVDC. According to the present invention, there is provided a redundancy control method of an MMC for HVDC, wherein the MMC includes multiple converter arms each has multiple submodules in operation and redundancy modules for spares, the method including: checking whether a breakdown of a submodule in operation of a first converter arm among th…
- Who is the assignee on this patent?
- Hyosung Heavy Ind Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M1/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 29 2019 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).