Apparatus and method for switching a direct current
US-2016315467-A1 · Oct 27, 2016 · US
High voltage DC breaker apparatus
US8995097B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995097-B2 |
| Application number | US-201113697204-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 9, 2011 |
| Priority date | May 11, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
Official abstract text for this publication.
A high voltage DC breaker apparatus configured to interrupt a fault current occurring in a high voltage DC conductor comprises a mechanical interrupter, at least one semiconductor device connected in series with the interrupter, an arrester connected in parallel with the semiconductor device and an LC-circuit connected in parallel with the series connection of the semiconductor device and the interrupter. A control unit is configured to, upon detection of a fault current, control switching of the semiconductor device at a frequency adapted to the values of an inductance and a capacitance of the LC-circuit for charging the capacitance by the fault current while making the current through the interrupter oscillating with an increasing amplitude and the interrupter to open for having the mechanical contacts thereof separated when current zero-crossing is reached for obtaining interruption of the fault current through the interrupter.
First claim
Opening claim text (preview).
The invention claimed is: 1. A DC breaker apparatus capable of interrupting a fault current occurring in a high voltage DC conductor, said apparatus comprising at least one mechanical interrupter configured to be connected in series with said DC conductor, and an arrangement configured to obtain zero-crossing of the current through said interrupter upon occurrence of a fault current in said conductor, a control unit configured to control said arrangement and mechanical interru…
Assignees
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Classifications
- H01H33/596Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H02H3/087Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8995097B2 cover?
- A high voltage DC breaker apparatus configured to interrupt a fault current occurring in a high voltage DC conductor comprises a mechanical interrupter, at least one semiconductor device connected in series with the interrupter, an arrester connected in parallel with the semiconductor device and an LC-circuit connected in parallel with the series connection of the semiconductor device and the i…
- Who is the assignee on this patent?
- Skarby Per, Abb Technology Ag
- What technology area does this patent fall under?
- Primary CPC classification H01H33/596. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).