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Disconnection of a string carrying direct current power

US9401599B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9401599-B2
Application numberUS-201113315754-A
CountryUS
Kind codeB2
Filing dateDec 9, 2011
Priority dateDec 9, 2010
Publication dateJul 26, 2016
Grant dateJul 26, 2016

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A direct current (DC) power combiner operable to interconnect multiple interconnected photovoltaic strings is disclosed. The DC power combiner may include a device adapted for disconnecting at least one photovoltaic string from the multiple interconnected photovoltaic strings, each photovoltaic string connectible by a first and second DC power line. The device may include a differential current sensor adapted to measure differential current by comparing respective currents in the first and second DC power lines. A first switch is connected in series with the first DC power line. A control module is operatively attached to the differential current sensor and the first switch. The control module may be operable to open the first switch when the differential current sensor measures the differential current to be greater than a maximum allowed current differential, thereby disconnecting the photovoltaic string from the interconnected photovoltaic strings.

First claim

Opening claim text (preview).

The invention claimed is: 1. An apparatus comprising: a differential current sensor configured to measure differential current of at least one photovoltaic string of a plurality of photovoltaic strings, the differential current measured by comparing respective currents in a first direct current (DC) power line and a second DC power line that interconnect the at least one photovoltaic string to the plurality of photovoltaic strings; a first switch connected in series with the fir…

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Frequently asked questions

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What does patent US9401599B2 cover?
A direct current (DC) power combiner operable to interconnect multiple interconnected photovoltaic strings is disclosed. The DC power combiner may include a device adapted for disconnecting at least one photovoltaic string from the multiple interconnected photovoltaic strings, each photovoltaic string connectible by a first and second DC power line. The device may include a differential current…
Who is the assignee on this patent?
Har-Shai Liron, Zohar Alon, Galin Yoav, and 2 more
What technology area does this patent fall under?
Primary CPC classification H02H7/20. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Jul 26 2016 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).