Single-pole switching unit for limiting the energy flow in a series circuit comprising photovoltaic modules, photovoltaic module arrangement and photovoltaic module
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United States of America Patent
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May 2, 2017
Grant Date -
Nov 28, 2013
app pub date -
May 2, 2013
filing date -
May 22, 2012
priority date (Note) -
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Abstract
In various embodiments, a single-pole switching unit for limiting the energy flow in a series circuit having photovoltaic modules by a pulsating control signal present on at least one DC line is provided. The switching unit may include: a switching element, which is designed to reduce the current flow in the at least one DC line of the photovoltaic modules; a transmission element, which is designed to couple out an electrical control signal present on the DC line and to control the switching element merely with the energy of the coupled-out control signal; and a coupling element, which is arranged in parallel with the switching element and which conducts the control signal through the switching unit when the switching element is nonconducting.
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