SYSTEM AND METHOD FOR SYNCHRONIZED RAPID SHUTDOWN OF ELECTRICAL DEVICES
First Claim
1. A system comprising:
- a plurality of circuits, each circuit comprising;
an electrical device, anda control circuit configured to turn the electrical device on and off, each control circuit comprising an isolation transformer;
an electrical source providing a control current;
a switching device configured to switch on and off; and
conductors configured to connect the isolation transformers of the plurality of circuits, the electrical source, and the switching device in series to form a current loop, the current loop transmitting the control current;
wherein when the switching device is switched from on to off, the isolation transformers of the plurality of circuits stop receiving the control current, thereby causing the electrical devices of the plurality of circuits to shut off simultaneously.
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Accused Products
Abstract
In one embodiment, the invention can be a system for simultaneously shutting down electrical device, the system including a plurality of circuits, each circuit including an electrical device, and a control circuit configured to turn the electrical device on and off, each control circuit comprising an isolation transformer; an electrical source providing a control current; a switching device configured to switch on and off; and conductors configured to connect the isolation transformers of the plurality of circuits, the electrical source, and the switching device in series to form a current loop, the current loop transmitting the control current; wherein when the switching device is switched from on to off, the isolation transformers of the plurality of circuits stop receiving the control current, thereby causing the electrical devices of the plurality of circuits to shut off simultaneously.
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Citations
21 Claims
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1. A system comprising:
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a plurality of circuits, each circuit comprising; an electrical device, and a control circuit configured to turn the electrical device on and off, each control circuit comprising an isolation transformer; an electrical source providing a control current; a switching device configured to switch on and off; and conductors configured to connect the isolation transformers of the plurality of circuits, the electrical source, and the switching device in series to form a current loop, the current loop transmitting the control current; wherein when the switching device is switched from on to off, the isolation transformers of the plurality of circuits stop receiving the control current, thereby causing the electrical devices of the plurality of circuits to shut off simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A circuit comprising:
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a solar photovoltaic module comprising photovoltaic cells; and a control circuit configured to turn the solar photovoltaic module on and off, the control circuit comprising a depletion mode MOSFET operably coupled to the solar photovoltaic module and to a switching device, the depletion mode MOSFET having an on state and an off state; wherein, upon the switching device switching from a first state to a second state, the depletion mode MOSFET switches to the on state to short the photovoltaic cells, thereby shutting off the solar photovoltaic module. - View Dependent Claims (19)
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20. A method of shutting down a plurality of solar modules simultaneously, the method comprising:
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providing a plurality of circuits, each circuit comprising; a solar photovoltaic module, and a control circuit configured to turn the solar photovoltaic module on and off, each control circuit comprising an isolation transformer; providing an electrical source configured to provide a control current; providing a switching device configured to switch on and off; and electrically connecting the isolation transformers, th electrical source, and the switching device in series to form a current loop, the current loop transmitting the control current; and switching the switching device from on to off to stop the transmission of the control current in the current loop.
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21-32. -32. (canceled)
Specification