Systems and methods of detecting ground faults in energy storage and/or generation systems that employ DC/AC power conversion systems
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United States of America Patent
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Mar 21, 2017
Grant Date -
Aug 25, 2016
app pub date -
Feb 19, 2015
filing date -
Feb 19, 2015
priority date (Note) -
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Abstract
Systems and methods of detecting ground faults in energy storage and/or generation systems that can detect ground faults on the DC and/or AC side of an energy storage/generation system, and generate warning signals and/or shutdown at least part of the system upon detection of such ground faults. The systems and methods can monitor levels of DC voltages and amplitudes of AC voltages occurring on the positive and negative side of a DC bus with respect to ground on the DC side of the energy storage and/or generation system, and process the monitored DC voltage levels and AC voltage amplitudes to detect a ground fault. Having detected such a ground fault, the systems and methods can generate a warning signal and/or shutdown at least part of the system, for example, by disconnecting a DC energy system from the DC bus, and/or by disabling a DC-to-AC bidirectional inverter included in the system.
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Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 21, 2028 |
