Energy management system
AssigneeEnphase Energy, Inc.
InventorMichael J. Harrison
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Abstract
An apparatus configured for use with a microinverter of an energy management system is provided. For example, apparatus can comprise a cascaded current transformer configuration comprising a first current transformer having a first primary winding configured to couple to a secondary winding of a power transformer of the microinverter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the microinverter.
Claims13
An apparatus configured for use with a microinverter of an energy management system, comprising:
- a cascaded current transformer configuration comprising a first current transformer having a first primary winding coupled to a secondary winding of a power transformer that couples to a cycloconverter of the microinverter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the microinverter.
An energy management system, comprising:
- a DC power source connected to a power converter to convert DC power from the DC power source to grid-compliant AC power that is coupled to an AC bus;
- and
- a cascaded current transformer configuration comprising a first current transformer having a first primary winding coupled to a secondary winding of a power transformer that couples to a cycloconverter of the power converter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the power converter.
An apparatus configured for use with a microinverter of an energy management system, comprising:
- a cascaded current transformer configuration comprising a first current transformer having a first primary winding configured to couple to a secondary winding of a power transformer of the microinverter and having a first secondary winding coupled to a second primary winding of a second current transformer having a second secondary winding coupled to a measurement device configured to measure a current of the microinverter,
- wherein the microinverter comprises at least two switches connected to the secondary winding of the power transformer, and wherein the at least two switches are Gallium Nitride (GaN) power semiconductor switches, and
- wherein the measurement device is an ADC chip.
Dependencies are inferred from the claim text.