System, method, and apparatus for powering equipment during a low voltage event
AssigneeAdvanced Energy Industries, Inc.
InventorJoshua Brian Pankratz
Life of this patent
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Abstract
Low voltage ride through systems, methods, and apparatus are disclosed. An exemplary method includes applying real power from a photovoltaic array to an AC grid with an inverter, detecting a sag in the voltage in the AC grid, and responsive to the sag in the voltage in the AC grid, power from the photovoltaic array is utilized to provide power to at least one inverter-related component. When the sag in the voltage has abated, real power from the photovoltaic array is applied once again to the AC grid.
Claims21
A photovoltaic inverter with low-voltage-ride-through capability comprising:
- an input to couple to a photovoltaic array;
- an output to couple to an AC grid;
- an inverter portion to convert a DC voltage at the input to an AC voltage at the output;
- at least one management component to manage at least one aspect of the inverter portion;
- and
- a low voltage ride through component including a power conversion component that utilizes, when there is a voltage sag in the AC grid, power from the photovoltaic array to apply power to the at least one management component.
A method for powering components of an inverter during a low voltage event, the method comprising:
- applying real power from a photovoltaic array to an AC grid with the inverter;
- detecting a sag in the voltage in the AC grid;
- utilizing, responsive to the sag in the voltage in the AC grid, power from the photovoltaic array to provide power to at least one inverter-related component;
- and
- applying, when the sag in the voltage has abated, the real power from the photovoltaic array to the AC grid with the inverter.
A photovoltaic inverter with low-voltage-ride-through capability comprising:
- means for applying real power from a photovoltaic array to an AC grid with the inverter;
- means for detecting a sag in the voltage in the AC grid;
- means for utilizing, responsive to the sag in the voltage in the AC grid, power from the photovoltaic array to provide power to at least one inverter-related component;
- and
- means for applying, when the sag in the voltage has abated, the real power from the photovoltaic array to the AC grid with the inverter.
Dependencies are inferred from the claim text.