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US 12,732,118 B2Granted
Power conversion apparatus having multi-level structure
AssigneeLG Innotek Co., Ltd.
InventorsKwang Soon Jung, Jeong Heum Park, Soo Hong Kim
Life of this patent
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Abstract
A power conversion apparatus according to an embodiment of the present invention comprises: a plurality of converters connected to a plurality of cell strings, respectively, and one control unit for applying a control signal to each of plurality of converters, wherein the plurality of converters constitute a multi-level.
Claims20
A power conversion apparatus comprising:
- a plurality of converters each connected to a plurality of cell strings;
- a plurality of auxiliary power supply unit configured to supply driving power to each of the plurality of converters;
- and
- a control unit configured to apply a control signal for each of the plurality of converters,
- wherein the plurality of converters constitute a multi-level,
- wherein each of plurality of the auxiliary power supply unit comprises two-stage regulators connected in a cascade,
- wherein the two-stage regulators comprise a step-down regulator and a step-up regulator,
- wherein, when a preset target voltage of the auxiliary power supply is lower than a lowest voltage among the plurality of cell strings, the step-down regulator operates, and
- wherein, when the preset target voltage of the auxiliary power supply is higher than a highest voltage among the plurality of cell strings, the step-up regulator operates.
6 more elements
A solar module comprising:
- a plurality of cell strings each comprising one or more solar cells;
- a plurality of converters connected to each of the cell strings respectively;
- a plurality of auxiliary power supply unit configured to supply driving power to each of the plurality of converters;
- and
- a control unit configured to monitor information of each of the plurality of converters and apply a control signal to each of the plurality of converters according to the monitored information,
- wherein the plurality of converters constitute a multi-level,
- wherein each of plurality of the auxiliary power supply unit comprises two-stage regulators connected in a cascade,
- wherein the two-stage regulators comprise a step-down regulator and a step-up regulator,
- wherein, when a preset target voltage of the auxiliary power supply is lower than a lowest voltage among the plurality of cell strings, the step-down regulator operates, and
- wherein, when the preset target voltage of the auxiliary power supply is higher than a highest voltage among the plurality of cell strings, the step-up regulator operates.
7 more elements
Dependencies are inferred from the claim text.