Grid-connected inverter system
AssigneeLs Electric Co., Ltd.
InventorKwang-Soo Koh
Life of this patent
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Abstract
The grid-connected inverter system according to one embodiment of the present invention may convert direct current supplied from a direct current source into alternating current, receive a control command from an upper level controller and a power electronics building block group comprising a plurality of power electronics building blocks for supplying the converted alternating current to a grid, determine the number of power electronics building blocks which will operate according to the control command, and transmit a control signal for operating the determined number of power electronics building blocks to corresponding power electronics building blocks.
Claims15
A grid-connected inverter system comprising:
- a power electronics building block group including a plurality of power electronics building blocks, a plurality of switched-mode power supplies, and a plurality of relay modules corresponding to the plurality of power electronics building blocks,
- wherein each power electronics building block is configured to convert direct current (DC) power supplied from a DC power source to alternating current (AC) power, and to supply the AC power to a grid;
- a master controller configured to:
- receive a control command from a higher controller,
- determine a number of power electronics building blocks to be activated based on the control command, and
- transmit a control signal triggering operations of the determined number of the power electronics building blocks thereto;
- and
- a main switched-mode power supply to supply power to the master controller, wherein the main switched-mode power supply supplies power to each switched-mode power supply corresponding to each relay module.
Dependencies are inferred from the claim text.