ENERGY STORAGE SYSTEM AND METHOD OF CONTROLLING THE SAME
First Claim
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1. A method of controlling an energy storage system connected to a power generation system, a battery, a grid, and a load, the method comprising:
- determining whether the grid is connected to the load; and
determining whether power is generated by the power generation system,wherein the energy storage system operates in one of a plurality of modes, based on at least one of the amount of power generated by the power generation system, the charge state of the battery, the amount of power needed to charge the battery, the amount of power discharged from the battery, the amount of power to be consumed by the load, the current time, whether the grid is connected to the load, and whether power is generated by the power generation system.
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Abstract
An energy storage system and a method of controlling the energy storage system are disclosed. The energy storage system includes an integrated controller configured to determine a functional state of a power converting unit, a bidirectional converter, and a bidirectional inverter based on conditions of the power generation system, the battery, and the load.
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Citations
20 Claims
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1. A method of controlling an energy storage system connected to a power generation system, a battery, a grid, and a load, the method comprising:
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determining whether the grid is connected to the load; and determining whether power is generated by the power generation system, wherein the energy storage system operates in one of a plurality of modes, based on at least one of the amount of power generated by the power generation system, the charge state of the battery, the amount of power needed to charge the battery, the amount of power discharged from the battery, the amount of power to be consumed by the load, the current time, whether the grid is connected to the load, and whether power is generated by the power generation system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An energy storage system connected to a power generation system, a battery, a grid, and a load, the energy storage system comprising:
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a power converting unit configured to convert voltage output from the power generation system to a DC link voltage; a bidirectional convertor configured to operate in one of a first discharging mode for converting power output from a battery voltage to the DC link voltage and a first charging mode for converting the DC link voltage to a charging voltage of the battery; a bidirectional inverter configured to operate in one of a second discharging mode for converting the DC link voltage to alternated current (AC) voltage for the grid and a second charging mode for converting the AC voltage of the grid to the DC link voltage; and an integrated controller configured to determine functionality of the power converting unit, the bidirectional converter, and the bidirectional inverter based on states of the power generation system, the battery, and the load. - View Dependent Claims (19, 20)
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Specification