Energy storage system and controlling method thereof
First Claim
Patent Images
1. An energy storage system comprising:
- a battery;
an inverter for receiving a first power from an external source and generating a second power; and
a converter coupled between the battery and both the external source and the inverter, the converter being configured to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery,wherein the converter is configured to enter the off mode for a set period of time when a difference between a value of the first power and a value of the second power changes polarity.
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Abstract
An energy storage system and a controlling method thereof are provided. Accordingly, an operation mode of the energy storage system is stably changed. The energy storage system includes: a battery; an inverter for receiving a first power from an external source and generating a second power; and a converter coupled between the battery and both the external source and the inverter. The converter is configured to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery.
24 Citations
23 Claims
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1. An energy storage system comprising:
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a battery; an inverter for receiving a first power from an external source and generating a second power; and a converter coupled between the battery and both the external source and the inverter, the converter being configured to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery, wherein the converter is configured to enter the off mode for a set period of time when a difference between a value of the first power and a value of the second power changes polarity. - View Dependent Claims (2, 3, 4)
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5. An energy storage system comprising:
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a battery; an inverter for receiving a first power from an external source and generating a second power; and a converter coupled between the battery and both the external source and the inverter, the converter being configured to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery, wherein the converter is configured to enter the off mode when a value of the first power is between a first threshold value and a second threshold value that is lower than the first threshold value. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A method of operating an energy storage system comprising a converter coupled between a battery and both an external source and an inverter, the method comprising:
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converting a first power from the external source to a second power by the inverter; operating the converter to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery; discharging the battery by the converter when a value of the first power is less than a value of the second power and charging the battery by the converter when the value of the first power is greater than the value of the second power; and operating the converter to enter the off mode for a set period of time when a difference between the value of the first power and the value of the second power changes polarity. - View Dependent Claims (14, 15, 16)
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17. A method of operating an energy storage system comprising a converter coupled between a battery and both an external source and an inverter, the method comprising:
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converting a first power from the external source to a second power by the inverter; operating the converter to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery; discharging the battery by the converter when a value of the first power is less than a value of the second power and charging the battery by the converter when the value of the first power is greater than the value of the second power; and operating the converter to enter the off mode when the value of the first power is between a first threshold value and a second threshold value that is lower than the first threshold value. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification