CHARGING/DISCHARGING SYSTEM FOR SOLAR LIGHT POWER GENERATOR IN SMART GRID ENVIRONMENT WITH REAL-TIME PRICING, DUPLEX CONVERTOR OF CHARGING/DISCHARGING SYSTEM, AND CHARGING/DISCHARGING METHOD FOR SOLAR LIGHT POWER GENERATOR
First Claim
1. A charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the charging and discharging system comprising:
- an electricity price monitoring part which collects electricity price information from an electric grid;
an electricity charge amount monitoring part which collects electricity charge amount information of a battery of the charging and discharging system;
a charge and discharge determination part which determines, based on the collected electricity price information and the collected electricity charge amount information, whether electricity supplied from the electric grid is to be charged into the battery or whether electricity stored in the battery via at least one of the electric grid and the solar light power generator is to be discharged to the electric grid; and
a charging and discharging part which selectively performs one of charging the battery and discharging the battery based on the determination made by the charge and discharge determination part.
1 Assignment
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Accused Products
Abstract
Provided are a charging and discharging system for a solar light power generator in a smart grid environment, a method of operating the same, and a duplex converter for charging and discharging electricity into/from a battery. The system includes: an electricity price monitoring part which collects electricity price information from an electric grid; an electricity charge amount monitoring part which collects electricity charge amount information of a battery; a charge and discharge determination part which determines whether electricity supplied from the electric grid is to be charged into the battery or whether electricity stored in the battery via the electric grid or the solar light power generator is to be discharged to the electric grid, based on the price information and the charge amount information; and a charging and discharging part including the battery, so that electricity is charged into or discharged from the battery based on the determination.
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Citations
18 Claims
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1. A charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the charging and discharging system comprising:
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an electricity price monitoring part which collects electricity price information from an electric grid; an electricity charge amount monitoring part which collects electricity charge amount information of a battery of the charging and discharging system; a charge and discharge determination part which determines, based on the collected electricity price information and the collected electricity charge amount information, whether electricity supplied from the electric grid is to be charged into the battery or whether electricity stored in the battery via at least one of the electric grid and the solar light power generator is to be discharged to the electric grid; and a charging and discharging part which selectively performs one of charging the battery and discharging the battery based on the determination made by the charge and discharge determination part. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A duplex converter for charging and discharging electricity into/from a battery of a charging and discharging part of a charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the duplex converter comprising:
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a transformer coupled to an electric grid and the battery and which transforms and outputs a signal supplied from the electric grid or a signal supplied from the battery; a charge and discharge selection switch which is selectively on or off depending on whether the electricity is charged into or discharged from the battery and which is connected to a node for dividing a coil of the transformer on a battery side; charge switching elements which are selectively turned on or off based on a waveform of the signal supplied from the electric grid when the electricity is charged into the battery; and discharge switching elements which are selectively turned on or off based on a waveform of the signal supplied from the battery when the electricity is discharged from the battery. - View Dependent Claims (9, 10, 11, 12)
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13. A duplex converter for charging and discharging electricity into/from a battery of a charging and discharging part of a charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the duplex converter comprising:
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charge switching elements which are selectively turned on or off based on a waveform of a signal supplied from a smart grid when the electricity is charged into the battery; and discharge switching elements which are selectively turned on or off based on a waveform of a signal supplied from the battery when the electricity stored in the battery is discharged to the smart grid, wherein when at least one of the charge switching elements is turned on, a voltage of the smart grid is raised and charged into the battery by control of pulse width modulation to adjust a turn-on time and a turn-off time of the turned-on at least one charge switching element and by voltages stored in capacitors when the battery is charged, and when at least one of the discharge switching elements is turned on, the raised voltage of the battery is discharged to the smart grid by control of pulse width modulation to adjust the turn-on time and the turn-off time of the turned-on at least one discharge switching element. - View Dependent Claims (14)
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15. A method of charging and discharging electricity into/from a battery of a charging and discharging part of a charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the method comprising:
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receiving electricity price information from an electric grid; receiving electricity charge amount information of the battery; determining whether electricity is to be purchased from the electric grid or whether electricity stored in the battery via at least one of the electric grid and the solar light power generator is to be sold to the electric grid, based on the received electricity price information and the received electricity charge amount information; and selectively performing one of charging and discharging the battery, based on a result of the determining. - View Dependent Claims (16, 17)
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18. A method of charging and discharging electricity into/from a battery of a charging and discharging part of a charging and discharging system for a solar light power generator in a smart grid environment with real-time pricing, the method comprising:
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charging switching elements, of a duplex converter, which are selectively turned on or off based on a waveform of a signal supplied from a smart grid when the electricity is charged into the battery; and discharging switching elements, of the duplex converter, which are selectively turned on or off based on a waveform of a signal supplied from the battery when the electricity stored in the battery is discharged to the smart grid, wherein when at least one of the charge switching elements is turned on, a voltage of the smart grid is raised and charged into the battery by control of pulse width modulation to adjust a turn-on time and a turn-off time of the turned-on at least one charge switching element and by voltages stored in capacitors when the battery is charged, and when at least one of the discharge switching elements is turned on, the raised voltage of the battery is discharged to the smart grid by control of pulse width modulation to adjust the turn-on time and the turn-off time of the turned-on at least one discharge switching element.
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Specification