Method and apparatus for supplying AC power to commercial power line by using sunlight
First Claim
1. An apparatus for supplying AC power to a commercial power line by using sunlight, comprising:
- a solar battery for generating DC power;
a voltage booster for boosting the voltage of the DC power to a target voltage;
a power converter for converting the DC power whose voltage has been boosted by said voltage booster, into AC power having a predetermined frequency and a voltage and adding said AC power to the commercial power line; and
a voltage controller for setting the target voltage of said voltage booster based on the voltage of the AC power in the commercial power line, wherein the voltage of the AC power from said power converter is higher than the voltage of the AC power in the commercial power line.
1 Assignment
0 Petitions
Accused Products
Abstract
After starting the input of a switching signal to a booster circuit whose boosting rate is changeable in accordance with the duty ratio of the inputted switching signal and calculating the output power of an inverter circuit, which is connected to the subsequent stage of the booster circuit, from the output current of the inverter circuit, the target voltage after boosting by the booster circuit is obtained based on the output power. If the actual output voltage of the booster circuit is lower than the target voltage, the duty ratio of the above switching signal is increased, and if higher, the duty ratio of the above switching signal is decreased.
188 Citations
17 Claims
-
1. An apparatus for supplying AC power to a commercial power line by using sunlight, comprising:
-
a solar battery for generating DC power; a voltage booster for boosting the voltage of the DC power to a target voltage; a power converter for converting the DC power whose voltage has been boosted by said voltage booster, into AC power having a predetermined frequency and a voltage and adding said AC power to the commercial power line; and a voltage controller for setting the target voltage of said voltage booster based on the voltage of the AC power in the commercial power line, wherein the voltage of the AC power from said power converter is higher than the voltage of the AC power in the commercial power line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus for supplying AC power to a commercial power line by using sunlight, comprising:
-
a solar battery for generating DC power; a voltage booster for boosting the voltage of the DC power to a target voltage; a power converter for converting the DC power whose voltage has been boosted by said voltage booster, into AC power having a predetermined frequency and a voltage and adding said AC power to the commercial power line; and a voltage controller for setting the target voltage of said voltage booster based on the voltage of the AC power in the commercial power line, wherein the voltage of the AC power outputted from said power converter is higher than the voltage of the commercial power line. - View Dependent Claims (12)
-
-
13. A method of supplying AC power to a commercial power line by using sunlight, comprising:
-
a boosting step which boosts the voltage of DC power to a target voltage; a power conversion step which converts the DC power from said boosting step into AC power having a controlled predetermined frequency and adds the AC power from the conversion step to the commercial power line; and a control step which sets the target voltage of said boosting step based on the AC power in the commercial power line, wherein the voltage of the AC power outputted from said power conversion step is higher than the voltage of the AC power in the commercial power line. - View Dependent Claims (14, 15, 16, 17)
-
Specification