| 摘要 |
PROBLEM TO BE SOLVED: To provide a power converter for solar power generation which does not require any commercial transformer for output nor any other solar battery than one, and can use such a solar battery that outputs a voltage lower than the voltage required by a half-bridge inverter. SOLUTION: The output voltage of a solar battery 1 is boosted to the voltage required to be inputted to an inverter by means of a boosting chopper constituted of a reactor 5, an IGBT 6, and a diode 7 after the voltage is smoothed by means of a capacitor 8. The boosted voltage is equally divided to capacitors 3 and 4 and the mid-potential point of the divided voltages is connected to a single-phase three-wire neutral point. The energy stored in the capacitors 3 and 4 is converted into single-phase three-wire power by means of IGBTs 9, 10, 11, and 12 constituting a half-bridge inverter and supplied to a system power source 14. |
