| 摘要 |
PROBLEM TO BE SOLVED: To control the charging voltage and discharging voltage of a storage battery without using such facilities as a charger, discharger and the like by directly connecting the storage battery to a DC line between an AC-DC converter and a DC-AC converter to transmit the power to a system line and charge/discharge the storage battery at the same time. SOLUTION: In a wind power generator A, an induction motor 4 is connected to wind mill blades so structured that a pitch angle can be adjusted by means of a blade pitch angle drive 3 through a driving shaft 2. The wind mill-generated power which is the AC power from the induction motor 4 is converted to DC power by means of an AC-DC converter 5 and then is converted to AC power by means of a DC-AC converter 13 through a DC power line 6 and then is supplied to a power system. This equipment is so structured that excessive wind mill generated power is stored in a storage battery 10 and underwater is supplied to the DC power line 6 from the storage battery 10 under control of an operator 16 by directly connecting the storage battery 10 to the DC power line 6. Due to this structure, reduction in facility can be realized and thereby a charging loss can be eliminated. |
