| 摘要 |
A charge/discharge of a capacitor system (10) with stacked electric double layer capacitors is regulated by an inverter/converter (9) for stabilizing an output power of a wind power generator (1). The inverter/converter controller (53) controls the inverter/converter (9) such that, when the state of charge (SOC) of the capacitor system (10) exceeds an upper threshold (H1), which is smaller than an upper limit (H2), the charged power of the capacitor system (10) gradually decreases according to an excess amount. The inverter/converter controller (53) also controls the inverter/converter (9) such that, when the state of charge (SOC) is below a lower threshold (L1) which is higher than a lower limit (L2), the discharged power of the capacitor system (10) gradually decreases according to a short amount, thereby preventing overcharging and overdischarging of the capacitor system (10).
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