| 摘要 |
PROBLEM TO BE SOLVED: To provide voltage control device and method for stabilizing the DC voltage of a DC wire connected to each converter of plural dispersion type power sources.SOLUTION: Converters 21 to 26 are connected to each dispersion type power source 10. The converters 21 to 26 are connected to a bus voltage control device 40 through a communication line L2. A controller 41 of the bus voltage control device 40 detects the bus voltage of a DC bus L1, and detects a ripple voltage having a bus voltage waveform. When the amplitude of the ripple voltage is determined to be not less than a threshold value, the controller 41 of the bus voltage control device 40 determines a compensation voltage for offsetting ripple, and executes control instruction processing of offsetting the ripple voltage on the converters 21 to 26. |
