| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling an active filter apparatus, which suppresses a harmonic wave current set arbitrarily and can cope with change in the fundamental frequency of a power supply. SOLUTION: In the method for controlling the active filter apparatus, a fundamental wave blocking filter means is serially connected to a plurality of harmonic wave blocking means serially connected to each other, an output from the last harmonics blocking means is subtracted from an output from a fundamental wave blocking filter means, and outputted or serially disposed harmonics blocking filter means are replaced by the harmonic wave passing filter means which is disposed in parallel, only a arbitrarily set harmonic components can be obtained by an output obtained from the sum of outputs from the harmonic wave passing filter means, the configuration of each frequency of harmonic wave current components to be suppressed in changed, the harmonic current is suppressed and the harmonic current components on a power supply line are suppressed, in response to the frequency change of the power supply voltage. |
