Abstract
This paper proposes a method to compensate for the power factor error existing in the passive filter design method for HAPF by applying the sinusoidal wave injection method to the LC design method of the passive filter for HAPF. As the LC design method of the passive filter for HAPF assumes that is 1[p.u], it is necessary to completely compensate the harmonics included in the system to accurately compensate the power factor. This is a result of assuming an ideal case, and in practical terms, harmonics cannot be completely eliminated. Therefore, since is not 1[p.u], an error may occur in reactive power compensation. Accordingly, in this paper, we propose a method to reduce the power factor error by applying the sinusoidal injection method based on the default value used in the LC design method of the passive filter for HAPF for MI. The power factor error that appears when the sinusoidal wave injection method is applied to the LC design method of the passive filter for HAPF was precisely compared and analyzed, and the error and effect were analyzed through simulation. As a result, it was possible to see the result of reducing the error from 0.296 [%], which is the power factor error of the passive design method for HAPF, to about 0.04 [%] by applying the sinusoidal injection method.
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