大容量交直変換装置の新たな高調波抑制手法の検討

概要

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Low Harmonic Component Elimination Method that is one of the methods of PWM control is an effective method to the miniaturization of the filter, or the decrease of the loss by the decrease of the switching frequency. However, this method is only a specific usage like a Static Var Generator, because this method only can read the switching angle decided beforehand from the memory and only can control fundamental wave. In this paper a PWM method to control Low Harmonic Components is proposed. The proposed method use the curved triangle wave that was developed this time for the carrier wave. The proposed method turned out decreasing the total harmonic distortion more than conventional Low Harmonic Component Elimination Method and Subharmonic Method by some experimental results employing single phase inverter.
2009-01-01