| 摘要 |
Disclosed is an active harmonic-eliminating apparatus for eliminating harmonics contained in a power line. The apparatus includes a current sensor for sensing current waveform flowing along the power line, a clock generator for generating a clock having a predetermined frequency, phase shifters for consecutively shifting a phase of the clock generated in the clock generator, A/D converters operating in response to the clocks phase-shifted by the phase shifters to convert the current waveform into digital data, harmonic analysis modules for analyzing the harmonics from the digital data, inverse harmonic generation modules for generating inverse harmonics for the analyzed harmonics, modulators for performing a PWM using signals transmitted from the inverse harmonic generation modules, and switching circuits for generating inverse harmonic currents using a modulated wave from the modulators and inputting the inverse harmonic currents to the power line. |
