A single-phase controlled-current PWM rectifier |
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Authors: | Stihi O. Boon-Teck Ooi |
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Affiliation: | Dept. of Electr. Eng., McGill Univ., Montreal, Que.; |
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Abstract: | The analysis and test results are given for an experimental single-phase controlled-current PWM (pulse-width-modulated) rectifier that operates at unity power factor with near sinusoidal current waveform and that has power reversal capability. The twice-line-frequency AC power is identified as a source of voltage harmonics in the DC link. The harmonics enter into the voltage regulation feedback loop to distort the AC current waveform. These undesirable harmonics can be removed by a low-pass filter. It is noted that the overall design must address the possibility of instability due to the low-pass filter in the feedback path |
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