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A 12-pulse diode bridge rectifier is often used in high-power rectification. However, the total harmonic distortion (THD) of input line current in 12-pulse rectifier does not meet the IEEE-519 standard. In order to reduce the harmonics to an acceptable level, we use a two-stage auxiliary circuit at dc side of the 12-pulse rectifier to eliminate harmonics actively. The effect of the auxiliary circuit’s...
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