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Diode rectifiers have been widely used for an AC-DC converter. One of their problems is that they include large harmonic components in its input current. A 12-pulse diode rectifier is useful for reducing them, but it still includes the (12 m∓1)th (m: integer) current harmonics in its input. In order to further reduce the input current harmonics a single-phase square wave voltage supply is combined to a 12-pulse diode rectifier as an auxiliary supply. Theoretical analysis of the combined twelve-pulse diode rectifier is presented, and reduction in the harmonics and improvement on the displacement power factor are verified by simulation and experimental results.
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on (Volume:2 )
Date of Conference: 17-20 Nov. 2003