AC/DC CONVERTER

摘要

PROBLEM TO BE SOLVED: To control a current type converter reducing comparison between a command value and a carrier.

SOLUTION: A command value I*is a triangular wave current command value having a period which is a third of a period of three-phase voltages Vr, Vs, Vt. A carrier C1 has a triangular waveform having a period shorter than the period of the command value I*. Comparison result signals Ka, Kb are pulse signals showing a result of comparison between the carrier C1 and the command value I*. In a section of a phase 30 to 90°, a part Kbrp in the section in the comparison result signal Kb is adopted as a gate signal Srp*. In a section of the phase 270 to 330°, a part Karp in the section in the comparison result signal Ka is adopted as the gate signal Srp*.

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