| 摘要 |
PURPOSE:To eliminate an influence of a DC magnetic deviation by connecting a regenerative transformer to the AC output side of a power source two-split inverter. CONSTITUTION:In a snubber energy regenerative circuit for an inverter, snubber capacitors 4a-4b, snubber diodes 5a-5b are provided at an arm element formed of self-arc extinguishing element (GTO) 2a-2b, and flywheel diodes 3a-3b. In this case, a power source two-split inverter 40 is formed of commutation energy absorbing capacitors 21a-21b, transistors 22a-22b, a regenerative transformer 24, etc., and bridge-connected regenerative diodes 25 and a current suppressing impedance 27 are provided. Thus, commutation energy including snubber energy is temporarily absorbed to the capacitors 21a-21b, converted by the inverter 40 to AC, full-wave rectified by the diodes 25 from the transformer 24, and returned to a power source 1.
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