| 摘要 |
PURPOSE: To obtain a cycloconverter circuit which simplifies a main circuit and a snubber circuit reduces costs. CONSTITUTION: Switching series circuits 13 to 16 by means of semiconductor switching elements Q1 to Q8 and diodes D1 to D8 are connected in parallel with a snubber circuit 17, and intermediate connection points of the switching series circuits 13, 14 are connected respectively to terminals (u), (v) of a secondary winding for a high-frequency transformer 12. Then, the intermediate connection point of the switching series circuit 15 is used as an output terminal R via a filter 18, the intermediate connection point of the switching series circuit 16 is used as an output terminal S via a filter 19, and the intermediate tap of the secondary winding for the high-frequency transformer 12 is used as an output terminal N. Thereby, a general switching series circuit can be used, and the switching series circuit functions as a switch for discharging snubber energy. |
