SELF-CONTAINED POWER SUPPLY SOURCE Russian patent published in 2001 - IPC

FIELD: electrical engineering. SUBSTANCE: invention can find use during welding operations in the field, for power supply of lighting and motor loads, for hand electric tools employed in process of repair, in construction industry and agriculture. Asynchronous generator 2 of enhanced frequency of current is connected to capacitor bank 3. Current control 13 is connected via additional rectifier 12 to additional capacitor bank 11. Three-position condition switch is made of five groups 4, 5, 6, 7, 8 each incorporating three sections and two separate sections 9, 10. Voltage dividers 14 and 15 have common point connected to current control 13 connected through one of separate sections 9 of condition switch to voltage dividers 14 and 15. Voltage divider 14 laced in one of phases of generator 2 of enhanced frequency is connected through current transformer 16. Voltage divider 15 is placed between two phases of same generator. Phases of generator 2 are connected through first group of condition switch to additional capacitor bank 11. They are connected through second group to primary winding of transformer 21 of power supply source and through third group to rectifier 18. Rectifier 18 is connected through separate section 10 of condition switch to welding electrodes and to input of inverter 20. Output of inverter 20 is connected through fourth group of condition switch to primary winding 21 of transformer 22. Secondary winding 23 is connected through fifth group of condition switch to rectifier 18. One of sections in each phase of secondary winding 23 is connected to like sections of other phases and is tied up in common point connected to inverter 20 linked to another side of each of these sections. All sections in each phase of secondary winding 23 of transformer of power supply source can be connected in series and in parallel with the aid of switch 24 of sections of windings. EFFECT: widened functional capabilities of power supply source with minimal increase of its mass and dimensions. 1 dwg