AC AND DC POWER SUPPLY SYSTEM Russian patent published in 2009 - IPC H02H7/04 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and may be used as power supply system for the equipment with AC and DC consumers. The system contains AC voltage source with clip 1 and 2, three-phase transformer containing magnetic circuit comparable to electric machine type. The magnetic circuit consists of an external part with grooves and coaxial internal part with grooves, single-phase windings 1 and 2 and three-phase windings 1, 2 and 3 and clips for consumer connection. In addition, single-phase windings 1 and 2 are serially and in accord connected between each other and parallel connected to the source clips. They are placed in the internal part of the core and spatially shifted with regard to each other. The shift is equal to π/2. Besides, the second single-phase winding end is pulled through the capacitor. The three-phase windings 1, 2 and 3 are implemented with poles quantity related to each other as 1:3:5. In addition, the three-phase windings 1 and 2 are coupled with clips for the direct consumer connection, while the third winding is coupled through the three-phase bridge rectifier. Besides, the number of grooves at both parts of core is proportional to the doubled number of the corresponding windings phases.

EFFECT: wide functional capabilities.

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