METHOD TO SUPPLY TO ELECTROTECHNICAL APPLIANCES AND DEVICE FOR ITS REALISATION Russian patent published in 2012 - IPC H02M5/12 

FIELD: electricity.

SUBSTANCE: in the method to supply to electrotechnical appliances with application of an AC voltage generator by means of voltage transfer from the generator to the low-voltage winding of a high-frequency transformer, electric energy to the low-voltage winding of the high-frequency transformer is sent via a unit from two high-frequency generators via a unit of capacitors serially connected with generators with a differences of frequencies Δ=f_1-2, where f₁ - frequency of the first generator, f₂ - frequency of the second generator, f₁. makes 1-100 kHz, and Δ=0.01-0.1f₁, and a part of electric energy from the high-voltage winding is sent via a unit of the feedback voltage converter to generators supplying their low-voltage winding. In the device for supply of electrotechnical appliances comprising a source of AC voltage with a controlled frequency, a high-frequency transformer, the device comprises two high-frequency generators, outputs of which via capacitors are connected in series with the low-voltage winding of the high-frequency transformer and has an additional fifth capacitor, which is connected in parallel with the low-voltage winding, the high-voltage winding of the high-frequency transformer is connected with an electrotechnical appliance and via the voltage converter is connected with inputs of two high-frequency generators.

EFFECT: higher efficiency of the method and devices to supply to electrotechnical appliances and reduced losses when supplying to electrotechnical devices.

2 cl, 1 dwg