DIRECT FREQUENCY CONVERTER Russian patent published in 2006 - IPC H02M5/27 H02P9/42 

FIELD: the invention refers to electrical technique and designed for using in stabilized high frequency sources of electric energy for autonomous systems of electric supply.

SUBSTANCE: a direct frequency converter has two power blocks combined together with its three-phase inputs and single-phase outputs. The single-phase outputs of the power blocks are connected with the output filter which is connected with a load through a current transformer. The driving oscillator with its output is connected with the first input of the adder unit, with the first input of the measuring device of voltage deviations and the first input of the regulator of magnetizing. The second input of the adder unit is connected with the output of the measuring device of voltage deviations and the output is connected with the first inputs of the blocks of forming of controlling signals. Their second inputs are connected with the outputs of the generator of the forming type whose input is connected with the output of the current transformer and the third inputs - with the outputs of the block of cosine synchronization. The outputs of the blocks of forming of controlling signals are connected with controlling inputs of the power blocks. The transformer with a rotating magnetic field has secondary three-phase windings, primary 16 and additional 17 windings, a condenser 18. The secondary windings of the indicated transformer are connected with block of cosine synchronization. The basic primary winding is connected through a condenser with an additional primary winging with one of the phases 19 of the source of high frequency voltage through a working winding of the controlling throttle - with the other phase and the input of the power blocks. The winding of the control throttle is connected with the regulation of magnetizing, whose second input is connected with the third output of the block of the cosine synchronization.

EFFECT: increases stability and reliability of the work of direct frequency converters.

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