DOUBLE-FREQUENCY RESONANT CONVERSION DEVICE Russian patent published in 2010 - IPC H02M7/523 

FIELD: electric engineering.

SUBSTANCE: main circuit of double-frequency resonant conversion device comprises DC voltage source, the first, second, third and fourth throttles, the first and second controlled valves, the first and second diodes, the first and second windings of load-inductor, and also the first and second capacitors, at the same time the first pole is connected to the first output of the first throttle, the second output of which is connected to the first outputs of the third and fourth throttles, the second outputs of which are connected to the first outputs of the first and second controlled valves, the second output of the first controlled valve is connected to joined first outputs of the first capacitor and the first winding of load-inductor, the second outputs of which are also connected to each other and are connected to the first output of the second throttle, the second output of which is connected to the second pole of DC voltage source, at the same time the second output of the second controlled valve is connected to joined first outputs of the second capacitor and the second winding of load inductor, the second outputs of which are connected to each other and to the second outputs of the first capacitor and the first winding of load inductor, at the same time the first and second diodes are connected as opposite and parallel accordingly to the first and second controlled valves, at the same time the first and second windings of load inductor are connected as matched and serial to each other. When opening and closing first the first controlled valve and then the second controlled valve for several times, high-frequency and low-frequency components of electromagnetic field are generated in the first and second windings of load-inductor. Two versions are built on the basis of the main circuit of conversion device, let us call it conversion unit, and one of versions consists of two conversion units, and the second one - of three conversion units. In the first version due to shift of electric low-frequency component of electromagnetic field by 90° in the second conversion unit relative to the first one in the first, second, third and fourth windings of load inductor, simultaneously high-frequency electromagnet field and double-phase low-frequency field are generated. In the second version due to shift of electric low-frequency component of electromagnetic field by 120° in three conversion units relative to each other in the first, second, third, fourth, fifth and sixth windings of load inductor, simultaneously high-frequency electromagnet field and three-phase low-frequency field are generated.

EFFECT: simultaneous generation of high-frequency and low-frequency electromagnet fields and simplification.

3 cl, 3 dwg