DESIGN OF TRANSISTOR PULSE CONVERTER AND METHOD FOR RECOVERING TRANSFORMER DISSIPATION ENERGY

摘要

The invention relates to electrical engineering, in particular, to power pulse converting equipment, and concerns a method and a device for limiting voltage without losses on the transistor pulse switch loaded with a stray inductance load. A design of a transistor pulse converter comprising a series-connected load, a pulse switch, and an input terminal; a first electrical circuit comprising first and second capacitors; a first diode connected in series to the first circuit; a choke connected to the connection point of the first diode to the first circuit, wherein the series-connected first diode and the first circuit are connected in parallel to the load so that the first circuit is connected to the load connection point of the pulse switch, and the choke and the first diode are connected in parallel to the input terminal so that the first diode rectifies the current towards the positive electrode of the input terminal, characterized in that the first circuit further includes series-connected second, third and fourth diodes, such that they rectify the current in the direction opposite to the first diode; the first capacitor is connected in parallel with the second and the third diodes, the second capacitor is connected in parallel with the third and fourth diodes. A method of recovering dissipation energy of a flyback converter transformer using the claimed design and a power source, wherein capacitors of the first circuit are connected in parallel when discharging and connected in series when charging, doubling the reverse voltage for magnetization reversal of the transformer. The technical result is the expansion of the duty cycle range of the pulse switch, in which the claimed design is capable to operate in continuous current mode of the regenerative choke, and, as a result, an increase in the efficiency of energy recovery of the dissipation magnetic field of a high-frequency transformer.