| 摘要 |
FIELD: electricity.SUBSTANCE: invention is referred to power conversion equipment and is a DC/DC converter with transformer coupling between the power supply unit and load. The claimed device comprises a pulse transformer to transmit energy to the load circuit, a current switch of the transformer first winding, a current rectifier of the transformer second winding and a capacitor of the output filter coupled in parallel to direct-current load, besides each valve of the rectifier is coupled between the secondary winding output connected to it and one output of the output filter capacitor, for each valve there is an auxiliary circuit in the form of a three-terminal device, which first output is coupled to the connection point of the secondary winding output and the valve while its second and third outputs are coupled to outputs of the output filter capacitor, in the three-terminal device between its second and third outputs there is a diode circuit represented by the first and second diodes and between the first output of the three-terminal device and the midpoint of the diode circuit there is a capacitor, an auxiliary damping RC-circuit is introduced to the three-terminal device as in-series resistor and capacitor and this circuit shunts the first or second diodes in the three-terminal device.EFFECT: increase of efficiency and reliability of the claimed device.2 cl, 4 dwg |
