基于电流馈电推挽式变换拓扑的变换器电源设计

Design of Converter Power Supply Based on Current Fed Push-pull Transformation Topology

以提高变换器电源的效率和可靠性为目标,设计了基于电流馈电推挽式变换拓扑的变换器电源。为使变换器电源具备开关管以零电压开关方式通断、开关频率恒定等理想特性,采用电压型推挽全桥逆变器,设计属于电流馈电推挽式变换拓扑结构的变换器电源装置主回路。选择DSSK60-015A全波整流二极管作为变换器电源主回路硬件;通过反馈控制电路调控电压波动时控制端流变化;根据变压器电感、匝数、线径等特性设计变压器绕制结构,完成变换器电源变压过程;设计保护电路,保证电源可靠工作。实验结果表明,所设计的变换器电源的输出电压、电流误差范围均在2%内,开关管实现了零压开通,变换器电源功率因数均保持在0.96以上,且效率高达95%。

To improve the efficiency and reliability of converter power supplies,a converter power supply based on the current fed push-pull transformation topology is designed.To make the converter power supply have ideal characteristics such as switching on and off in zero voltage switching mode and constant switching frequency,a voltage-type pushpull full-bridge inverter is used to design the main circuit of the converter power supply device which belongs to the current fed push-pull transformation topology structure.A DSSK60-015A full-wave rectifier diode is selected as the main circuit hardware of the converter power supply,and the terminal current change is controlled by the feedback control circuit when the voltage fluctuates.The winding structure of the transformer is designed according to the characteristics such as transformer inductance,turns and wire diameter so as to complete the transformation process of the converter power supply.Moreover,a protection circuit is designed to ensure the reliable operation of the power supply.Experimental results show that the error ranges of both the output voltage and current of the designed converter power supply were within 2%,the switching tube realized zero voltage on,the power factor of the converter power supply was kept above 0.96,and the efficiency was up to 95%.