基于DSP的免损大电流开关电源研究

提出了一种基于DSP的免损大电流开关电源拓扑结构.开关电源的输入回路由串联电容及开关阵组成,输出回路由并联电容及开关阵组成,由运算速度快、计算精度高的DSP作为控制器,DSP输出可控脉冲,控制开关阵通断状态,以改变开关电源的输出.用状态平均法分析了开关电源充放电过程.对此开关电源做了计算机仿真实验,验证其输出电流可调特性.该开关电源具有输出电流可调、谐波小、体积小、损耗低的特点.

Study on Loss-Free Heavy Current Switching Power Supply Based on DSP

Proposes a topological structure of loss-free heavy current switching power supply based on DSP.For such power supply the input circuit is composed of a series capacitor-switch array and output circuit is composed of a parallel capacitor-switch array.DSP which has rapid run speed and high calculating precision is used as controller,the DSP outputs controllable pulse for on-off control of switch arrays as to change correspondingly the power supply output.Thus state averaging method is used to analyze the charging and discharging processes of the switching power supply.A simulation experiment was carried out to verify the regulatability of the switching power supply which is featured with regulatable current output.Furthermore,the switching power supply has characteristics of low harmonic,small size,and low power loss.