CAJ | 학술논문

使用Saber软件对DC/DC开关电源进行开环仿真,输入电压波动时,输出纹波电压较大,不能满足设计要求。对系统进行小信号分析后,根据系统伯德图分析系统传递函数的结构形式,进行闭环反馈网络的设计。将闭环反馈网络加入系统进行仿真,结果表明：闭环反馈网络不仅使得输出电压迅速上升,而且减小了输出电压的纹波系数,提高了输出电压的稳定性。
사용Saber연건대DC/DC개관전원진행개배방진,수입전압파동시,수출문파전압교대,불능만족설계요구。대계통진행소신호분석후,근거계통백덕도분석계통전체함수적결구형식,진행폐배반궤망락적설계。장폐배반궤망락가입계통진행방진,결과표명：폐배반궤망락불부사득수출전압신속상승,이차감소료수출전압적문파계수,제고료수출전압적은정성。
When input voltage fluctuates in open -loop simulation of DC/DC switching power supply w,m Saber software, the tipple of output voltage is large, so it can not meet design requirement. After small signal analysis of system, according to the Bode diagram of system, transfer function structure is deduced, and closed loop feedback network is designed. The closed loop feedback network is then added into system to simulate. The result shows that closed loop feedback network not only makes output voltage rise quickly, but also reduce ripple coefficient of output voltage, improves stability of output voltage.