双闭环反馈控制半桥DC-DC变换器设计  

Double closed-loop feedback control half-bridge DC-DC converter

作　　者：吴晓光[1] 羊彦[1] 

机构地区：[1]西北工业大学电力电子实验室,陕西西安710129

出　　处：《电子设计工程》2014年第16期100-102,105,共4页Electronic Design Engineering

基　　金：研究生创业种子基金项目(Z2013088)

摘　　要：桥式拓扑广泛用于直流供电电压高于晶体管的安全耐压值的离线式变换器中,针对双闭环反馈控制半桥DCDC变换器电路,为了得到稳定的直流电压、电流输出,采用电压闭环回路和电流闭环回路的反馈放大最终实现对半桥开关PWM波信号的控制,进而影响半桥变换器的轮流导通MOS开关管的导通占空比的方法,通过闭环网络仿真实验和硬件电路功率实验,验证了双闭环反馈控制可以满足半桥电路3.6 kW功率输出的要求。The bridge topology is widely used for DC power supply voltage is higher than the safe voltage transistor off-line converters, double-loop feedback control hag-bridge DC-DC converter circuit, in order to get astable DC voltage, current output, using closed-loop voltage and current closed loop feedback amplification to achieve the control of half-bridge switching PWM wave signal, thereby affecting the haft-bridge converter turns conducting MOS switch conduction duty cycle method, the closed-loop network simulation experiments and hardware circuit power an experiment to test the double-loop feedback control to meet the half-bridge circuit 3.6 kW power output requirements.

关 键 词：桥式拓扑 半桥控制 闭环反馈 轮流导通 

分 类 号：TN99[电子电信—信号与信息处理]