大功率激光器驱动电源的闭环控制与补偿

Closed-loop control and compensation of high-power laser driving power supply

利用状态空间平均法为大功率激光器恒流驱动电源的移相全桥倍流整流电路建立了等效的小信号模型,在此基础上研究了其闭环控制系统,并使用集成控制芯片UCC28950设计了为实际生产所需要的控制电路。应用自动控制原理和Matlab工具设计了闭环系统的补偿网络,使得该恒流电源具有良好的瞬时动态特性和抗干扰性。

For phase-shifted full bridge current-doubler rectifier circuit of high-power laser constant current drive pow- er ,small signal equivalent model is established by state space average method. Based on this, the closed-loop control system was studied. The integrated control chip UCC29950 was used to the actual control circuit. According to auto- matic control principle, the compensation network of the closed-loop control system was designed by Matlab, which makes the constant current supply has good transient dynamic characteristics an anti-interference.