基于软开关及优化算法极点控制的半导体激光电源  

Semiconductor Laser Power Supply Based on Zero Voltage Switch and Pole Control with Optimal Algorithm

作　　者：唐秀慧 马新敏[2] 朱方顺 Tang Xiuhui;Ma Xinmin;Zhu Fangshun(The University of New South Wales,Sydney,NSW 2033,Australia;National Engineering Research Center for Laser Processing,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]The University of New South Wales,Sydney,NSW2033,Australia [2]华中科技大学激光加工国家工程研究中心,湖北武汉430074

出　　处：《应用激光》2018年第5期852-858,共7页Applied Laser

摘　　要：大功率半导体激光器越来越成为主力光源,针对传统的开关型电源半桥或全桥变换器电流的动态响应速度及控制精度问题,根据激光加工中快速开关的要求,使用了ZVS软开关技术及端采用同步倍流整流,从而达到减耗高效以及对负载电压的自适应能力的目的,同时采用一种基于最优算法的极点配置控制实现电压和电流的精准调节。整个系统使用闭环负反馈回路控制,系统软件仿真采用SIMULINK环境,调控简便。研究结果表明,控制精度高达0.1%,并在0.1s内完成回路响应。当实验负载RL>0.48Ω时,变换器输出为恒流特性;满载(50A/24V)输出时,电源效率超过90%,纹波系数小于1%。采取同步整流具有高于二极管整流的效率。High-power semiconductor laser device has become the main optical source. Due to issues of the dynamic response speed and control accuracy of the current from traditional switching mode power supply with half-bridge or full bridge converter currents. According to the requirements of fast switching in laser processing, ZVS soft-switching technology and synchronous double current rectifier are adopted to achieve the purpose of high efficiency and adaptive to load voltage. At the same time, a pole-based configuration control based on the optimal algorithm is used to achieve precise adjustment of voltage and current. The whole system employs closed-loop negative feedback loop control, with system software simulation in SIMULINK environ-ment, which is simply regulated. The results show that the control accuracy can reach 0.1%, and loop response time is completed within 0.1 s. When the experimental load RL〉0.48 Ω, the converter output is constant current. When at full load out-put （50 A/24 V）, the power supply efficiency exceeds 90%, ripple factor is less than 1%. Taking synchronous rectifier has higher efficiency than diode rectifier.

关 键 词：半导体激光器 软开关启动 倍流整流 恒流源 最优算法 极点配置控制法 

分 类 号：TN242[电子电信—物理电子学]