Design of high-power repetitive pulse laser power supply
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摘要: 根据YAG激光器对大功率高能量脉冲电源的应用需求,设计了一种大功率脉冲激光电源,可实现高脉冲能量重复频率输出及充电电压灵活调控。前级充电网络采用串联LC谐振变换器,后级脉冲形成网络选择晶闸管触发LC放电电路。最终,研制了1台7 kW实验样机,最大重复频率10 Hz,最高充电电压2.2 kV,可实现单脉冲最高700 J电能输出,满足大功率高能脉冲输出的应用需求,实验测试结果验证了设计的可行性。Abstract: This paper proposes a design method for a high-power pulsed power supply for YAG laser systems, which is capable of realizing high-energy repetitive pulse with flexible voltage regulations. The power supply consists of an LC resonant converter as the charging network and a thyristor-based pulse forming network. Based on the proposed design approach, a 7 kW prototype is developed, which is able to output maximum voltage of 2.2 kV with a repetitive frequency ranged from 1 to 10 Hz. Moreover, the developed power supply is able to release up to 700 J of the energy on the xenon lamp.
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表 1 样机参数
Table 1. Prototype parameters
Uin/V C1/μF Cr/μF Lr/μH n C2/μF L/μH fr/kHz f/skHz f/Hz Pmax/kW 220 (50 Hz) 420 0.44 28 1∶5.2 300 80 45 22 10 7.26 表 2 输出能量实验结果
Table 2. Output energy experimental results
voltage/kV single output
energy/Jmax output
fluctuation/%1.6 6.63 0.60 1.8 8.19 0.49 2.0 9.47 0.42 2.2 10.16 0.39 -
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