Modeling and fault analyzing for power conditioning system of solid-state laser facility
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摘要: 能源系统(PCS)为固体激光装置片状放大系统提供匹配的电脉冲泵浦能量,涉及到高压、大电流的充放电过程,在这个过程中可能发生电容器短路、高低压母排短路等灾难性故障。针对上述情况,建立了能源系统及其三种主要故障的数学模型;通过仿真计算分析了氙灯负载非线性特性对系统模型的影响,提出了加入补偿参数的修正模型,并通过实验验证了其有效性;分析了故障情况下关键元件(阻尼电感、调波电感、储能电容)的耐受能力以及保护措施。Abstract: The power conditioning system (PCS) which provides matched pulse energy for amplifier is a subsystem of a solid-state laser facility. Some catastrophic faults such as capacitor internal short-circuit, bus bar breakdown to ground or high voltage cable short, may occur in the PCS due to the process of charging and discharging which involves high voltage and huge current. To analyze these cases, firstly, the models of the PCS and three main faults are proposed. Secondly, the nonlinear effect of xenon lamp for system model is analyzed based on simulation results and a fixed model with compensation parameter is presented, the experiment results has verified the effectiveness of the fixed model. At last, the tolerance and safety of key components such as damping inductors, capacitors, ballast inductors, are analyzed when faults happened. As a result, the proposed model provides some necessary support for parameter design and fault protect of PCS.
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Key words:
- solid-state laser facility /
- power conditioning system /
- fixed model /
- fault analysis
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表 1 能源系统主要参数配置
Table 1. Configuration of power conditioning system (PCS)
capacitor bank capacitor number single capacitor/μF voltage/kV 10% width/μs main discharging 34 110 24 550 pre-ionization 1 80 24 100 表 2 能源系统电路参数
Table 2. Circuit parameters of PCS
parameter single inductor/μH single resistance/mΩ equivalent inductor/μH equivalent resistance/mΩ damping inductor 73.0 112 2.15 3.29 ballast inductor 16.0 2 1.60 0.20 high voltage cable 8.5 30 0.85 3.00 equivalent value 4.60 6.49 表 3 氙灯负载参数
Table 3. Parameters of xenon flash lamp
length/mm diameter/mm pressure/Pa 34 110 3192 -
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