脉冲功率电源模块时序放电控制系统设计

设计了一套用于控制30个脉冲功率电源模块按时序进行放电的控制系统。该控制系统使用高速数字信号处理器作为主要控制芯片，采用高速光电转换器件及光纤作为触发信号传输系统，利用脉冲隔离变压器作为电源开关触发系统的主要隔离元件，在硬件方面实现了时序放电触发信号的高精度传输和高压隔离。同时，该控制系统使用优化的软件算法对数字信号处理器进行软件编程，实现了放电时序计算的优化控制，而且利用简易的计算机语言对上位机软件进行编写，实现对放电时序进行精确的设置，从而保证了时序放电的精确度。将该控制系统用于实际的30路脉冲功率电源放电装置的实验中，得到了良好的放电电流实验波形。根据时序触发波形及放电波形进行分析，该时序放电控制系统每路电源放电时间最小间隔可达到20 μs，电流波形反映的触发时刻与放电时序设置时刻的延时误差分布在10~15 μs，整个控制系统的性能符合设计的要求。

Design of time sequence discharging control system for pulse power supply modules

With the development of pulse power technology, the pulse power supply modules (PPSMs) are widely used in areas of scientific research, medical treatment, industry, military, and geological exploration. In these areas, more and more energy is needed and the number of PPSMs is increasing rapidly, and accurate pulse discharging waveforms are required. How to control the numerous PPSMs to discharge in precise time sequence effectively to obtain the waveforms becomes one of the key problems in the pulse power technology.According to the requirements of a pulse discharging velocity source, a time sequence discharging control system is designed, which can control 30 PPSMs to discharge in a precise time sequence. In this control system, the digital signal processor (DSP) is used as the main control chip and the high speed photoelectric converters and optical fibers are used as the trigger signals transmission system. The time sequence can be set by using the upper computer software and the accuracy of the trigger pulses can reach microsecond level. This control system has been used in the actual experiments of the acceleration source and the results prove that the control system is effective.