中文摘要：

等离子体合成射流是高速流场控制的一种重要手段,而高重频、大能量的等离子体合成射流可以产生更好的流动控制效果。为此研制了一台可实现高重频等离子体高能合成射流的脉冲电源,输出参数为：电压幅值0~10k V,重复频率0~1 000 Hz可调,脉宽15μs,放电电流峰值320 A,放电能量超过150 m J。首先,对脉冲源的拓扑结构进行了设计,对其工作原理进行了说明。其次研究了放电电容对于输出波形的影响,并在高重频条件下进行了放电特性和能量特性分析。最后,利用纹影系统观察了射流流场的发展过程。实验结果表明：高重频条件下输出电压稳定性良好;随着放电电容的增大,放电持续时间延长,放电电流增大,放电能量增加;此外,纹影系统观测表明合成射流速度可达150 m/s。该电源可应用于流动控制领域。

英文摘要：

Plasma synthetic jet（PSJ） is an important tool for high-speed flow control, and a high repetition rate, high energy PSJ can produce a better control effect. Consequently, we develop a high-frequency and high-energy pulsed generator for PSJ actuator. The maximum voltage pulse is 10 k V with a pulse repetition rate of 1 000 Hz and a pulse width of 15 μs, and the generator can withstand a discharge current with an amplitude of 320 A, and the discharge energy is 150 m J. Firstly, the topology of the pulsed generator is designed, and the principle of pulsed generator is also demonstrated. Secondly, the effect of different capacitors on the output voltage is investigated. Moreover, the discharge characteristics and energy features are analyzed in a high-repetition rate mode. Finally, the development of the jet flow field is observed using a schlieren system. Experimental results show that the output voltage behaves stable at high frequency. All the discharge duration, current, and energy increase with the increase of the discharge capacitor. In addition, observation of the schlieren system shows the jet velocity reaches 150 m/s, which indicates this pulsed generator can be used in the field of flow control.