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为发展高功率脉冲电源的工业应用而提高其重复工作频率并实现紧凑一体化,设计了一种基于等离子体断路开关(POS)的功率脉冲电源。该电源采用LCC谐振的有源充电器,以产生初级脉冲的Marx发生器为其负载,另外它还可作为等离子体枪的激励脉冲电源和POS的外加磁场激励电源。充电器的设计能满足上述负载在一定重复频率下的充电工作要求,从POS等离子体的注入到外磁场激励,再到Marx发生器和POS的工作,都通过电源电路及参数设计和时序脉冲触发控制而有序地进行。在介绍了轴向和角向两种外加磁场的同轴POS结构、触发控制同轴等离子体枪结构、脉冲发生主电路及其等效电路模型和触发控制脉冲时序后,仿真实验了设计参数的电路。结果表明该电源可以在紧凑一体化的设计原则之下实现Marx发生器初级脉冲的产生,再通过POS断路进一步压缩输出,从而得到较高的脉冲电压放大倍数。电源设计方法和仿真结果将可用于进一步发展面向新兴工业应用的重复频率功率脉冲电源。
In order to improve the repetition frequency and realize the compact integration for the industrial application of high power pulsed power supply, a power pulse power supply based on Plasma Disconnect Switch (POS) is designed. The power supply is powered by an LCC-resonant active charger to load the primary pulsed Marx generator. In addition, it can be used as an excitation pulse source for the plasma gun and an external magnetic field for the POS. Charger designed to meet the above load in a certain frequency repetitive charging work requirements, from the injection of POS plasma to the excitation of the external magnetic field, and then to the Marx generator and POS work, through the power supply circuit and parameter design and timing pulse trigger Control and orderly manner. After introducing the coaxial POS structure of two kinds of applied magnetic field in axial and angular directions, the structure of the coaxial plasma gun triggered by the trigger, the main circuit of pulse generation and its equivalent circuit model and the timing of triggering control pulse, the experimental design parameters Circuit. The results show that the power supply can realize the primary pulse of Marx generator under the compact and integrated design principle and further compress the output through the POS open circuit to obtain higher pulse voltage magnification. Power supply design methodology and simulation results will be used to further develop repetitive-frequency power pulse power supplies for emerging industrial applications.