Speaker
Prof.
Kefu Liu
(Fudan University)
Description
A solid-state dual Marx generator combined a pulse transformer is proposed in this paper, which can obtain a bipolar pulse and increase the output voltage. While, its input current will many times of the ratio of the pulse transformer, which will increase the difficult of the system thermal stress for its compact footprint. The power loss, power efficiency and thermal stress will be studied for a 40kV, 10kHz and 150A system. Its circuit action will be analyzed under different damping conditions with resonance characteristic build by the pulse transformer and load. And its every stages power loss and power efficiency will be quantitative. The thermal model of the Marx generator is also established to the heat sink design. Studies have shown that it can be applied to DBD load with under-damping and the leak inductance of the pulse transformer can make solid-state dual Marx generator worked at soft switching, which can improve its power efficiency and decrease thermal stress. Some practical measurements with a thermal imaging instrument have conducted for experimental demonstration. Through the above equivalent circuit model theory analysis and the experimental measurement, a feasible method for loss analysis, efficiency analysis and thermal design is proposed in this paper.
[1] L.M. Redondo and J. Fernando Silva, “Repetitive High-Voltage Solid-State Marx Modulator Design for Various Load Conditions,” IEEE Trans. Plasma Sci., vol. 37, no. 8, pp. 1632–1637, Apr. 2009.
[2] T. Sakamoto, H.Akiyama, “Solid-state Duanl Marx Generator with a Short Plusewidth,” IEEE Trans. Plasma Sci., vol. 41, no. 10, pp. 2649–2653, Aug. 2013.
Primary authors
Mr
Jian Qiu
(Fudan University)
Mr
Qianyu Zhou
(Fudan University)
Dr
Yonggang Wang
(Fudan University)
Co-author
Prof.
Kefu Liu
(Fudan University)
