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Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (2): 24006-024006.doi: 10.1088/2058-6272/aa9b28

• 18届全国等离子体科学和技术会议 • 上一篇    下一篇

Soft switching circuit to improve efficiency of all solid-state Marx modulator for DBDs

  

  • 收稿日期:2017-07-13 出版日期:2018-01-11 发布日期:2017-11-15

Soft switching circuit to improve efficiency of all solid-state Marx modulator for DBDs

Liqing TONG (童立青)1,2, Kefu LIU (刘克富)1,2 and Yonggang WANG (王永刚)1,   

  1. 1 Department of Light Sources & Illuminating Engineering, Fudan University, Shanghai 200433, People’s Republic of China 2 Engineering Research Center of Advanced Lighting Technology Ministry of Education, Fudan University, Shanghai 200433, People’s Republic of China
  • Received:2017-07-13 Online:2018-01-11 Published:2017-11-15
  • Supported by:

    This work is supported by the Engineering Research Center of Advanced Lighting Technology Ministry of Education.

Abstract:

For an all solid-state Marx modulator applied in dielectric barrier discharges (DBDs), hard switching results in a very low efficiency. In this paper, a series resonant soft switching circuit, which series an inductance with DBD capacitor, is proposed to reduce the power loss. The power loss of the all circuit status with hard switching was analyzed, and the maximum power loss occurred during discharging at the rising and falling edges. The power loss of the series resonant soft switching circuit was also presented. A comparative analysis of the two circuits determined that the soft switching circuit greatly reduced power loss. The experimental results also demonstrated that the soft switching circuit improved the power transmission efficiency of an all solid-state Marx modulator for DBDs by up to 3 times.

Key words: dielectric barrier discharges, all solid-state Marx modulator, series resonant, power loss

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