大功率斩波电源的高频振荡分析
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摘要
大功率斩波等离子弧电源在基于IGBT斩波的超高系统集成频率下会产生较大的电压谐振导致熄弧,解决输出侧直流电压高频振荡提高输出电压特性,是一个技术难题。本文以某等离子弧电源项目为基础进行建模分析,进行仿真和试验验证。表明精确增加多级高频滤波电容即可有效改善高频谐振问题。
High power chopper plasma arc power supply produce large voltage resonance and the plasma arc extinguishing at the integrated frequency of ultra-high system based on IGBT chopper. Solving the high frequency oscillation of the output side DC voltage in a super high frequency system is difficulty. In this paper, a plasma arc power supply project is modeled and analyzed, the simulation and experiments are made,which shows that the problem of high frequency oscillation can be removed off effectively.
High power chopper plasma arc power supply produce large voltage resonance and the plasma arc extinguishing at the integrated frequency of ultra-high system based on IGBT chopper. Solving the high frequency oscillation of the output side DC voltage in a super high frequency system is difficulty. In this paper, a plasma arc power supply project is modeled and analyzed, the simulation and experiments are made,which shows that the problem of high frequency oscillation can be removed off effectively.
引文
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[2]吕永康编著.煤的等离子体转化[M].北京:化学工业出版社,2011.
[3]王兆安著.谐波抑制和无功功率补偿[M].北京:机械工业出版社,2005.
[4]高丁丁著.离子渗氦热处理用大功率脉冲电源的研究与设计[D].西北工业大学硕士学位论文,2003.
[5]Cho G,Sabate J A.Hua G,Lee F C.Zero-voltage and zero-current_switching full bridge PWM converter for high-power applications[J].IEEE Trans power Electron,1996(4):622~628.