大功率变流器脉冲电流的计算
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摘要
为了适应核聚变实验的要求,在下一代托卡马克的设计中需要变流器输出瞬时高强度脉冲电流为大型电气设备提供动热稳定等型式试验。提出一种将电源系统阻抗等效到整流变压器二次侧并结合变流器两端电压变化关系的方法,建立了大功率变流器的等效电路模型。在不同电气参数下计算得出了相应的多台变流器并联的总输出电流。以1000kA为目标,给出了符合条件的电气参数计算过程和结果。该结果作为给定参数下的极限条件,使得在大功率变流器脉冲电流设计时有了最低设计阈值,为后续的变流器器件选型和结构设计奠定了基础。
In order to meet the requirements of nuclear fusion experiments,the converter is required in the design of the next generation tokamak to output instantaneous high-intensity pulsed current for providing type test dynamic and thermal stability in large electrical equipment.In this paper,a method of equating the impedance of the power supply system to the secondary side of the transformer and combining the voltage change relationship at both ends of the converter is presented.The total output current of several converters is obtained by calculation in different electrical parameters.The calculating process and results of electrical parameters meeting the requirements are given when the output current is 1 MA.The results are the limit condition under the given parameter,which makes the minimum design threshold in the high-power converter impulse current design,and lays the foundation for the following converter device selection and structure design.
In order to meet the requirements of nuclear fusion experiments,the converter is required in the design of the next generation tokamak to output instantaneous high-intensity pulsed current for providing type test dynamic and thermal stability in large electrical equipment.In this paper,a method of equating the impedance of the power supply system to the secondary side of the transformer and combining the voltage change relationship at both ends of the converter is presented.The total output current of several converters is obtained by calculation in different electrical parameters.The calculating process and results of electrical parameters meeting the requirements are given when the output current is 1 MA.The results are the limit condition under the given parameter,which makes the minimum design threshold in the high-power converter impulse current design,and lays the foundation for the following converter device selection and structure design.
引文
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[9]Wang Peng,Fu Peng,Song Zhiquan,et al.A new structure based on dynamic stability analysis of external bypass for ITER poloidal field converter[J].Journal of Fusion Energy,2015,34(1):116-121.
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[11]伍友成,刘高旻,戴文峰,等.轻小型高电压大电流脉冲电源研制[J].高电压技术,2018,44(9):3016-3021.(Wu Youcheng,Liu Gaomin,Dai Wenfeng,et al.Design of small-size high voltage and large current pulsed power source.High Voltage Engineering,2018,44(9):3016-3021)
[12]Ryoo H J,Jang S R,Jin Y S,et al.Design of high voltage capacitor charger with improved efficiency,power density and reliability[J].IEEE Trans Dielectrics and Electrical Insulation,2013,20(4):1076-1084.
[13]刘芬,胡安,刘德志.考虑了交流侧电阻的三相全控整流电路的计算[J].船电技术,2005,25(1):35-38.(Liu Fen,Hu An,Liu Dezhi.Calculation of three-phase fully-controlled rectifier circuit considering AC-side electric resistance.Marine Electric and Electronic Technology,2005,25(1):35-38)
[2]Yuan Hongwen,Fu Peng,Gao Ge,et al.On the circulating current control of ITER poloidal field converter[J].Journal of Fusion Energy,2014,33(3):269-274.
[3]Fu Peng,Gao Ge,Song Zhiquan,et al.Preliminary design of the poloidal field AC/DC converter system for the ITER coil power supply[J].Fusion Science and Technology,2013,64(4):741-747.
[4]Fu Peng,Liu Zhengzhi,Gao Ge,el al.Power supply system of EAST superconducting tokamak[C]//Proc of ICIEA.2010:457-462.
[5]高格,傅鹏,黄大华,等.±15kA四象限运行变流电源的研制[J].电力电子技术,2005,39(2):72-74.(Gao Ge,Fu Peng,Huang Dahua,et al.Manufacture of rectifier with output current of±15kA.Power Electronics,2005,39(2):72-74)
[6]高格,傅鹏.可控并联十二脉波四象限运行整流电源的研制[J].电工技术学报,2004,19(7):16-20.(Gao Ge,Fu Peng.Manufacture of parallel connection,12-pulse rectifier with 4-quardant running mode.Transactions of China Electrotechnical Society,2004,19(7):16-20)
[7]陈鹏.TOKAMAK极向场变流器的结构设计[D].合肥:中国科学院合肥物质科学研究院,2011:20-32.(Chen Peng.The mechanical design of TOKAMAK poloidal field(PF)AC-DC converters.Hefei:Hefei Institutes of Physical Science,Chinese Academy of Sciences,2011:20-32)
[8]Chen Xiaojun,Fu Peng,Gao Ge,et al.ITER poloidal field converter fault analysis[J].Journal of Fusion Energy,2015,34(2):177-182.
[9]Wang Peng,Fu Peng,Song Zhiquan,et al.A new structure based on dynamic stability analysis of external bypass for ITER poloidal field converter[J].Journal of Fusion Energy,2015,34(1):116-121.
[10]梁勖,赵读亮,林颖,等.基于可控LC串联谐振的高重频高精度脉冲充电电源[J].高电压技术,2018,44(9):3022-3027.(Liang Xu,Zhao Duliang,Lin Ying,et al.High repetition rate and high accuracy capacitor charging pulse power supply based on controllable LC series resonance.High Voltage Engineering,2018,44(9):3022-3027)
[11]伍友成,刘高旻,戴文峰,等.轻小型高电压大电流脉冲电源研制[J].高电压技术,2018,44(9):3016-3021.(Wu Youcheng,Liu Gaomin,Dai Wenfeng,et al.Design of small-size high voltage and large current pulsed power source.High Voltage Engineering,2018,44(9):3016-3021)
[12]Ryoo H J,Jang S R,Jin Y S,et al.Design of high voltage capacitor charger with improved efficiency,power density and reliability[J].IEEE Trans Dielectrics and Electrical Insulation,2013,20(4):1076-1084.
[13]刘芬,胡安,刘德志.考虑了交流侧电阻的三相全控整流电路的计算[J].船电技术,2005,25(1):35-38.(Liu Fen,Hu An,Liu Dezhi.Calculation of three-phase fully-controlled rectifier circuit considering AC-side electric resistance.Marine Electric and Electronic Technology,2005,25(1):35-38)