中国聚变工程实验堆大功率混合直流开关概念设计
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摘要
中国聚变工程实验堆中的超导线圈失超保护开关要求的额定参数达到了10kV/±100kA,针对该运行参数提出了一种混合式直流开关。承担稳态通流的机械开关采用了三级触头结构,可以降低固态开关的通流时间。双向固态开关的阀串采用二极管桥与IGBT组合的形式,结温分析证明可以提高器件的流通电流限制,并对该基本单元拓扑进行了大电流开断实验,验证了该设计的可行性。
The rated parameters of quench protection switch for China Fusion Engineering Experiment Reactor(CFETR)are up to 10 kV/±100 kA.In this paper,a hybrid DC switch is proposed to meet the requirements.The hybrid switch contains an innovative mechanical bypass switch with three levels contacts for conducting the continuous current,which can reduce the on-state time of solid-state switch.The bi-directional solidstate switch is composed of diode bridge and IGBTs.The analysis of junction temperature proves that the maximum allowable current of IGBTs can be improved.In addition,high current interruption experiments of the basic unit topology were carried out to verify the feasibility of the design.
The rated parameters of quench protection switch for China Fusion Engineering Experiment Reactor(CFETR)are up to 10 kV/±100 kA.In this paper,a hybrid DC switch is proposed to meet the requirements.The hybrid switch contains an innovative mechanical bypass switch with three levels contacts for conducting the continuous current,which can reduce the on-state time of solid-state switch.The bi-directional solidstate switch is composed of diode bridge and IGBTs.The analysis of junction temperature proves that the maximum allowable current of IGBTs can be improved.In addition,high current interruption experiments of the basic unit topology were carried out to verify the feasibility of the design.
引文
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[7]李华,宋执权,汪舒生,等.核聚变装置中直流保护开关的研究进展[J].中国电机工程学报,2016(s1):233-239.(Li Hua,Song Zhiquan,Wang Shusheng,et al.Study on DC protection switch for superconducting coils in magnetic confinement fusion device.Proceedings of the CSEE,2016(s1):233-239)
[8]卢应峣,宋执权,汪舒生,等.用于失超保护的固态开关可行性研究[J].电力电子技术,2018,52(1):73-76.(Lu Yingyao,Song Zhiquan,Wang Shusheng,et al.Feasibility study of solid-state breaker for quench protection.Power Electronics,2018,52(1):73-76)
[2]Hassanpoor A,Hafner J,Jacobson B.Technical assessment of load commutation switch in hybrid HVDC breaker[J].IEEE Trans Power Electronics,2014,30(10):3667-3673.
[3]Lu T,Zhao Z,Ji S,et al.Active clamping circuit with status feedback for series-connected HV-IGBTs[J].IEEE Trans Industry Applications,2014,50(5):3579-3590.
[4]Liu G,Xu F,Xu Z,et al.Assembly HVDC breaker for HVDC grids with modular multilevel converters[J].IEEE Trans Power Electronics,2016,DOI 10.1109/TPEL.2016.2540808.
[5]Gaio E,Maistrello A,Barp M,et al.Full scale prototype of the JT-60SA quench protection circuits[J].Fusion Engineering &Design,2013,88(6/8):563-567.
[6]Gaio E,Maistrello A,Coffetti A,et al.Final design of the quench protection circuits for the JT-60SA superconducting magnets[J].IEEE Trans Plasma Science,2012,40(3):557-563.
[7]李华,宋执权,汪舒生,等.核聚变装置中直流保护开关的研究进展[J].中国电机工程学报,2016(s1):233-239.(Li Hua,Song Zhiquan,Wang Shusheng,et al.Study on DC protection switch for superconducting coils in magnetic confinement fusion device.Proceedings of the CSEE,2016(s1):233-239)
[8]卢应峣,宋执权,汪舒生,等.用于失超保护的固态开关可行性研究[J].电力电子技术,2018,52(1):73-76.(Lu Yingyao,Song Zhiquan,Wang Shusheng,et al.Feasibility study of solid-state breaker for quench protection.Power Electronics,2018,52(1):73-76)