能源模块磁开关工作特性分析  

Working Characteristics Analysis of Magnetic Switch in Energy Module

作　　者：刘毅[1] 林福昌[1] 冯希波[1] 李黎[1] 刘刚[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074

出　　处：《中国电机工程学报》2012年第36期142-148,2,共7页Proceedings of the CSEE

摘　　要：为保证气体开关可靠触发和其他器件的绝缘安全,神光III能源模块的主放电回路采用磁开关来隔离触发电压,能源模块选择铁基纳米晶环形磁芯作为磁开关。为验证磁开关在能源模块中的工作特性,建立了与工况类似的基于电容放电型测试平台,获得高、低铁基纳米晶材料在一定磁化速率、磁感应增量下的平均相对脉冲磁导率和伏秒积,理论推导了磁开关在能源模块中的平均非饱和电感、饱和电感和饱和时间。理论计算和实测结果表明,能源模块中磁开关的平均非饱和电感约为14 H、饱和电感约为0.6 H、饱和时间约为0.70 s,满足工程设计要求。低剩磁铁基纳米晶材料较高剩磁铁基纳米晶材料更适合作为能源模块磁开关的磁芯。To keep the spark gap switch triggered reliably and protect other components in SG-Ⅲ energy module, it requires a magnetic switch to isolate the trigger voltage in main discharge circuit. Fe-based nanocrystalline was chosen as the material of the magnetic switch in energy module. In order to verify the performance of the magnetic switch, a test stand was built to determine the pulse permeability and volt-second product under a certain pulse width and incremental flux density. The measured parameters of unsaturated inductance （14 μH）, saturated inductance （0.6 μH） and saturation time （0.70μs） were in agreement with the calculation ones based on the results from the test stand. The characteristic parameters of the magnetic switch satisfy the engineering requirements of energy module. Fe-based nanocrystalline with low residual flux will be more suitable than that with high residual flux in this situation.

关 键 词：能源模块 气体开关 磁开关 铁基纳米晶 磁化曲线 

分 类 号：TM85[电气工程—高电压与绝缘技术]