磁控管双能固态调制器研制  

Development of the magnetron double energy solid-state modulator

作　　者：杜辉[1] 周英怀 唐维斌 邓长春[1] 李刚 Du Hui;Zhou Yinghuai;Tang Weibin;Deng Changchun;Li Gang(Sichuan Injet Electric Co.,Ltd.,Deyang 618000,China)

机构地区：[1]四川英杰电气股份有限公司,四川德阳618000

出　　处：《强激光与粒子束》2025年第2期158-163,共6页High Power Laser and Particle Beams

摘　　要：海关安检双能加速器是由磁控管驱动的,在双能运行时,由于磁控管的静态工作阻抗及脉冲电流波形幅值一般相差比较大,造成脉冲电流顶部波形畸变,不能满足海关安检需要。为此采用“双回路并联电路拓扑+并联IGBT固态开关技术+高变比脉冲变压器技术+波形校正技术”研制了用于双能加速器的固态调制器,实现高低能交替输出脉冲。结果显示,在工作电流在70~120 A范围内时,高低能交替工作的磁控管脉冲电流波形都为比较理想的梯形波,其电流波形的平顶相对变化小于5%。Double energy accelerator used in custom security monitoring is powered by the high-power magnetron,the top of pulse current waveform through the magnetron varies greatly in the double energy operation mode of the ordinary solid-state modulator due to nonlinear impedance of the magnetron,thus it is difficult to precisely distinguish contraband from the commodity in the cargo.To make the top of the pulse current waveform through the magnetron used in the double energy accelerator flat in the double energy operation mode,we developed a solid state modulator based on dual-loop parallel circuit topology,parallel IGBT solid state switch,high ratio pulse transformer technology and waveform correction technique for double energy accelerator.When the operating current through the magnetron is in the range of 70~120 A,this solid state modulator can output quasi-trapezoid current waveform in the double energy operation mode,and the relative top fluctuation of the pulse waveforms through the magnetron is less than 5%.

关 键 词：双能 磁控管 固态调制器 波形校正 脉冲电流 

分 类 号：TN787[电子电信—电路与系统]