改进型补偿脉冲发电机电流成形分析  

Analysis on the Current Formation of an Improved Compensated Pulsed Alternator

作　　者：高梁[1] 李贞晓[1] 栗保明[1] 

机构地区：[1]南京理工大学瞬态物理国家重点实验室,南京210094

出　　处：《高电压技术》2014年第4期1116-1120,共5页High Voltage Engineering

基　　金：国家高技术研究发展计划(863计划)(2013AA8091002A)~~

摘　　要：补偿脉冲发电机集能量存储、机电能量转换、脉冲成形于一体,被认为是电炮武器系统的首选高功率脉冲电源。在传统补偿脉冲发电机结构基础上,以能产生较宽平顶波的选择被动式补偿脉冲发电机为研究对象,通过改变电刷和换向片结构,对比分析了在不同点火角度、电枢与励磁绕组相对位置、不同耦合深度下的电流波形特点。仿真计算表明:补偿角度的变化显著影响脉冲峰值的大小;随电枢绕组初相角增大,脉冲初始阶段的一段负脉冲增强;两绕圈耦合深度越大,波形起伏越大。通过计算及有限元模型仿真分析,证明改进后的结构可使电机内电感下降,同时选择被动式补偿脉冲发电机可以获得更高功率的脉冲电流和较理想的频谱分布。Compensated pulsed alternator is considered as a preferred high pulse power supply which is composed of energy storage, energy conversion, and pulse formation. On the basis of the traditional structure of the selective passive compulsator which can produce a wide and fiat current, by changing the structure of the brush and commutating segment of pulsed alternator, we analyzed the current waveforms of the alternator at different trigger angles, different relative posi- tions of coil windings, and different coupling depths. Simulative calculations indicates that the amplitude of current is significantly influenced by compensating angle, that a part of the negative pulses at the beginning stage are enhanced by increasing initiative phase angle of coil, and that the current fluctuates harder with increasing coupling of two coils. Si- mulation of a finite-element model indicates that the proposed structure can decrease the inductance of the compensated pulsed alternator, and selection of the new structure of passive compensated pulsed alternator can obtain higher pulse power current as well as a better spectrum.

关 键 词：选择被动式 补偿脉冲发电机 电刷 换向片 高功率脉冲电源 有限元 

分 类 号：TM31[电气工程—电机]