Through theoretic reckoning and simulating analyzing , several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current . based on it , some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage . two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure 通过理论计算和仿真分析，比较了并联型apf的几种控制策略的优点和缺点，从中选择瞬时无功理论控制策略i _ p - i _ q计算方式为指令电流产生的算法，并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制；比较了并联型apf主电路的两种常见形式，从中选择了三相电压型变流器的主电路形式；算出适合该apf的直流侧电容和出线电感的参数；设计出能有效消除apf产生的高次谐波的高通滤波器。
High voltage shunt capacitor installation is comprised of capacitor cabinets or steel racks capacitor , spe - cial fuses for capacitor overload protection , capacitor discharge device , air - cored reactor which is applied to restrain surge current and high freq . harmonic , zno arrester without gaps for overvolage - limiting and high voltage vacuum switch etc . capacitor cabinet is made of highquality cold - rolling steel plate 高压并联电容器成套装置主要由电容器柜或钢架电容器电容器过负荷保护专用熔断器放电装置抑制涌流限制高次谐波的空芯电抗器和限制过电压的无间隙氧化锌避雷器及高压真空开关等设备组成。
High voltage shunt capacitor installation is comp - rised of capacitor cabinets or steel racks capacitor , special fuses for capacitor overload protection , capaci - tor discharge device , air - cored reactor which is applied to restrain surge current and high frequency harmonic , zno arrester without gaps for overvoltage - limiting and high voltage vacuum switch etc . capacitor cabinet is 高压并联电容器成套装置主要由电容器柜或钢架电容器电容器过负荷保护专用熔断器放电装置专用放电线圈或电压互感器，抑制涌流限制高次谐波的空芯电抗器和限制过电压的无间隙氧化锌避雷器及高压真空开关
Finally , by using split - operator method to solve time - dependent schrodinger equation of two - dimensional atom in intense laser field , we calculate high order harmonic generation and ionization probability of two - dimensional atom in intense laser field and compare our results with those of one - dimensional atom with same binding energy . it i & found that the cutoff position of high order harmonic generation obtained by using these two models are same , but there are great differences in ionization probability ) dinger方程，研究了两维模型原子在强激光场中的高次谐波和电离几率，并与具有相同基态能量的一维模型原子所得的结果进行了比较，结果表明，用这两种模型所得的高次谐波的截止位置相同，但电离几率有很大的差异。
