无二次滤波环节的单相四象限整流器输入电流控制研究  

Control of Input Current of PWM Rectifier without Secondary Filter Circuit

作　　者：李伟[1] 马志文[1] 蔡华斌[1] 赵震[1] 马驰[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《铁道学报》2014年第5期28-32,共5页Journal of the China Railway Society

基　　金：铁道部科技研究开发计划项目(J2012J12)

摘　　要：对无二次滤波环节四象限整流器的中间直流电压脉动产生机理进行分析,从直流环节电压控制和脉宽调制两方面探讨直流电压脉动对整流器输入电流产生的影响。根据分析,提出谐波抑制的控制方法,以消除由于中间直流电压脉动产生的输入电流低次谐波。利用仿真平台对传统预测电流控制和改进算法进行比较,结果表明,本文算法可有效降低输入电流的低次谐波。最后,通过实验验证了谐波抑制措施的有效性。Regarding the PWM（pulse width modulation） rectifier without the secondary filter circuit,the ripple mechanism of DC-link voltages was analyzed,and its effect on input currents of the rectifier was discussed in respect of DC-link voltage control and PWM.The harmonic control method was presented to eliminate low order harmonics of input currents produced by ripple DC-link voltages.Traditional predictive current control and the improved strategy were compared by simulation.The simulation result shows that low order harmonics of input currents are suppressed evidently,and the experimental result verifies the effectiveness of the harmonic control method.

关 键 词：四象限整流器 二次滤波 电流控制 谐波 

分 类 号：U264.5[机械工程—车辆工程]