基于双脉宽调制方式的谐波抑制技术

Research of Harmonic Suppression Technology Based on Dual Pulse-Width Modulation Method

针对谐波的产生会导致一些用电设备,特别是精密仪器出现工作故障、甚至损坏,提出了一种双脉宽调制方式,可以有效地抑制输出电流特定次谐波。分析了双脉宽调制方式的基本原理,给出了控制信号频谱的仿真比较结果,并对仿真与实验的数据分析,验证了该调制方式可以对直流电源的输出电流特定次谐波进行抑制。

The generation of harmonic will generate electric equipments failoperation or damage,especially precision instruments. Dual pulse-width modulation（ DPWM） method was proposed to suppress the specific harmonics of output current effectively. Firstly,we introduced the rationale of DPWM and gave the simulation results of control signal spectrum. Finally, based upon analysis of the simulation and experimental data,this DPWM method was validated to suppress specific harmonics generated by the output current of DC power.