基于载波错相的中压传动系统谐波抑制策略

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中图分类号：P715 文献标志码：A 文章编号：2095-2945（2025）27-0161-07

Abstract：Inordertosuppressthegenerationofalargenumberofharmonicsonthegridsidebythemediumvoltagehighpowergrdconnectedconverterinhotrolingandimprovethequalityofgridconnectedpower，aharmonicsuppresionstrategy forhotrollingbasedoncarierphasemismatchisproposed.Bychangingthecarierphaseoftheparalelconverterunittomake theoutputwavefomclosetosineandshiftingtheharmonicpeakvalue，theharmoniccancelltioneffectisobtained.This strategyisuniversalandsuitableforthree-leveldualmoduleparalelcoordinationtoeliminatespecficharmonicpulsewidth modulationstrategies，andhassignificantfectsinmutipleparaleloperatingconditionssuchasdualwindingmodelsorsingle winding models，the Total Harmonic Distortion（THD）of the current has been decreased from 1.05% to 0.55% .The correctness andefectivenessoftheproposedstrategywereverifiedbybuildingahardware-in-the-lopsimulationmodelofthemedium voltage driver system.

Keywords：mediumvoltage transmission;harmonicsuppresson；carrierphaseeror;neutral pointclamp typethree-level;grid side converter; single and double winding transform

谐波危害对于设备的运行是非常大的，它能降低电能的生产、传输和利用效率，使电气设备过热、产生振动和噪声，干扰信号传输，加速绝缘老化，缩短设备使用寿命，甚至引发故障或烧毁。（剩余9993字）