王嘉磊,何建平,郭筱瑛,游芳,李清,刘威,曹太强.基于VSG的正弦锁定技术研究[J].电测与仪表,2015,52(16):. WANG Jia-lei,HE Jian-ping,GUO Xiao-ying,YOU Fang,LI Qing,Liu Wei,CAO Tai-qiang.Research on Sinusoid-locked Technology Based on Virtual Synchronous Generator[J].Electrical Measurement & Instrumentation,2015,52(16):.
基于VSG的正弦锁定技术研究
Research on Sinusoid-locked Technology Based on Virtual Synchronous Generator
In order to realize the real-time synchronization of various grid-connected operation equipments in new energySsystem, this paper adopted a effectively sinusoid-locked loop technique which do not need to design the filter and the advantage of less calculation. This paper based on the control concept of virtual synchronous generators which mimicking the operation of synchronous generators, by controlling the power exchange to be zero to get the synchronised signal of input amplitude, frequency and phase signal. Finally through the contrast analysis with enhanced phase-locked loop in the platform of Matlab/Simulink, the sinusoidalSphase-locked loop technologySbecause of the existence ofSvirtualSinertiaShas the characteristics of that outputSsignalSdoes not occur instantaneous mutations, the smallSimpact to circuit,Sand this method does not affect theSdynamicSresponse speed of the system at the same time when the input signalSstepSmutation; the output voltage total harmonicSdistortionSrate from 4.28% under the conditions of the theSenhancedSphase locked loopSreduced to 0.01% which under the conditions of the sinusoid-locked loop technique when the input voltageSsignalScontainsS2nd,S3rd,S5th order harmonic components which the amplitude is 10% of the fundamental wave,Swhich effective verifiedSthe capacity of resisting harmonicSinterference of sinusoid-locked loop technique.
