中国电机工程学报2017，Vol.37Issue(11)：3278-3286,9.DOI:10.13334/j.0258-8013.pcsee.160992
入网电压控制型逆变器预同步研究
Research on Pre-synchronizing Control of Voltage-controlled Inverters
摘要
Abstract
Based on voltage-controlled inverters,this paper proposed a method which can achieve synchronization quickly and smoothly.It consists of a synchronous detection unit and synchronous modulation units.The detection circuit does not only sense the difference between inverter output and the grid,but also feedback information to a synchronous adjustment unit and send out a grid-connecting command.According to the characteristics of the inverter,primary modulation and secondary modulation were designed to adjust inverter output voltages.Using the linear relationships,rough adjustment of amplitude and frequency would be done refer to grid information firstly.Then the phase angle error would be reduced to zero by changing the inverter frequency,here the frequency and phase angle synchronizations were unified together.The secondary modulation completes the further optimization at the same time just to decrease transient shock.The simulation and experiment results are presented in the paper.Compared with the traditional control strategy,this proposed method reduced the coefficients dependency issues and improved both the accuracy and adaptability effectively.关键词
电压控制型逆变器/预同步/频率控制/一次调节/二次调节Key words
voltage-controlled inverter/pre-synchronization/frequency control/primary synchronous modulation/secondary synchronous modulation分类
信息技术与安全科学引用本文复制引用
赵晋斌,张帅涛,王金龙,屈克庆,李芬..入网电压控制型逆变器预同步研究[J].中国电机工程学报,2017,37(11):3278-3286,9.基金项目
国家自然科学基金项目(51307105) （51307105）
上海自然科学基金项目(16ZR1413000).Project Supported by National Natural Science Foundation of China (51307105) （16ZR1413000）
Natural Science Foundation of Shanghai (16ZR1413000). （16ZR1413000）
