电气传动2019，Vol.49Issue(12)：48-51,4.DOI:10.19457/j.1001-2095.dqcd18869
控制延时对变流器电网感抗适应能力的影响分析
Analysis of Control Delay's Effect on the Adaptability of the Converter to the Inductive Grid Impedance
摘要
Abstract
Digital control and pulse-width modulation(PWM)technology are widely used in grid-connected converter control. However,both of them introduce some delay,and the delay has an important influence on the adaptability of the converter to the inductive grid impedance. First,the grid-connected converter's impedance model with the control delay was built,and the influence of the control delay on the grid-connected converter's adaptability to the inductive grid impedance was analyzed using the impedance-based analysis method. The results show that the relationship between the grid-connected converter's adaptability to the inductive grid impedance and control delay are approximately inverse linear. If the control delay reduces to one third of the original,the grid-connected converter's adaptability to the inductive grid impedance will increase to two point nine times than before. Finally,the simulation model was built in PLECS platform,and the simulation results confirm the validity of the analyses.关键词
数字控制/控制延时/并网变流器/弱电网/阻抗分析法Key words
digital control/control delay/grid-connected converter/weak power grid/impedance-based analysis method分类
信息技术与安全科学引用本文复制引用
邹灿,吴星荣..控制延时对变流器电网感抗适应能力的影响分析[J].电气传动,2019,49(12):48-51,4.基金项目
杭州科技职业技术学院校级科研重点课题(HKZYZD-2017-1) （HKZYZD-2017-1）
