北京科技大学学报Issue(10)：1394-1399,6.DOI:10.13374/j.issn1001-053x.2014.10.017
一类多组交直交变频调速系统对电网谐波影响的分析
Harmonic analyses of power grid in a kind of multi-group AC--DC--AC variable frequency speed-regulating drive system
摘要
Abstract
Based on a synchronous machine in an AC--DC--AC variable frequency speed-regulating drive system, a new power supply method of phase-shifting combination is proposed by a detailed study on the impact of power grid harmonics. With regard to the auxiliary motor drive system of a hot-rolling mill, the grid side harmonic rate and waveform distortion rate are quantitatively analyzed when the parameters of the power load, LC filter, pulse-width modulation circuit and transformer change. Simulation results show that the power supply method with the reasonable parameters3 design of the drive system can drastically reduce the grid side harmonic interference that the total harmonic distortion is suppressed within 4. 0%. This study provides an effective method for the design of a factory drive system and a reactive power compensation system as well as the fault diagnosis of an electric drive system.关键词
变频器/电机拖动/移相/谐波分析Key words
inverters/motor drives/phase shifting/harmonic analysis分类
信息技术与安全科学引用本文复制引用
王继忠,童朝南,李擎..一类多组交直交变频调速系统对电网谐波影响的分析[J].北京科技大学学报,2014,(10):1394-1399,6.基金项目
国家自然科学基金资助项目(No51205018) （No51205018）
